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All Tools
212 tools
free, privacy-first online tools. Everything runs in your browser — no upload, no sign-up.
Collab
✨ Fun
Convert
Development
Text
Preview
Media
Utility
Collab
(15)
⏱️
Agenda Timer
Plan the duration of each meeting or event segment and run a big live countdown, with sound and desktop alerts when time is up. Adjust durations on the fly and let others follow the agenda progress read-only via a shared link.
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⚖️
⚖️ Mr.AI Judge
Two people, two stories? Hand the claim and each side\
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🔗
🌐 Chain Relay
Multiplayer relay sign-up tool: start a topic to get a share link, others add short entries via the link with automatic numbering, anyone can edit or delete entries, and all data syncs across devices through the shared system with no login — great for sign-ups, roll calls and tallies
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✅
🌐 Check-in
Create a check-in page and share the link — others tap a big button to check in (sign-in, roll call, habit tracking). Both sides see all records on a calendar; optionally limit one check-in per person per day, with names, stats, CSV export and a manage password. No signup, browser-only, free.
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✅
Check-in Sheet
Electronic check-in sheet: add or import a roster, tap a card to check someone in with a timestamp, track attendance rate live, add notes, then export the result as a spreadsheet, image or text and share it. Data stays local.
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📡
🛜File Transfer
Open this tool to start free file transfer. Same LAN auto-prefers max speed. P2P, private & secure, supports multi-file drag & drop
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📞
🛜LAN Call
Voice/video call tool for LAN, auto-discover online users, tap to call, P2P direct
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🪑
Seating Planner
Visual office seating planner — drag desks, meeting rooms, walls to build floor plans; assign employees with team colors; templates, PNG/PDF/print export, saved locally
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📹
🛜P2P Video
Create a 6-digit room first, then let others join. P2P direct, free and fast, private and secure. Same LAN gets top speed first
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📝
🌐 Quiz Maker
Make and share quizzes online: create single-choice, multiple-choice, true/false, fill-in-the-blank and short-answer questions, then generate one share link. Takers answer and get auto-graded with explanations; results are collected automatically, and a private manage link lets you edit questions and view results anytime. Ask AI for hints. No signup, browser-only, free.
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📲
🛜Remote Input
Real-time text sync across devices via P2P. Send text from phone to computer, collaborative meeting notes, cross-device clipboard sync
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🗓️
🌐 Time Poll
Group poll like Japan\
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🎯
🌐 Shared Tasks
Goal and checklist collaboration tool: create a goal, break it into subtasks, and get a manage link plus a share link. Assignees check off items and add notes while you track progress, deadlines, and feedback in real time on one shared record
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🎬
🛜Video Console
Free multi-device video capture and monitoring recorder with LAN-first speed, multi-view layouts, and Canvas composite recording
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🖼️
Whiteboard
Online whiteboard with infinite canvas, pen, shapes, text, sticky notes, pan & zoom
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✨ Fun
(33)
🎵
Beat Visualizer
Mic-powered music visualizer with particles, spectrum, waveform, polar & 3D sphere effects
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🍺
Beer Simulator
Turn your phone into a glass of beer — tilt to slosh, raise it to your lips to drink
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🕯️
Candle
A beautiful animated candle with realistic flickering flame. Watch the warm glow of a candle burning in your browser
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🪩
Color Strobe
Minimal Disco strobe simulator — fullscreen high-saturation colors flash rapidly to create a party atmosphere
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🎲
Dice Roller
A highly realistic 3D online dice roller: dice tumble, bounce and settle with real rigid-body physics on a wood-grain table, then the face-up pips are read automatically. Click the table or shake your phone to roll, choose 1-5 dice with an auto sum, enjoy synthesized roll sounds and a roll history — perfect for board games, drawing lots and random decisions.
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🎨
Doodle Board
Full-screen doodle board with refined brushes (pencil/crayon/airbrush/calligraphy/neon), shapes, pressure, fill, custom background color, image insert (paste/drag), auto-save, undo/redo, copy or export PNG
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🍳
Emoji Kitchen
Mix two emoji from Google Emoji Kitchen to create fun sticker combinations. Download PNG or copy image for chat and social media creativity
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💡
Fill Light
Turn your screen into a virtual fill light with color temperature, brightness, and multiple lighting modes
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🎆
Fireworks Simulator
A full-screen, physics-based fireworks simulator that bursts wherever you tap: natural launch, explosion, fall and afterglow in one lifecycle. Random real shapes (peony, ring, willow, heart, palm, crackle) and palettes, with auto play, finale barrage and sound toggle — relax and set a festive mood against the night sky
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🪞
Funny Mirror
Fun distortion mirror + voice changer for kids
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📣
Handheld Danmaku
Turn your phone into a cheer board with scrolling text
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⏳
Hourglass
High-fidelity hourglass countdown with grain-by-grain falling sand; tap or physically flip to restart
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🧠
IQ Test
Standard IQ test covering pattern recognition, digit memory, vocabulary, logic, and spatial reasoning - scientific cognitive assessment in 25-30 minutes
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⏳
Life Countdown
Visualize your life progress and remaining time, converted into concrete life events
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🌱
A Human Life
A vertical timeline with emoji art showing key life milestones and bodily changes from conception to old age, locate your current stage and export a long image
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🪄
Light Stick
Turn your phone into a concert light stick — a glowing bar on a pure black fullscreen with steady/breathe/strobe/rainbow modes, glowing brighter as you wave
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🎡
Lucky Wheel
Customizable spinning wheel with weighted probability, images, and history
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📳
Massage Vibrator
Multiple vibration massage modes with adjustable intensity and duration
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🧠
Memory Trainer
Browser-based memory training with four classic games — number memory, card match, Simon sequence and grid recall — three difficulties, sound & vibration feedback, local score history and trend chart
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🎹
Online Piano
Browser-based online piano with Web Audio synthesis: keyboard/mouse/touch play, 4 sounds, sustain pedal, recording & WAV export
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🔐
The Password Game
A playful, educational password challenge: beat a chain of stacking, increasingly absurd and conflicting rules, unlocking them one by one until you win — with real password-security tips along the way and a true strength check at the end. All local; your password is never uploaded
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🥧
The World of Pi
Explore the first 1,000,000 digits of pi: browse every digit, find where your birthday hides, recite pi digit by digit, play the next-digit guessing game and see the 0–9 distribution
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🎲
Random Generator
Batch generate random integers, strings, colors, and more
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🎭
Personality Type Test
Fun personality test based on 15 psychological dimensions, matching 27 unique personality types through scenario questions, results can be shared as beautiful images
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🏆
Scoreboard
Match scoreboard with symmetric score display and fullscreen mode
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🖥️
Screen Saver
Browser-based screen saver simulator with snake animation, text scrolling, floating emojis, geometric patterns, and custom image bouncing. Enter fullscreen with Wake Lock to keep your display on
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🌊
Sky to Seabed
An immersive vertical scroll from the Moon, space and airliners down to the deepest ocean trench — scroll up into space and down into the deep sea, with an altitude ruler, live HUD and cartoon creature facts
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🎛️
Synthesizer
Browser-based online synthesizer with Web Audio API: dual oscillators with 4 wave types, ADSR envelope, LP/HP/BP filter, LFO modulation, piano keyboard, presets, WAV export
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⌨️
Typing Speed Test
Online typing speed test with live WPM/CPM, accuracy, time and character count. English counts by word, Chinese/Japanese by character. Free mode and follow-text mode with per-character highlighting; reach 500 chars to join the global leaderboard
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🪐
Universe Simulator
A physically accurate 3D solar system in your browser: real J2000 Keplerian orbits, true rotation periods and axial tilts, the asteroid belt, Saturn rings with the Cassini division, Earth clouds and atmosphere, adjustable time flow and true-scale mode, plus fun fact cards
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💰
How Rich Will I Be?
Personal wealth forecaster: year-by-year compound simulation of your future net worth with a growth curve, yearly breakdown, wealth milestones and FIRE age. All local, nothing uploaded
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🍱
What to Eat
Randomly pick today\
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🎧
White Noise
Multi-track ambient sound mixer. Blend rain, waves, birds, fire and more to create your perfect focus or sleep soundscape.
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Convert
(35)
📦
Archive Extractor
Extract ZIP, RAR, 7z, tar.gz archives online. Browse directory tree, preview file info, download individually or in batch. All processed locally.
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🎵
Audio Converter
Batch audio converter — add multiple files at once and convert them all to MP3/WAV/FLAC/OGG/AAC in one click. All in the browser, nothing uploaded.
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📚
Book to PDF
Photograph a physical book page by page with your phone camera. Page edges are detected automatically for perspective correction, B&W enhancement and two-page spread splitting, everything is stored in a local bookshelf you can read page by page, and the whole book exports to PDF or an image pack in one click — photos never leave your browser.
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Aa
Case Converter
Convert text between camelCase, snake_case, UPPER, and more
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🎨
Color Converter
Convert HEX/RGB/HSL/HSV colors with picker and contrast check
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⇄
CSV ↔ JSON
Convert between CSV and JSON formats
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📋
CSV to Excel
Convert CSV / TSV text or files to Excel (.xlsx). Supports multiple sheets, header styles, frozen rows, and auto column widths. Runs locally.
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📖
EPUB/TXT Converter
Turn EPUB books into plain text, or pack a TXT novel into an EPUB with auto chapter detection — all in your browser
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📸
Excel to Image
Render every Excel sheet as a high-resolution PNG image. Supports password-protected files, merge into one tall image, or download sheets as a ZIP. 100% in-browser.
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📊
Excel to Markdown
Upload an Excel file, auto-convert to a Markdown table
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📄
Excel to PDF
Export Excel / CSV files as PDF. Supports multi-sheet, custom page size, orientation, and styles. Runs locally.
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📁
Folder Structure Generator
Parse indented or ASCII tree text into a directory tree and output Markdown/Tree/JSON/YAML.
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🏷️
HTML Entity Codec
Encode/decode HTML entities: named, decimal, and hex formats
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🔄
HTML to Markdown
Convert HTML content to clean Markdown format
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🗜️
Image Compress
Online image compression tool powered by picDone, supports JPG/PNG/WebP/GIF with before/after comparison
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🖼️
Image to Base64
Upload an image and get its Base64 encoding, supports reverse decode
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↵
Line Ending Converter
Convert between CRLF, LF, and CR line endings with auto-detection
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📄
Markdown to HTML
Convert Markdown to HTML with live preview
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🔢
Number Base Converter
Convert numbers between binary, octal, decimal, and hexadecimal
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📎
PDF Merge
Merge multiple PDF files into one. Reorder files, set per-file page ranges, and download the result. Free & runs locally.
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🖼️
PDF to Image
Render each PDF page as a high-quality image. Choose PNG/JPG/WebP, DPI, and quality. Download pages individually or as a ZIP. Fully in-browser.
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📄
PDF to Text
Extract text from PDF files with page-by-page view, page range selection, page break markers, and download as .txt
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⏱️
Time Calculator
Calculate date intervals, convert time units, and add or subtract dates with instant, click-to-copy results
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🕐
Timestamp Converter
Convert Unix timestamps to/from readable dates, seconds or milliseconds
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🌍
Timezone Converter
Convert times between world timezones with UTC offset display
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📏
Unit Converter
Convert length, weight, temperature, area, and storage units
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🔗
URL Codec
URL encode and decode using encodeURIComponent
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🎞️
Video Album
Combine photos and clips with BGM and captions into a downloadable MP4 — entirely in your browser, nothing uploaded.
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🗜️
Video Compressor
Browser-based video compressor powered by FFmpeg.wasm. Reduce MP4/MOV/WebM file size with one-click presets. Files never leave your device.
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🎬
Video Converter
Browser-based video format converter powered by FFmpeg.wasm. Convert between MP4, WebM, MKV, MOV, AVI and GIF, extract audio, and tune codec, CRF, resolution and frame rate. Nothing is uploaded.
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🎬
Video to Audio
Extract audio from video files (MP4, WebM, MOV, etc.) as WAV, MP3 or AAC (M4A). Includes waveform preview, region trimming and channel options. Fully browser-based, no upload needed.
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🎞️
Video to GIF
Convert MP4/WebM/MOV/AVI to animated GIF in-browser with FFmpeg WASM. Trim time range, crop frame region, set FPS, width and quality. No upload needed.
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🖼️
Extract Images from Word
Extract all embedded images from a Word .docx file. Download individually or as a ZIP. 100% in-browser.
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📄
Word to Markdown
Upload a .docx file, auto-convert to Markdown format
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⇄
YAML ↔ JSON
Convert between YAML and JSON formats in both directions
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Development
(23)
🔐
Base64 Codec
Encode and decode text to/from Base64, supports Unicode
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⏰
Cron Parser
Parse cron expressions into human-readable descriptions and next run times
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🖌️
CSS Formatter
Format and minify CSS code with configurable indentation
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🌐
Domain Manager
Personal domain expiry dashboard — paste domains in bulk, auto-fetch expiry date and registrar via RDAP, spot what expires soon; data stays local
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🔍
File Type Detector
Detect real file formats via magic bytes, spot disguised files
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🗂️
Folder Compare
Compare two local folders: added, deleted and modified files, line diffs for text — nothing uploaded
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#️⃣
Hash Calculator
Compute MD5/SHA-1/SHA-256/SHA-512 hashes for text or files
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🌐
HTML Online Editor
Live preview HTML code with device size simulation
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🌐
IP/CIDR Calculator
Calculate network address, broadcast, and host range from IP/subnet
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✨
JS/TS Formatter
Beautify JavaScript and TypeScript code using Prettier
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{}
JSON Formatter
Format, compress, and validate JSON
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🔑
JWT Decoder
Decode JWT token header and payload, show expiration time
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✅
Markdown Validator
Check Markdown document for format issues: heading levels, links, etc.
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🌐
HTTP Request
Simulate HTTP requests online with GET/POST/PUT/DELETE and more. Custom headers, params, body, and auth.
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🔒
Password Generator
Generate secure random passwords with custom length and character sets
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▣
QR Code Tool
Generate, decode, and scan QR codes with custom colors and error correction
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.*
Regex Tester
Test regular expressions with real-time match highlighting, plus AI generation from plain language
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🗄️
SQL Formatter
Format and compress SQL across multiple database dialects, plus AI-powered plain-language SQL explanation
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🗄️
Table to SQL
Paste CSV or JSON data and generate INSERT INTO SQL statements
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🔑
Text Cipher
ROT13, Caesar cipher, and AES encryption/decryption tools
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🔤
Unicode Escape
Convert between \\uXXXX escape sequences and original characters
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🪪
UUID Generator
Batch generate UUID v4/v7 in multiple formats with one-click copy
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📄
XML Formatter
Format, compress and validate XML with custom indentation
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Text
(17)
😊
Emoji Search
Search emoji by keyword or describe it in natural language with AI, click to copy, browse by category
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✍️
HTML Rich Editor
WYSIWYG editor with live preview, export to HTML and Markdown
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↕️
Line Sorter
Sort text lines alphabetically, by length, or randomly
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📝
Lorem Ipsum
Generate placeholder text in English or Chinese
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≡
Markdown Table
Visually build Markdown tables with WYSIWYG editing
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📚
Markdown Tutorial
Interactive guided lessons to learn Markdown step by step
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✍️
AI Writer
Multilingual AI writing assistant: polish and improve existing text, or generate high-quality text from a brief, with customizable target language and tone
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📝
Simple Notes
Minimal online notepad with plain text and Markdown dual-mode editing, live preview, line numbers, auto-save to IndexedDB, fullscreen focus mode, font size control, and .txt/.md export
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📖
Simple Reader
Immersive reading experience for plain text, Markdown, and EPUB. Custom fonts, themes, sentence-by-sentence read aloud from any selection with natural voices, and highlighting.
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🎙️
Teleprompter
Online teleprompter with auto-scroll, speed/font/mirror/fullscreen controls
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🧹
Text Cleaner
Strip HTML tags, extra spaces, special characters and more
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🗃️
Text Dedup
Remove duplicate lines from text, with optional sorting
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🔍
Text Diff
Diff text/code with split view, char-level highlights, ignore whitespace/case
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🔄
Text Replace
Powerful find & replace with regex, batch rules, presets, case-insensitive and whole-word matching
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📋
Text Snippets
Lightweight text snippet manager — save, categorize, search, and reuse text fragments instantly. Features multi-tag organization, real-time search, one-click copy, Markdown preview, batch operations, IndexedDB persistence, and JSON import/export for cross-device sync
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🃏
Flashcards
Generate a deck from a plain-language prompt with AI (pick word/meaning languages and content). Paste an English article to auto-extract its words into a deck, plus custom bulk-import with custom fields. Flip 3D cards, study in sequential/random/unmastered modes, track mastery, TTS read-aloud, JSON/CSV import-export. Data stays local.
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📊
Word Counter
Analyze text with multi-dimensional stats: words, chars, paragraphs, reading time
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Preview
(13)
📄
Doc Reader
Online DOCX reader. View Word documents in the browser without installing Microsoft Office. Renders headings, tables, images, and all formatting. Files stay local.
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📊
Excel / CSV Viewer
View Excel (.xlsx/.xls) and CSV files online with spreadsheet-style display, multi-sheet tabs, column headers, row numbers, and keyword search. All processing is done locally in your browser.
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🫀
Human Anatomy Atlas
Interactive 3D human anatomy atlas — rotate and zoom to explore bones, muscles, organs and body systems
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🔭
Image Viewer
Powerful online image viewer supporting JPG, PNG, GIF, WebP, TIFF, PSD, BMP, ICO, SVG and more. Zoom, rotate, flip, and view complete EXIF metadata.
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🗂️
Online Office
Office launcher: create or open sample documents, spreadsheets and presentations in one click
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📝
PDF Editor
Add text, images, shapes, handwritten signatures, highlights, comments and redactions to any PDF, then export a new file. Redacted pages are rasterized so hidden text cannot be copied or searched. Fully in-browser.
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📑
PDF Reader
Browser-based PDF reader with Canvas rendering, zoom, navigation, table of contents, full-text search and reading progress — no upload required
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🎨
SVG Viewer & Editor
Online SVG viewer and editor with live preview, code editing, export to SVG/PNG, background toggle, and zoom controls
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👆
Touch Screen Test
Comprehensive touch screen device testing: multi-touch, single-touch response, swipe trajectory, pressure sensing, and follow-up tracking with real-time visualization
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🔍
Universal Image Viewer
View PSD/TIFF/HEIC/AVIF/RAW and 80+ image formats your browser can\
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🎞
Video Player
Online video player supporting MP4/WebM and more. Playlist, fullscreen, picture-in-picture, subtitle loading, keyboard shortcuts — all local
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🗄️
Internet Museum
Jump directly to Wayback Machine to explore historical snapshots of any website. Supports first snapshot, latest snapshot, and calendar view modes
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📐
Wireframe Maker
Drag ready-made web components to sketch page wireframes, export PNG or copy
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Media
(35)
🎵
Audio Editor
Online audio editor with waveform visualization, region trimming, volume control, loop playback, WAV/MP3 export, and local auto-save
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🧑🎨
🧑🎨 Avatar Generator
Turn a text prompt or a single photo into a custom avatar with AI. Built-in style presets — anime, chibi, 3D Pixar, pixel, cyberpunk, watercolor, Chinese ink and more — plus circle/square/rounded cropping and PNG/JPG/WebP export, with a persistent history gallery.
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🤳
Camera Test
Test your webcam online with live preview, resolution detection, and screenshot
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📊
Chart Generator
Generate pie, line, bar, radar, funnel, and gauge charts online with copy-to-clipboard support
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🎨
Color Scheme Generator
Extract dominant colors from an image or pick a base color, then generate complementary, analogous, triadic and more schemes with swatches, UI preview, contrast check and multi-format export
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🎟️
Coupon Generator
Free online coupon maker for small businesses. Design discount, voucher, cashback and gift coupons with 8 templates, custom colors, QR codes, serial codes and logo upload. Download PNG/SVG or print tiled on A4 as PDF.
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🔊
Decibel Meter
Measure ambient noise in decibels via your microphone with a live gauge and level readout, processed locally
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🎨
DIY Merch Customizer
Customize products online: pick a t-shirt, cap, mug, tote bag or phone case, choose any base color, drop artwork or add text onto the print area, preview it in real-life use, generate an AI photorealistic wear/use photo, and export a hi-res PNG.
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📋
DIY Signboard
Free-form digital signboard creator. Add text, images, shapes, drawings, and videos. Drag, resize, rotate elements. One-click fullscreen presentation.
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🎞️
GIF Maker
Create GIF animations online — import image frames or draw frame by frame with onion skin, timeline reorder, and export as GIF or WebP
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🖍️
Image Annotator
Annotate images online: upload a screenshot or mockup and overlay arrows, rectangles, circles, freehand, lines, text, numbered badges, measurements and mosaic blur. Paste or upload an image as a layer, resize the base image, move, scale, rotate and delete objects with full undo/redo, then export a PNG or copy to clipboard. All in your browser.
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🖼️
Image Card Maker
Turn text into beautiful image cards: add a title, body and signature, pick a template and ratio, see it live, then copy or download a PNG — rendered in your browser, nothing uploaded
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🔍
Image Compare
Compare two images online with slider drag, fade overlay, diff highlight, and side-by-side linked modes
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✂️
Image Crop
Online image cropping tool, supports local files and remote URLs with before/after comparison
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💧
Image Watermark
Add text or image watermarks, 9-point positioning, drag to adjust, tile mode, export at original resolution
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🔍
Magnifier
Use your rear camera as a real-time magnifier with 1x–10x zoom, freeze frame, screenshot, torch, and color filters
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🎵
Metronome
Precise online metronome with Web Audio scheduling, 20-300 BPM, Tap Tempo, 4 time signatures, and visual beat indicator
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🎤
Mic Test
Test your microphone online with real-time volume visualization and spectrum analysis
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🎙️
Mini Recorder
Lightweight online voice recorder with real-time waveform, pause/resume, customizable default mic/noise-suppression settings, rename recordings, auto-save locally, export WAV/MP3 or batch ZIP download
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🗓️
Monthly Schedule
Make a monthly business-hours calendar poster: mark closed days, events and special hours with colors and notes, add a header and background image, present fullscreen on a door screen or export as PNG. All data stays local.
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📻
Online Radio
An immersive 3D globe radio. Drag to spin the Earth, scroll or pinch to zoom in on labelled countries, tap one to tune into that region, and see station names float as bubbles above their countries. Thousands of free live stations worldwide.
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🚶
People Counter
AI-powered real-time people counting via camera. Draw a virtual line, track who enters and exits automatically. Runs entirely in browser—privacy first.
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🧩
Photo Collage
Auto-arrange multiple photos into a beautiful collage. 10+ layout templates, cover-fit (no stretching), adjustable gap/radius/background. Export HD PNG/JPG.
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📸
How Good Is My Photo
Upload one photo and an AI photography mentor scores composition, exposure, color, subject and sharpness, reads your real EXIF settings, and gives three fixes you can apply right now plus settings for next time.
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🖼️
Photo Frame
Realistic wooden photo frame mockup, 100% in-browser. Upload photos into single/double/triple frame layouts, pick a wood tone, wall color or a custom background image, drag frames freely and adjust shadow, then export an HD PNG.
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🗂️
Photo Organizer
Open a local photo folder and sift it by timeline, exact duplicates, near-duplicate bursts, blurry shots and large files, then clean up in one click. Everything is backed up before deletion and never leaves your device.
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🖼️
Photo Slideshow
Fullscreen photo slideshow with custom frames and fade transitions
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🖼️
Placeholder Image
Generate placeholder images of any size — solid color fill or upload a custom background image (cover/contain/stretch), with optional text overlay
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🧽
Remove Background
AI-powered background removal with transparent/white/custom color export
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📸
Screen Capture
Browser-based screenshot tool. Full screen, custom area, or tab capture with annotation editing, export PNG/JPG, copy to clipboard
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🖥️
Screen Recorder
Browser-based screen recording tool. Capture full screen, window or tab with optional microphone audio, pause/resume, preview and export seekable WebM/MP4
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🎞️
Simple Video Editor
Professional online video editor with multi-track timeline, crop any area and export it at an exact size, audio separation & replacement, range trim, fades, and volume control
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🔊
Speaker Test
Test your speakers and headphones with various audio tests and channel checks
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📹
Video Recorder
Browser-based camera recording tool. Switch front/rear camera, apply filters, countdown timer, take screenshots, export WebM/MP4
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🎵
Winamp Player
Classic Winamp 2.x style online audio player with detachable main/EQ/playlist windows, 10-band equalizer, real-time spectrum visualizer, drag-to-sort playlist, and external URL streaming
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Utility
(41)
🧾
AA Split
Quick expense splitter for group dining & trips. Supports half-share, paid deductions, floor rounding, and minimal transfer paths
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🤝
Bargaining Tool
Multilingual haggling helper for markets & flea markets. Big buttons for price negotiation — no typing, no translation needed.
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⬛
Black Screen
Turn your screen pure black with one tap and prevent device sleep — ideal for monitoring, saving power, and nighttime use
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🪪
Business Card Designer
Online business card designer with multiple templates, sizes, custom layouts, front/back editing, export HD PNG/PDF
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🧮
Smart Calculator
Expression calculator with accounting tape, labels, tax-inclusive/exclusive calculation, and export
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🎨
Color Palette
Online color mixer, color space converter, harmony palette generator, gradient creator, output HEX/RGB/HSL/CMYK
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📐
Common Sizes
Standard dimensions of everyday objects including paper, furniture, electronics, and human body data
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🔢
Counter
Minimalist tap counter — tap anywhere to +1, with step, target, multiple counters, sound, vibration and fullscreen
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⏰
Deadline Board
Add projects with deadlines and track time consumption with color-coded progress bars, overdue alerts, and a fullscreen big-screen mode.
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📄
Document Scanner
Capture with your camera or upload a photo of a paper document, receipt, or whiteboard. Auto four-corner perspective correction straightens it, with grayscale/B&W/color-boost filters, rotation and cropping, multi-page management, and one-click export to image or merged PDF — all processed locally in your browser.
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🌳
Family Tree
Browser-based family tree maker: add members with parent and spouse relations and auto-render a generation-layered chart you can zoom and pan. Member photos are auto-compressed, all data is stored locally in IndexedDB, with JSON backup import/export and high-resolution PNG/SVG family chart export in multiple themes.
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🔆
Screen Always On
Minimalist screen keep-awake tool using Wake Lock API with immersive fullscreen mode
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⌨️
Keyboard Test
Test if your keyboard keys work properly with visual layout highlighting and multiple layout support
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🧠
Mind Map
Full-screen mind map editor with multi-level nodes, emoji insertion, node coloring, auto-save, PNG/JSON export
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🔎
Search Everywhere
Type a query once and search across 140+ engines (Google, Bing, ChatGPT, Perplexity, GitHub, YouTube and more, incl. an AI search group). Open one or batch-open several, add custom engines. Runs fully in your browser
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📦
My Belongings
Personal belongings manager: record each item with quantity, location, notes and expiry date. Expiring and expired items are auto-highlighted, with instant search, tag filters, group-by-location view and photos. Data is stored locally in IndexedDB, never uploaded, with JSON backup import/export.
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⚙️
My Device Info
Comprehensive device inspector: public IP, geolocation, browser details, hardware specs (CPU/RAM/GPU/battery), API support, local IPs, and HTTP headers
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🔗
My URLs
Minimalist personal URL navigator with auto favicon, categories, drag-to-sort, and shareable link lists friends can import in one tap
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🪧
Open Sign Board
Turn any tablet, old phone or screen into a shop open/closed sign. Big centered status text with 10 styles (neon, enamel, noren, LED, etc.), fullscreen display, double-tap to exit, custom text, colors and fonts.
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📅
Perpetual Calendar
Multi-country calendar with public & traditional holidays, Chinese lunar dates, 24 solar terms, month/year/day views
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🕰️
Phone Desk Clock
Turn your phone into a beautiful desk clock with digital and analog modes
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🍅
Pomodoro Timer
Beautiful minimalist Pomodoro Timer with 25-min focus + 5-min break cycles, a draggable dial (wind extra laps for long sessions up to 8 h), lock-screen alert, screen wake lock and sound notifications
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🏷️
Price Tag Generator
Online price tag designer for retail stores. Multiple sizes (thermal paper, A6, A4) and styles (minimal, Japanese POP, chalkboard, sale). Add barcodes or QR codes and export to PDF or PNG.
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💹
Profit Calculator
E-commerce profit calculator for Amazon, eBay, Mercari, Shopify and more. Instantly calculate profit margin, break-even price and suggested selling price
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🗣️
Pronunciation Check
Read a preset or custom English passage, get local speech recognition and a 4-dimension score (accuracy, fluency, pace, stability), plus AI-powered improvement tips
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🏧
Quick Cashier
Minimalist cash register helper — shows due amount and change in huge text for customers. Supports tax, round-down, and daily sales summary.
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📦
Quick Inventory
Stock-count tool for shops — enter stock vs. counted quantities, auto-calculate discrepancies, add a price column and custom columns with configurable visibility, import/export Excel, auto-save, shareable results
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💰
Quick Ledger
Lightweight bookkeeping — track income and expenses by month, export to CSV
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✅
Quick Todo
Lightweight todo list with priority, due date, and category tags — export/import JSON for cross-device sync, saved locally
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🎲
Random Grouper
Randomly split a list of names into groups by count or size with shuffle animation
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📄
Resume Builder
Build a polished resume online — multiple templates, live A4 preview, export PNG/PDF or print
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🛋️
Room Planner
2D floor plan & room planner: draw walls and rooms with auto area, doors/windows that snap to any wall, 70+ furniture and appliances, floor plan templates, multi-layout saves, PNG export and shareable links.
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🗓️
Schedule Planner
Monthly calendar planner — click any date to add timed events with title, notes and color labels; switch to list view and export as Excel, .ics calendar file, image, Markdown or plain text
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🖥️
Screen Test
Multi-dimensional display test: solid colors, gradients, grayscale, color patterns and grids to detect dead pixels and display issues
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📏
Size Converter
Aspect ratio and dimension calculator: lock the ratio and one side follows, resize to a target box, contain/cover fit math, and px/cm/mm/in/pt with DPI conversion — all instant in your browser
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⏱️
Stopwatch
Precise online stopwatch with lap and split time recording
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🌅
Sunrise & Sunset Times
Check sunrise, sunset, moonrise, moonset times and daylight trends for any location. Quickly pick from 80+ world cities, GPS locate, or enter coordinates manually. Shows moon phase and illumination, works offline
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🔢
Tally Counter
Online counting tool — group items, adjustable step, long-press continuous count, multi-plan management, drag-to-sort, undo/redo, perfect for inventory, attendance, and headcount
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🗓️
Timesheet
Online timesheet & attendance tracker: pick from clock-in/out, work-hours, project-time or attendance-status templates, fill by day and auto-total work hours, days present and overtime (overnight shifts supported), export to Excel/CSV/text or share a link. All data stays local.
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🗳️
Vote Counter
Simple online vote tally — tap a candidate card to add +1, with live counts, percentages, ranking, an elected-results board, undo, sound and presentation mode
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🏷️
Batch File Rename
Rename local files in bulk right in your browser — stack find/replace, numbering, regex, case and more rules, preview live, then download individually or as a ZIP. Files never leave your device
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