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Utility Essentials

Discover essential Utility tools — all free, run locally, no sign-up required.

• 🧾 AA Split Quick expense splitter for group dining & trips. Supports half-share, paid deductions, floor rounding, and minimal transfer paths
• ⏱️ 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.
• 📦 Archive Extractor Extract ZIP, RAR, 7z, tar.gz archives online. Browse directory tree, preview file info, download individually or in batch. All processed locally.
• 🎵 Audio Editor Online audio editor with waveform visualization, region trimming, volume control, loop playback, WAV/MP3 export, and local auto-save
• 🤝 Bargaining Tool Multilingual haggling helper for markets & flea markets. Big buttons for price negotiation — no typing, no translation needed.
• 🎵 Beat Visualizer Mic-powered music visualizer with particles, spectrum, waveform, polar & 3D sphere effects
• ⬛ Black Screen Turn your screen pure black with one tap and prevent device sleep — ideal for monitoring, saving power, and nighttime use
• 📚 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.
• 🪪 Business Card Designer Online business card designer with multiple templates, sizes, custom layouts, front/back editing, export HD PNG/PDF
• 🧮 Smart Calculator Expression calculator with accounting tape, labels, tax-inclusive/exclusive calculation, and export
• 🤳 Camera Test Test your webcam online with live preview, resolution detection, and screenshot
• 🕯️ Candle A beautiful animated candle with realistic flickering flame. Watch the warm glow of a candle burning in your browser
• 🔗 🌐 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
• 📊 Chart Generator Generate pie, line, bar, radar, funnel, and gauge charts online with copy-to-clipboard support
• ✅ 🌐 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.
• ✅ 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.
• 🎨 Color Converter Convert HEX/RGB/HSL/HSV colors with picker and contrast check
• 🎨 Color Palette Online color mixer, color space converter, harmony palette generator, gradient creator, output HEX/RGB/HSL/CMYK
• 🎨 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
• 🪩 Color Strobe Minimal Disco strobe simulator — fullscreen high-saturation colors flash rapidly to create a party atmosphere
• 📐 Common Sizes Standard dimensions of everyday objects including paper, furniture, electronics, and human body data
• 🔢 Counter Minimalist tap counter — tap anywhere to +1, with step, target, multiple counters, sound, vibration and fullscreen
• ⏰ Deadline Board Add projects with deadlines and track time consumption with color-coded progress bars, overdue alerts, and a fullscreen big-screen mode.
• 🔊 Decibel Meter Measure ambient noise in decibels via your microphone with a live gauge and level readout, processed locally
• 🎲 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.
• 🎨 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.
• 📋 DIY Signboard Free-form digital signboard creator. Add text, images, shapes, drawings, and videos. Drag, resize, rotate elements. One-click fullscreen presentation.
• 📄 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.
• 🎨 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
• 😊 Emoji Search Search emoji by keyword or describe it in natural language with AI, click to copy, browse by category
• 📊 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.
• 🌳 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.
• 📡 🛜File Transfer Open this tool to start free file transfer. Same LAN auto-prefers max speed. P2P, private & secure, supports multi-file drag & drop
• 🔍 File Type Detector Detect real file formats via magic bytes, spot disguised files
• 💡 Fill Light Turn your screen into a virtual fill light with color temperature, brightness, and multiple lighting modes
• 🪞 Funny Mirror Fun distortion mirror + voice changer for kids
• 📣 Handheld Danmaku Turn your phone into a cheer board with scrolling text
• ⏳ Hourglass High-fidelity hourglass countdown with grain-by-grain falling sand; tap or physically flip to restart
• 🫀 Human Anatomy Atlas Interactive 3D human anatomy atlas — rotate and zoom to explore bones, muscles, organs and body systems
• 🖍️ 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.
• 🖼️ 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
• 🔍 Image Compare Compare two images online with slider drag, fade overlay, diff highlight, and side-by-side linked modes
• 💧 Image Watermark Add text or image watermarks, 9-point positioning, drag to adjust, tile mode, export at original resolution
• 🧠 IQ Test Standard IQ test covering pattern recognition, digit memory, vocabulary, logic, and spatial reasoning - scientific cognitive assessment in 25-30 minutes
• 🔆 Screen Always On Minimalist screen keep-awake tool using Wake Lock API with immersive fullscreen mode
• ⌨️ Keyboard Test Test if your keyboard keys work properly with visual layout highlighting and multiple layout support
• ⏳ Life Countdown Visualize your life progress and remaining time, converted into concrete life events
• 🌱 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
• 📝 Lorem Ipsum Generate placeholder text in English or Chinese
• 🎡 Lucky Wheel Customizable spinning wheel with weighted probability, images, and history
• 🔍 Magnifier Use your rear camera as a real-time magnifier with 1x–10x zoom, freeze frame, screenshot, torch, and color filters
• ≡ Markdown Table Visually build Markdown tables with WYSIWYG editing
• 📚 Markdown Tutorial Interactive guided lessons to learn Markdown step by step
• 📳 Massage Vibrator Multiple vibration massage modes with adjustable intensity and duration
• 🧠 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
• 🎵 Metronome Precise online metronome with Web Audio scheduling, 20-300 BPM, Tap Tempo, 4 time signatures, and visual beat indicator
• 🎤 Mic Test Test your microphone online with real-time volume visualization and spectrum analysis
• 🧠 Mind Map Full-screen mind map editor with multi-level nodes, emoji insertion, node coloring, auto-save, PNG/JSON export
• 🎙️ 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
• 🗓️ 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.
• 🔎 Search Everywhere Type a query once and search across 80+ engines (Google, Bing, Perplexity AI, GitHub, YouTube and more). Open one or batch-open several, add custom engines. Runs fully in your browser
• 📦 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.
• ⚙️ My Device Info Comprehensive device inspector: public IP, geolocation, browser details, hardware specs (CPU/RAM/GPU/battery), API support, local IPs, and HTTP headers
• 🔗 My URLs Minimalist personal URL navigator with auto favicon, categories, drag-to-sort, and JSON import/export
• 🪑 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
• 🎹 Online Piano Browser-based online piano with Web Audio synthesis: keyboard/mouse/touch play, 4 sounds, sustain pedal, recording & WAV export
• 📻 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.
• 🪧 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.
• 🔐 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
• 🔒 Password Generator Generate secure random passwords with custom length and character sets
• 📝 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.
• 📎 PDF Merge Merge multiple PDF files into one. Reorder files, set per-file page ranges, and download the result. Free & runs locally.
• 🚶 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.
• 📅 Perpetual Calendar Multi-country calendar with public & traditional holidays, Chinese lunar dates, 24 solar terms, month/year/day views
• 🕰️ Phone Desk Clock Turn your phone into a beautiful desk clock with digital and analog modes
• 🧩 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.
• 📸 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.
• 🗂️ 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.
• 🖼️ Photo Slideshow Fullscreen photo slideshow with custom frames and fade transitions
• 🥧 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
• 🖼️ Placeholder Image Generate placeholder images of any size — solid color fill or upload a custom background image (cover/contain/stretch), with optional text overlay
• 🍅 Pomodoro Timer Beautiful minimalist Pomodoro Timer with 25-min focus + 5-min break cycles, a draggable dial to set any 1–60 min countdown, screen wake lock and sound notifications
• 🏷️ 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.
• 💹 Profit Calculator E-commerce profit calculator for Amazon, eBay, Mercari, Shopify and more. Instantly calculate profit margin, break-even price and suggested selling price
• 🗣️ 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
• ▣ QR Code Tool Generate, decode, and scan QR codes with custom colors and error correction
• 🏧 Quick Cashier Minimalist cash register helper — shows due amount and change in huge text for customers. Supports tax, round-down, and daily sales summary.
• 📦 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
• 💰 Quick Ledger Lightweight bookkeeping — track income and expenses by month, export to CSV
• ✅ Quick Todo Lightweight todo list with priority, due date, and category tags — export/import JSON for cross-device sync, saved locally
• 📝 🌐 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.
• 🎲 Random Generator Batch generate random integers, strings, colors, and more
• 🎲 Random Grouper Randomly split a list of names into groups by count or size with shuffle animation
• 📲 🛜Remote Input Real-time text sync across devices via P2P. Send text from phone to computer, collaborative meeting notes, cross-device clipboard sync
• 📄 Resume Builder Build a polished resume online — multiple templates, live A4 preview, export PNG/PDF or print
• 🛋️ Room Planner 2D room layout planner. Enter room dimensions then drag-and-drop furniture, with rotate/resize, grid snap, door/window markers, multi-layout saves, PNG export and shareable links.
• 🎭 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
• 🗓️ 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
• 🗓️ 🌐 Time Poll Group poll like Japan\
• 🏆 Scoreboard Match scoreboard with symmetric score display and fullscreen mode
• 📸 Screen Capture Browser-based screenshot tool. Full screen, custom area, or tab capture with annotation editing, export PNG/JPG, copy to clipboard
• 🖥️ 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
• 🖥️ 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
• 🖥️ Screen Test Multi-dimensional display test: solid colors, gradients, grayscale, color patterns and grids to detect dead pixels and display issues
• 🎯 🌐 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
• 📝 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
• 📏 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
• 🌊 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
• 🔊 Speaker Test Test your speakers and headphones with various audio tests and channel checks
• ⏱️ Stopwatch Precise online stopwatch with lap and split time recording
• 🌅 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
• 🎛️ 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
• 🔢 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
• 🎙️ Teleprompter Online teleprompter with auto-scroll, speed/font/mirror/fullscreen controls
• 📋 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
• ⏱️ Time Calculator Calculate date intervals, convert time units, and add or subtract dates with instant, click-to-copy results
• 🗓️ 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.
• 🌍 Timezone Converter Convert times between world timezones with UTC offset display
• 👆 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
• ⌨️ 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
• 📏 Unit Converter Convert length, weight, temperature, area, and storage units
• 🪐 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
• 🎬 🛜Video Console Free multi-device video capture and monitoring recorder with LAN-first speed, multi-view layouts, and Canvas composite recording
• 📹 Video Recorder Browser-based camera recording tool. Switch front/rear camera, apply filters, countdown timer, take screenshots, export WebM/MP4
• 🗳️ 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
• 💰 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
• 🗄️ Web Archive Jump directly to Wayback Machine to explore historical snapshots of any website. Supports first snapshot, latest snapshot, and calendar view modes
• 🏷️ 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
• 🍱 What to Eat Randomly pick today\
• 🎧 White Noise Multi-track ambient sound mixer. Blend rain, waves, birds, fire and more to create your perfect focus or sleep soundscape.
• 🖼️ Whiteboard Online whiteboard with infinite canvas, pen, shapes, text, sticky notes, pan & zoom
• 📐 Wireframe Maker Drag ready-made web components to sketch page wireframes, export PNG or copy
• 🃏 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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