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🔐
Base64 Codec
Encode and decode text to/from Base64, supports Unicode
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Aa
Case Converter
Convert text between camelCase, snake_case, UPPER, and more
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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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⏰
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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⇄
CSV ↔ JSON
Convert between CSV and JSON formats
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🔍
File Type Detector
Detect real file formats via magic bytes, spot disguised files
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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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#️⃣
Hash Calculator
Compute MD5/SHA-1/SHA-256/SHA-512 hashes for text or files
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🏷️
HTML Entity Codec
Encode/decode HTML entities: named, decimal, and hex formats
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🌐
HTML Online Editor
Live preview HTML code with device size simulation
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✍️
HTML Rich Editor
WYSIWYG editor with live preview, export to HTML and Markdown
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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 to Base64
Upload an image and get its Base64 encoding, supports reverse decode
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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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↵
Line Ending Converter
Convert between CRLF, LF, and CR line endings with auto-detection
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≡
Markdown Table
Visually build Markdown tables with WYSIWYG editing
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📄
Markdown to HTML
Convert Markdown to HTML with live preview
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📚
Markdown Tutorial
Interactive guided lessons to learn Markdown step by step
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✅
Markdown Validator
Check Markdown document for format issues: heading levels, links, etc.
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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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🌐
HTTP Request
Simulate HTTP requests online with GET/POST/PUT/DELETE and more. Custom headers, params, body, and auth.
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🔎
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
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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 JSON import/export
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🔢
Number Base Converter
Convert numbers between binary, octal, decimal, and hexadecimal
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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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🔒
Password Generator
Generate secure random passwords with custom length and character sets
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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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.*
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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🎨
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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🗄️
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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🧹
Text Cleaner
Strip HTML tags, extra spaces, special characters and more
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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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🕐
Timestamp Converter
Convert Unix timestamps to/from readable dates, seconds or milliseconds
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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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🔤
Unicode Escape
Convert between \\uXXXX escape sequences and original characters
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🔗
URL Codec
URL encode and decode using encodeURIComponent
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🪪
UUID Generator
Batch generate UUID v4/v7 in multiple formats with one-click copy
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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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🗄️
Web Archive
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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🎧
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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📐
Wireframe Maker
Drag ready-made web components to sketch page wireframes, export PNG or copy
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📄
XML Formatter
Format, compress and validate XML with custom indentation
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⇄
YAML ↔ JSON
Convert between YAML and JSON formats in both directions
View all tools →
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