Developer Tools Directory
Fast, privacy-first web utilities, data converters, security hashers, and mobile app tools. Everything processes 100% locally in your browser. Zero data ever leaves your device.
APK Decompiler→
Decompile Android APK, AAB, and XAPK files in your browser. View Java, Smali, Manifest, and export ZIP.
JSON Beautifier→
Format, validate, minify, sort keys, and explore hierarchical JSON trees client-side.
Diff Checker→
Compare text, code, or JSON side-by-side with intra-line word highlighting and semantic JSON sorting.
SQL Formatter→
Format, uppercase keywords, and minify SQL queries across Postgres, MySQL, BigQuery, and SQLite.
URL Encoder→
Encode, decode URLs, and parse complex query parameters into editable key-value tables.
HTTP Status Codes→
Searchable directory of 1xx, 2xx, 3xx, 4xx, and 5xx HTTP response codes with specs and remedies.
HTML Entities→
Convert special characters, symbols, and emojis to named or numeric HTML entities and back.
CSS Shadow / Gradient→
Design layered smooth box shadows, glassmorphism blur, and modern color gradients with CSS copy.
SVG Optimizer→
Strip metadata, clean precision, minify vector paths, and preview compressed SVGs instantly.
Markdown Editor→
Side-by-side GitHub Flavored Markdown editor with real-time HTML preview and HTML code copy.
User-Agent Parser→
Parse any client User-Agent string to detect browser engine, OS version, device architecture, and bot type.
Hash Generator→
Calculate MD5, SHA-1, SHA-256, SHA-384, and SHA-512 checksums for text and files securely in-browser.
Base64 Encoder→
Encode text, strings, and files to standard or URL-safe Base64 and decode data URIs.
UUID / ULID Generator→
Bulk generate UUID v4 (random), UUID v7 (time-ordered), and lexicographically sortable ULIDs.
Password Generator→
Generate cryptographically secure random passwords, API tokens, and passphrases with entropy analysis.
Bcrypt Generator→
Generate bcrypt password hashes with configurable salt rounds and verify plain text against hashes.
Binary & Hex Converter→
Convert text bidirectionally to Binary (0101...), Hexadecimal (486578...), and Decimal bytes.
CSV ↔ JSON→
Convert CSV or TSV spreadsheets into structured JSON arrays and transform JSON objects back to CSV.
XML ↔ JSON→
Format and validate XML documents, and convert XML tags to clean nested JSON structures.
Base64 to Image→
Paste Data URI Base64 image strings to preview dimensions, inspect image details, and download PNG/JPG.
Unix Timestamp→
Convert Epoch seconds and milliseconds to human-readable ISO 8601, UTC, and local time with a live clock.
Number Base Converter→
Real-time conversion across Decimal, Hexadecimal, Binary, and Octal numbers with 32-bit signed/unsigned bits.
JSON Escaper→
Escape quotes, backslashes, and linebreaks in JSON for embedding directly in code strings or bash commands.
Case Converter→
Transform text between camelCase, snake_case, kebab-case, PascalCase, CONSTANT_CASE, and Title Case.
Duplicate Remover→
Remove duplicate lines from text lists, sort alphabetically or by length, and count unique occurrences.
Word Counter→
Count words, characters (with and without spaces), sentences, paragraphs, and estimated reading time.
Lorem Ipsum Generator→
Generate customized placeholder paragraphs, sentences, words, mock user names, and test addresses.
ASCII Art Generator→
Generate retro ASCII banners and Figlet headline art for code comments, READMEs, and CLI scripts.
App Icon Resizer→
Upload a single 1024x1024 master icon and export all required Android (mipmap) and iOS icon sizes in a ZIP.
Android Permissions→
Analyze Android permissions to evaluate danger ratings (Normal vs Dangerous), protection levels, and user risks.
Deep Link Tester→
Construct and validate mobile deep links (`app://...` or `https://...`) with instant QR code scanning.