Free Dev Tools
Free online developer and utility tools — format data, convert files, work with images, audio, video, and more. No signup required.
Browse by category
Ten areas covering code, data, files, media, AI, general utilities, and more.
Code & Developer Tools
14 tools
Format, test, and transform code — regex, Base64, diff, formatters, and API helpers.
Data & Text Processing
14 tools
Convert CSV, JSON, YAML, and XML; analyze text; generate passwords and more.
File Conversion & Handling
19 tools
PDF, Office, ZIP, OCR, and compression — work with documents in the browser.
Image & Graphics Tools
16 tools
Resize, compress, convert formats, colors, watermarks, and creative image utilities.
Web & Social Media Tools
10 tools
QR codes, barcodes, screenshots, HTML utilities, SEO, and page quality checks.
Audio & Video Tools
15 tools
Convert, trim, compress, transcribe, and extract audio from video.
AI-Powered Tools
8 tools
Summarize, translate, caption images, enhance photos, and lightweight AI helpers.
Productivity & Utility
10 tools
Timers, lists, habits, bookmarks, calculators, and daily utilities.
General Purpose Tools
1 tools
Cross-cutting utilities — timestamps, quick conversions, and everyday helpers that do not fit a single domain.
Fun & Creative Tools
9 tools
ASCII art, word clouds, games, quizzes, jokes, and name generators.
Featured tools
Popular utilities you can use today — more categories filling in over time.
Regex Tester
Build and test regular expressions with live matches and explanations.
Base64 Encoder / Decoder
Encode or decode Base64 strings safely in your browser.
JSON Formatter & Validator
Pretty-print, minify, and validate JSON payloads.
Text Diff Tool
Compare two texts or code snippets side by side.
REST API Tester
A fully-featured API client with collections, environments, variable interpolation, auth helpers, and code generation. Like Postman, built into your browser.
Hash Generator (MD5, SHA256)
Compute MD5, SHA-256, and other hashes from text or files.
CSV ↔ JSON Converter
Convert between CSV and JSON with configurable delimiters.
JSON ↔ YAML Converter
Convert JSON to YAML and back with preserved structure.
XML ↔ JSON Converter
Transform XML documents to JSON and vice versa.
Text Case Converter
Switch between upper, lower, title, sentence, and camel case.
Word Count / Text Analyzer
Count words, characters, reading time, and basic stats.
Password Generator
Create strong passwords with length and charset options.
Password Strength Checker
Estimate password strength and get improvement tips.
Unit Converter
Convert length, mass, temperature, and more.
Color Palette Extractor
Extract dominant colors from any image.
RGB ↔ Hex Converter
Convert between RGB and hexadecimal color codes.
Color Contrast Checker
Check WCAG contrast ratios for text and UI.
QR Code Generator
Create QR codes for URLs, text, Wi‑Fi, and more.
Unix Timestamp Converter
Convert Unix epoch timestamps to human-readable dates and back. Live clock, millisecond support, timezone control, and code examples in 25+ languages.