Developer Tools
Utilities for developers — format, convert, encode, and debug.
28 tools
API Request Builder
Send real HTTP requests from your browser with collections.
Base64 Encoder/Decoder
Encode and decode Base64 text locally in your browser. Free, fast, and private — no upload.
Color Palette Generator
Generate accessible palettes and export to CSS or Tailwind.
Cron Expression Generator
Build and explain cron schedules with next-run preview.
CSS Minifier
Minify or beautify CSS with size stats.
cURL to Fetch Converter
Convert curl commands to fetch, axios, or node-fetch code.
Diff Checker
Compare text and JSON with Monaco diff view.
HMAC Generator
Compute HMAC-SHA256 signatures in your browser. Sign messages with a secret key — no server upload.
HTML Beautifier
Beautify or minify HTML with live preview.
HTTP Status Codes
Search HTTP status codes with developer explanations.
JSON Formatter
Free online JSON formatter and validator. Beautify, minify, and validate JSON instantly in your browser with line-level errors.
JSON Minifier
Minify and compress JSON to a single line in your browser. Free, fast, and private.
JSON to YAML
Convert JSON to YAML online in your browser. Free, fast, and private — no server upload.
JSON Validator
Validate JSON online with line-level syntax errors. Free, instant, and private — runs entirely in your browser.
JWT Decoder
Decode JWT header and payload in your browser. Fast, free, and private — no token upload.
JWT Generator
Generate signed JWTs with HS256/384/512 in your browser.
Markdown Editor
Premium markdown editor with live preview and export.
MD5 Generator
Compute MD5 checksums in your browser. Legacy file fingerprints — not for security.
Password Generator
Create strong random passwords in your browser. Adjustable length and character sets — fully private.
Random Token Generator
Generate cryptographically random hex tokens in your browser. API keys, secrets, and session IDs.
Regex Generator
Generate regular expressions from common patterns — email, URL, UUID, dates, and more. Copy-ready presets.
Regex Tester
Test regular expressions online with live matches, flags, and capture groups. Free and private in your browser.
SHA-256 Generator
Hash text with SHA-256 in your browser. Cryptographic digests without server upload.
SQL Formatter
Format and beautify SQL with dialect and keyword options.
SQL Minifier
Minify SQL while preserving string literals.
Timestamp Converter
Convert Unix timestamps to human-readable dates and back.
UUID Generator
Generate UUID v4 identifiers instantly in your browser. Free, private, one-click copy.
YAML to JSON
Convert YAML configs to formatted JSON in your browser. Free, private, and instant.