Developer Utilities Studio
11 fast, client-side, 100% private developer tools & live Web Studio.
Live Code Playground Studio
Write HTML, CSS, and JavaScript in real time with instant iframe rendering and console runner.
Launch Playground →JWT Debugger & Inspector
Decode JWT tokens instantly into Header, Payload, Claims, and Signature validation in real time.
Open JWT Studio →Image to Base64 & Data URI
Convert PNG, JPG, WebP images to Base64 Data URIs with live image preview & HTML/CSS snippets.
Open Image Studio →Password & API Key Generator
Generate high-entropy cryptographic passwords, secret keys, and API tokens with entropy meter.
Open Key Generator →Regex Tester & Matcher
Test Regular Expressions in real time with regex flags (g, i, m, s) and match group highlights.
Open Regex Tester →Base64 Encoder & Decoder
Encode strings into Base64 format or decode Base64 strings back to UTF-8 in real time.
Open Base64 Tool →URL Encoder & Decoder
Safely encode URLs and query parameters for HTTP API requests or decode percent-encoded strings.
Open URL Tool →String Compare & Diff Tool
Compare two text blocks side-by-side or line-by-line to highlight additions, deletions, and line edits.
Open String Diff →Cryptographic Hash Generator
Calculate instant SHA-256 and SHA-1 hashes directly in your browser using the native Web Crypto API.
Open Hash Generator →JSON Formatter & Validator
Prettify raw JSON with custom indentation or minify JSON while validating syntax for API payloads.
Open JSON Studio →Code Minifier & Cleaner
Minify JavaScript, CSS, and HTML code to optimize bundle sizes and speed up web app page loads.
Open Code Minifier →