Instantly translate JWT Header and Payload data into readable JSON format.
Locally test the validity of token signatures with HMAC or RSA keys.
Translate standard claims like exp, iat, and nbf into human-readable dates.
Your tokens never leak to the internet; all operations happen in our WebAssembly core.
JWT tokens often carry sensitive user data. Instead of pasting them into online tools, analyze and verify signatures safely with DevUsta's completely local tool.
Everything you need to know about the DevUsta Tools platform.
Format, validate, and beautify your raw JSON data instantly with a sleek, premium developer workstation interface.
Format and minify complex SQL queries instantly in your browser.
%100 Private online Base64 converter. Encode and decode files or text locally in your browser using high-speed WebAssembly. Safe, offline, and no data tracking.
Convert client-side terminal cURL commands into clean JavaScript Fetch or Axios requests instantly.
Securely decode and analyze your SSL/TLS certificates (.crt, .pem) entirely offline in your browser.
Test and debug your local development APIs (localhost) completely offline in your browser. Send custom HTTP requests with headers, parameters, and payloads instantly.
Professional video editing and conversion directly in your browser with FFmpeg.wasm.
Safely record your screen, webcam, and microphone entirely inside your browser without server uploads. 100% Private.
Professional browser-based Secure PDF tool. Sign documents, merge files, sanitize metadata, and compress PDF with 100% client-side security. No uploads, total privacy.
Secure and Local SVG Optimization
Compress, resize, and remove metadata from images 100% locally in your browser.
Squoosh-Style Offline Visual Compressor
Secure Diff Checker
Create custom QR codes with logos, colors, and unique shapes. Scan QR codes securely from your camera or images. Everything runs locally in your browser for maximum privacy.
Build, test, and master regular expressions with a comprehensive cheat sheet and real-time match highlighting.
Secure and local scratchpad.
Analyze your domain's DNS records (A, MX, TXT, CNAME) in real-time across Google & Cloudflare. Perform free security health checks for SPF, DMARC, and DNSSEC.
Generate highly secure passwords and measure their strength offline.
Create custom placeholder images for your design mockups and web development instantly without external dependencies.
Create gorgeous multi-layered CSS box shadows, text shadows, linear/radial gradients, and glassmorphism presets completely offline.