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Your tokens, endpoint data, and history are kept entirely inside your browser localStorage and IndexedDB. No server uploads, zero latency, total privacy.
Manage and switch between multiple active request instances, methods, and configurations concurrently with ease.
Includes copy-pasteable configuration templates to bypass CORS restrictions in Express, FastAPI, Django, Spring, and Go.
Choose the HTTP action (GET, POST, etc.) and input your localhost or external REST endpoint URL.
Configure Bearer Tokens, Basic Auth, or API Keys in the Authorization tab, and add headers.
Click Send to execute the browser fetch call and render real-time color status and latency.
Export and copy your configured request instantly as a valid terminal cURL snippet.
Test and debug your local development APIs (localhost) completely offline in your browser. Send custom HTTP requests with headers, parameters, and payloads instantly.
Everything you need to know about the DevUsta Tools platform.
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.
Format, validate, and beautify your JSON data with a sleek, user-friendly interface.
Secure and Local JWT Analysis
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
Format and minify complex SQL queries instantly in your browser.
100% Private Base64 converter. Encode and decode strings locally in your browser using WebAssembly. Convert Base64 to image or PDF safely.
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.
Convert client-side terminal cURL commands into clean JavaScript Fetch or Axios requests instantly.
Generate highly secure passwords and measure their strength offline.
Securely decode and analyze your SSL/TLS certificates (.crt, .pem) entirely offline in your browser.
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.
Test and debug your local development APIs (localhost) completely offline in your browser. Send custom HTTP requests with headers, parameters, and payloads instantly.