Developer Tools
31 tools·privacy-first·runs locally
All tools
Icon Kit
Generate a complete Web, iOS, Android, and PWA icon kit from one source image.
Coordinate Studio
Build routes, drag markers, and export clean GeoJSON in one place.
Policy Generator
Draft privacy policies, terms of service, and cookie notices that satisfy regulators.
Data Faker
Spin up believable datasets, IDs, and personas for staging environments in any locale.
JSON Studio
Advanced JSON workspace — edit, query, convert, validate, diff and inspect, all in the browser.
Log Analyzer
Paste noisy logs, spotlight the signal, filter by level, and export clean diagnostics.
SQL Studio
Model tables, constraints, and ready-to-run SQL without leaving the browser.
Password Generator
Deliver enterprise-strong passwords with granular rules and instant strength feedback.
QR Studio
Create branded QR codes with content presets, custom styles, colors, and logo overlays.
Regex Playground
Build and test regular expressions with live matches, capture groups, and curated presets.
Timestamp Converter
Jump between epochs, locales, and readable dates instantly.
File Converter
Convert images and PDFs in your browser — PNG, JPG, WebP, PDF and ICO, any direction. Nothing is uploaded.
UUID Studio
Generate UUIDs in bulk with formatting controls, batch export, and quick history actions.
Focus Canvas
A calm focus timer with an embedded notebook for jotting thoughts mid-session.
Encoder / Decoder
Encode and decode Base64, URL, HTML, Hex, Binary, and 10+ formats in a single click.
HTTP Reference
The definitive reference for every HTTP status code, with examples, best practices, and instant search.
Markdown Editor
Write and preview Markdown in real time with a toolbar, keyboard shortcuts, and one-click export.
CSV Studio
Edit, sort, filter, and export CSV data — all inside the browser with zero uploads.
Cron Builder
Visual cron builder with human-readable preview, next 10 execution dates, and common presets.
Color Lab
Convert between HEX, RGB, and HSL with live preview, harmony palettes, and shades.
Diff Checker
Compare two texts side by side and see every addition, removal, and change highlighted.
JWT Inspector
Decode and inspect JSON Web Tokens — headers, claims, expiration, and signature at a glance.
Hash Generator
Generate SHA-1, SHA-256, SHA-384, SHA-512, and HMAC hashes from text or files.
Image Optimizer
Compress, resize, and convert images between JPEG, PNG, and WebP entirely client-side.
Placeholder Generator
Generate custom placeholder images with any dimension, color, and text for mockups.
Rubber Duck
Explain your bug to the duck. The duck listens. The duck judges. The duck quacks.
Email Designer
Craft beautiful transactional emails — welcome, password reset, OTP — with live preview and one-click HTML export.
Document Scanner
Snap both sides of an ID card, crop and straighten with 4-corner perspective, then export a clean PDF or combined image — all in the browser.
Keypair Generator
Generate RSA, EC, or Ed25519 signing keypairs in your browser — PEM private/public keys, a JWKS bundle, and env-var-ready output. Nothing ever leaves your tab.
Device Tester
Test your hardware in the browser — keyboard keys, a tone generator, a metronome, and a webcam/mic check. Everything runs locally, nothing is recorded.
Env Studio
Parse, lint, compare, mask, and export .env files — spot duplicates, missing keys, and secrets, then ship a clean .env.example.