Your complete
developer toolbox
A powerful collection of developer tools and generators running entirely in your browser. Lightning-fast, privacy-focused, and always free.
Featured Tools
View allQR Code Generator
PopularCreate stunning, customizable QR codes with logos, colors, and shapes
Keyboard Monitor
DeveloperVisualize key presses in real-time for debugging and tutorials
Teleprompter
NewVoice-activated teleprompter with mirror mode and custom fonts
Color Palette
DesignGenerate harmonious color palettes with Tailwind CSS export
QR Code Generator
Create stunning, customizable QR codes for URLs, WiFi networks, contact cards, and more. Add your logo, customize colors and shapes, then download as high-quality SVG or PNG.
- 7+ QR code types: URL, WiFi, vCard, Email, SMS, Phone, Text
- Custom colors, shapes, and embedded logo support
- Export as SVG or PNG in any size up to 1024px
Developer Tools
Transform, validate, and analyze your data instantly
JSON Validator & Formatter
Validate, format, and beautify your JSON data with ease.
JWT Decoder
Decode and inspect JSON Web Tokens to check their payload and signature.
Base64 Encoder / Decoder
Quickly encode strings to Base64 or decode them back to their original form.
URL Encoder / Decoder
Encode and decode URLs with multiple encoding methods. Parse URL components and query parameters.
Timestamp Converter
Convert timestamps, dates, and time units. Calculate epoch dates for day, month, or year.
Timer & Stopwatch
Accurate countdown timer and stopwatch with persistent state and sound alerts.
Text Counter & Analyzer
Count characters, words, lines, paragraphs, and sentences. Get reading and speaking time estimates.
Keyboard Event Monitor
Monitor and test keyboard events in real-time. See key codes, locations, and event properties.
CSS Unit Converter
Convert between CSS units: rem, em, px, %, vw, vh, pt, and more. Bidirectional with customizable base sizes.
List Randomizer
Shuffle and randomize any list. Import from CSV, Excel, or add items manually. Save and reload versions.
Teleprompter
Privacy-first teleprompter with voice control, mirror mode, markdown support, and custom fonts. Perfect for video creators.
JSON SQL Analyzer
Query massive JSON, CSV, and Parquet files locally with SQL. Supports 500MB+ datasets, nested objects, and zero-upload privacy.
Generators
Create secure passwords, unique IDs, and beautiful color palettes
QR Code Generator
Create customizable QR codes for URLs, WiFi, contacts, and more. Supports custom colors, shapes, logo embedding, and multiple export formats.
Stack Swag
Create beautiful tech stack badges for your GitHub README, portfolio, or documentation. Select from 2600+ tech icons, customize layout, and export as SVG or Markdown.
Password Generator
Generate secure passwords with customizable options including length, character types, and strength indicators.
UUID / GUID Generator
Generate universally unique identifiers (UUIDs). Support for v1 (timestamp) and v4 (random) with bulk generation.
Color Palette Generator
Generate complete color palettes from a base color. Creates 9 shades like Tailwind CSS with HEX, RGB, and HSL output.
Crontab Generator
Create and understand cron schedule expressions. Interactive builder with human-readable descriptions and quick presets.
Barcode Generator
Generate popular barcode formats including CODE128, EAN, UPC, CODE39, ITF, and CODABAR. Supports bulk generation and SVG/PNG export.
JSON → TypeScript Generator
Convert any JSON object into TypeScript interfaces and Zod validation schemas instantly. Supports nested objects, arrays, null handling, and custom root names.
White Noise Generator
Play white, pink, or brown noise for focus, sleep, baby soothing, tinnitus masking, or blocking background distractions. Includes mono or stereo playback, stereo width, fullscreen black screen, and privacy-first in-browser audio.
Why developers love us
Built by developers, for developers. Every tool is designed with simplicity and privacy in mind.
Lightning Fast
Built with performance in mind. No server round-trips, instant results. Everything runs in your browser.
100% Private
Your data never leaves your browser. Zero tracking, zero logging. We don't even have analytics.
Always Free
No subscriptions, no paywalls, no hidden fees. All features are available to everyone, forever.
Ready to boost your productivity?
Join thousands of developers who use our tools daily. No sign-up required, just start building.