Developer tools
Browser-based utilities for formatting drafts, validating configs, generating assets, and checking social previews without moving sensitive data around.
Favicon Generator
Generate professional favicons from text, images, or emojis. Create ICO, PNG, SVG, Apple Touch Icons, and PWA manifest files with live preview.
Service Worker Boilerplate Builder
Generate a production-ready service worker with best practices for caching, offline support, and more.
Barcode Generator
Generate barcodes from text with various formats including CODE128, EAN13, UPC, and more.
QR Code Generator
Generate QR codes for URLs, text, email, phone, SMS, and WiFi credentials with instant download.
SnapMyApp – App Store Screenshot Generator
Create perfectly sized iOS and iPad app screenshots for App Store Connect. Generate all required screenshot sizes before you publish your app.
Markdown Editor
Free online markdown editor with live preview, local storage, drag-drop import, and ready-made templates. Includes Gen AI templates for system prompts, prompt engineering, and AI agent specifications for developers, testers, and product managers.
.env File Validator
Validate, convert, and generate .env files with type checking, secret detection, and framework presets.
.env File Compare
Compare two .env files side-by-side, identify differences, and sync variables between development, staging, and production environments.
.env File Converter
Convert .env files to JSON, YAML and JavaScript with drag & drop support.
OpenGraph Preview Tool
Preview how your links appear on Facebook, Twitter/X, LinkedIn, Slack, and WhatsApp. Validate metadata, analyze images, and debug social sharing cards.
JSON Formatter
A simple tool to format and beautify JSON data.
JSON Compare
Compare two JSON objects and highlight the differences.
Tool guides
Focused walk-throughs for common developer, tester, and product tasks.