Practical engineering writing and free developer tools.
CodeSmith pairs hands-on technical articles with fast, browser-based utilities for markdown, env files, social previews, and everyday developer chores.
Popular tools
Fast browser utilities that run on your machine.
Markdown Editor
Free online markdown editor with live preview, local storage, private Markdown and Word DOCX import, and ready-made templates for developers, testers, and product managers.
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.
.env File Validator
Validate, convert, and generate .env files with type checking, secret detection, and framework presets.
QR Code Generator
Generate QR codes for URLs, text, email, phone, SMS, and WiFi credentials with instant download.
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.
Latest articles
Practical notes, tutorials, and engineering write-ups.
10 opensource iOS libraries for Android-like UI
Collection of open source iOS libraries that help you create Android Material Design-like UI components and interactions in your iOS apps.
Sencha touch blank pages on chrome and android
Getting blank screens when you run your Sencha Touch app? Don't worry, it's probably an issue with the latest version of Chrome (v43) instead of your code.
Control PC from Android app using Java
Learn how to create a simple Android app that can control your PC remotely using Java AWT Robot class and socket programming.
Swift guide for the C# developer
Microsoft released a Swift and C# quick reference guide to help Swift programmers move to C# because of the similarities between both languages.
POST data to Google Docs sheet via app
Learn how to create a contact us page in your mobile app that stores data directly in a Google Sheets document without needing a backend server.
Top 10 Javascript videos
Whether you like it or not, this age is of Javascript. We have curated a list of top 10 videos to help everyone from beginners to non-experts, learn JS.
Tool guides
Focused walk-throughs for common tasks.