Browser-based dev tools
Handle everyday tasks quickly—format JSON, convert CSV, resize images, try HTTP requests, pick colors, clean text, generate hashes and QR codes, and more. Everything stays oriented to real developer workflows.
Explore toolsatdev.blog – Free dev tools, logic games & hands-on programming blog
A place to work and learn tech a little easier every day: fast dev tools in your browser, logic games that sharpen kids' thinking, and hands-on programming articles. Everything is built to stay simple—no sign-up, no install, and we keep sensitive uploads to our servers to a minimum.
- Free
- Runs in your browser
- No sensitive uploads
- Original content
What can you do on atdev.blog?
Logic games for kids
Short, friendly puzzles that sharpen observation, logical thinking, reflexes, and problem-solving—from memory and Sudoku-style challenges to our exclusive Secret Squares levels.
Play logic gamesOriginal tech blog
Hands-on articles on programming, tools, Next.js, day-to-day workflows, and lessons from building and shipping real products.
Read the latest blogWhy Choose atdev.blog?
Built with modern web technologies and developer-first principles
Lightning Fast
All tools run 100% client-side for instant results. Zero server delays, maximum privacy, blazing performance.
Developer Focused
Built by developers, for developers. Clean interfaces, keyboard shortcuts, and tools that actually solve real problems.
Private & Secure
Tools run client-side — your input never leaves your browser. Analytics and Google AdSense only load after you accept cookies. Full details in the Privacy Policy.
Browse by category
Developer tools
Text utilities, hash and QR generators, image helpers, CSV/Markdown converters, API tester, and embedding formatters — all tuned for quick, repeatable tasks.
Kids & logic games
ColorMatch, Word Puzzle, Shape Logic, Memory Match, Sudoku, Tic-Tac-Toe, plus Secret Squares — puzzles that reward attention and reasoning.