CodeUtil
20+ free developer tools that run entirely in your browser
CodeUtil launched on March 13, 2026 with 3 votes, #3,303 of 23,380 launches that month and more than 50% of that year's launches.
What it does
Fast, private developer tools in your browser. JSON formatter, Regex tester, Cron generator, Base64 encoder, JWT decoder, and 17 more. No signup required.
Fast, free, and private. No signup required. All processing happens in your browser. Practical guides and workflows for your daily developer tasks. A practical guide to hashing algorithms for developers — SHA-256, MD5, SHA-1, SHA-512. When to use them, when not to, and how an online hash generator speeds up your workflow. After years of optimizing builds at Šikulovi s.r.o., I have developed a battle-tested approach to minification. Here is my complete guide to build tool integration, source maps, and avoiding common pitfalls. I used to manually write TypeScript interfaces for every API response. After the third time I mistyped a property name, I automated it. Here's why you should too. Ever…from codeutil.dev
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