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CodeUtil.dev is a collection of 20+ browser-based developer tools. JSON formatter & validator, regex tester, cron expression generator, Base64 encoder/decoder, JWT debugger, URL parser, hash generator, and more. Everything runs client-side โ no data leaves your browser. No sign-up needed, just open and use.
CodeUtil.dev
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CodeUtil.dev runs entirely in the browser โ all processing happens on your device, so your data never touches a server. It bundles 20+ tools (JSON, regex, Base64, JWT, cron, hashing, and more) under one roof with zero sign-up. Just open the page and start working.
Based on our record, Prettier seems to be more popular. It has been mentiond 303 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
137Foundry provides legacy modernization services that include dependency mapping as a foundational assessment phase. Prettier and ESLint are useful companion tools for enforcing code style consistency as the refactoring proceeds. Node.js and Python.org official documentation are authoritative references for understanding the import and module systems of those runtimes. - Source: dev.to / about 2 months ago
Prettier and ESLint are useful tools for establishing consistent code style as a baseline before starting structural refactoring - style differences in a diff make behavioral changes harder to spot. OWASP provides useful checklists for security-critical code review that apply directly to the critical path review step. - Source: dev.to / about 2 months ago
The matcher field takes a regex pattern. Edit|Write means this hook only fires when the Edit or Write tool is used. Claude running Bash, Read, or any other tool won't trigger it. The command itself uses jq to extract the file path from the tool input JSON, then pipes it to Prettier. Every file Claude touches gets formatted automatically. - Source: dev.to / 3 months ago
The better approach: let the agent write code however it wants, then run Prettier, Black, Ruff, or ESLint. Zero ambiguity. The agent doesn't need to think about formatting at all, which means fewer tokens spent and fewer decisions that could go wrong. - Source: dev.to / 4 months ago
In the JavaScript ecosystem, ESLint and Prettier are the dominant tools for these roles respectively, and both saw significant releases in early 2026. ESLint's v10 completed a multi-year architectural overhaul, added multithreading for large codebases, and expanded beyond JavaScript to cover CSS, HTML, JSON, and Markdown. Prettier's v3.8 introduced a Rust-powered CLI with meaningful speed improvements. Together... - Source: dev.to / 4 months ago
CodifyFormatter.org - Free Online Tools like Beautify Code, Minifiy Code, Code Converter, Code Formatter, Viewer, Editor for Developer: JSON, XML, HTML, CSS, JavaScript, Java, SQL, CSV and Excel and String Tools
ESLint - The fully pluggable JavaScript code quality tool
DevToys - A collection of converters, formaters, encoders, generators and other tools for your Windows desktop.
Tailwind CSS - A utility-first CSS framework for rapidly building custom user interfaces.
DuskTools.app - 150+ free browser-based developer tools - no sign-up, no tracking, no backend. JSON formatter, Base64 encoder, regex tester, JWT decoder, UUID generator, HTTP status lookup, MIME types, port reference, cron builder & more. Everything runs locally in
VS Code - Build and debug modern web and cloud applications, by Microsoft