CodingTool.dev is a free, browser-based collection of over 82 developer tools covering JSON, encoding, hashing, time, and many other categories, all usable without sign-up.
CodingTool.dev is a free online platform offering a suite of 82+ developer tools that run entirely in the browser. It takes user input such as JSON data, text, files, or URLs and produces formatted output, conversions, hashes, or visualizations. The platform works on any modern browser with no installation or account required. It is developed by an independent creator (name not stated on page).
Key Features
- 82+ tools — Tools span JSON formatting, CSV conversion, code beautification, hashing (MD5, SHA256, SHA512), encoding (Base64, URL, HTML), and more.
- 17 workflows — Pre-built workflows for common tasks like AI prompt scanning, task handoff compilation, and cron expression generation.
- No sign-up required — All tools are accessible without any account creation or login.
- Browser-side processing — Operations like file conversion, password generation, and QR code creation happen locally for privacy; no server upload.
- AI tools — Includes AI Prompt PII & Secret Leak Scanner, AI Coding Prompt Generator, and Task Handoff Compiler.
- Developer workflow tools — Offers UUID generation, fake data generation, commit message generation, and Gitignore generation.
- Visual tools — Features like Swagger/OpenAPI viewer, code screenshot generator, and HTML/CSS/JS playground enable testing and preview.
Who is it for?
- Web developers — Use JSON formatter, schema validator, HTML/CSS beautifier, and cross-browser testing tools.
- DevOps engineers — Leverage YAML/JSON converters, cron expression generator, environment diff comparator, and OpenAPI viewer.
- Data analysts — Work with CSV editor, CSV/JSON converter, and fake data generator for mock datasets.
- Security-conscious users — Employ AI prompt scanner, password generator, password strength checker, and local encryption tools like ZIP with password.
What can you do with it?
- Debug API responses — Copy JSON from an API response, paste into the JSON formatter to beautify and validate; then convert to TypeScript interfaces.
- Generate shareable code snippets — Use the code screenshot generator to create styled images of your code for documentation or social media.
- Automate time-based tasks — Build and test cron expressions with timezone-aware simulation before deploying to a server.
- Transfer files without network — Use the animated QR file transfer tool to send small files between devices via QR codes, no pairing needed.
How does it work?
Each tool operates independently on a dedicated URL. Users navigate to the tool of choice, input their data (paste text, upload a file, or enter parameters), and the result is displayed or downloadable immediately. Processing occurs client-side for most tools, meaning no data is sent to a server.
FAQ
- Is CodingTool.dev free? Yes, all 82+ tools are completely free with no sign-up or payment required.
- Can I use the tools offline? No, they require an active internet connection to load the web page, but many operations run client-side.
- What file types are supported for conversion? The platform supports JSON, CSV, YAML, XML, Markdown, HTML, and images (PNG, JPEG, WebP) for conversion and processing.
- Are my uploaded files stored on a server? No, files are processed entirely in your browser. Tools like ZIP with password and P2P file transfer explicitly state no upload to any server.
- Is there a mobile version? The website is responsive and works on mobile browsers, though some tools may be optimized for desktop use.
