A growing collection of free browser-based developer tools for JSON, CSV, YAML, Markdown, encoding, hashing, regular expressions, JWT, UUIDs, timestamps, HTML, CSS, JavaScript, SQL, XML, colors, numbers, diff checking, cron expressions, and more.
Developer Tools are online utilities that help developers format, validate, convert, encode, decode, test, and transform common programming and web development data.
Yes. CrazyGamesUp Developer Tools are free to use online without requiring a subscription.
Yes. The tools are designed to work in modern desktop and mobile web browsers.
Yes. JSON Formatter can beautify JSON while JSON Validator can check whether JSON syntax is valid.
Yes. The Base64 Encoder & Decoder and URL Encoder & Decoder tools support both encoding and decoding directly in your browser.
The Hash Generator supports common algorithms such as MD5, SHA-1, SHA-256, SHA-384, and SHA-512.
Yes. JWT Decoder lets you inspect the header and payload of a JSON Web Token. Decoding a JWT does not verify its cryptographic signature.
Yes. CrazyGamesUp provides separate formatting, minification, and beautification tools for HTML, CSS, and JavaScript.
Yes. XML Formatter, XML Validator, and XML Minifier are available for working with XML documents.
Yes. SQL Formatter helps organize SQL queries into a cleaner and more readable structure.
Yes. The Color Tools section includes color conversion tools for HEX, RGB, and HSL values.
Yes. Number Base Converter and the Binary, Decimal, and Hex converters can convert values between common number systems.
Yes. JSON to CSV converts structured JSON data into CSV, while CSV to JSON converts comma-separated data into JSON for development and data workflows.
Yes. You can format and validate YAML, convert JSON to YAML, and convert YAML back to JSON using the YAML tools.
Yes. Markdown Previewer renders Markdown in the browser, while Markdown to HTML and HTML to Markdown provide conversion in both directions.
Diff Checker compares two blocks of text or code so you can identify content that was added, removed, or changed.
Yes. Cron Expression Generator helps create cron syntax for common recurring schedules used by servers, scripts, and scheduled tasks.
No. These are browser-based online tools, so you can use them directly without installing additional software.