About this project

Most online converters ask you to paste data into a page that quietly sends it to a server. That is a poor fit for API tokens, customer exports or internal configuration.

Here each tool is a small program that runs inside your browser. The address of every tool is stable, indexable and translated, so you can bookmark it and share it with colleagues.

Encoders and decoders, JSON, XML, YAML and CSV utilities, hash and checksum calculators, UUID and JWT helpers, text and line tools, date and number converters, network calculators, archive and file inspectors, Markdown and diagram generators.

The platform stands on excellent open-source projects such as CyberChef (as the inspiration for many transformations), uuid, jsonrepair, Papa Parse, SheetJS, zip.js, marked, DOMPurify and Mermaid. See the open-source page for the full list and licenses.

Utilify team maintains Utilify. Send incorrect results, broken examples or accessibility problems to hello@capriapp.app. Include the tool name, expected result and a fictional example; leave private inputs out of your report.

The project includes automated tests with known encoding and hash results, malformed inputs, precision-sensitive JSON and spreadsheet fixtures. Browser checks cover tool output, navigation, language layouts and security-policy errors.

Where possible, the examples shown on tool pages are generated by the actual tool implementation during the site build. Random generators and file workflows have different examples. Passing a syntax or checksum test is not a guarantee that data is correct for your business use.