About RenderHub

RenderHub is a growing collection of free, browser-only developer utilities. It lets you preview, edit, encode, and convert common text formats — HTML, Markdown, JSON, YAML, CSV, XML, TOML, SVG, Mermaid, LaTeX — and includes everyday helpers such as a JWT decoder, Base64/URL encoder, diff viewer, regex tester, QR-code generator, timezone converter, cron parser, and IP/CIDR calculator.

Why another set of online tools?

Most online formatters and converters either ask you to paste sensitive data into a server you don't control, or they bury the actual functionality under signup walls and upsells. RenderHub takes the opposite approach: every page is a static HTML document that loads a self-contained editor, runs all parsing in your browser, and never sends your input anywhere.

How it works

• The site is built with Next.js in static-site-generation mode and deployed as a set of plain HTML, CSS, and JavaScript files on Cloudflare's edge network.
• There is no backend, no database, and no user accounts. There is nothing to log in to and nothing for us to store.
• File handling happens entirely through the browser's File API. When you open a file in any tool, the bytes are read directly into the in-page editor — they are never uploaded to a server.
• When you click Download, the file is generated locally with a Blob and offered to your browser as a save dialog.

What we do not do

• We do not run any analytics that personally identify you.
• We do not collect, store, or transmit the contents of files you open.
• We do not require accounts, logins, or any form of registration.

Funding

RenderHub is free to use. To cover hosting and continued development, the site displays Google AdSense ads in a small number of slots. See the Privacy Policy for details on how advertising cookies are handled.

Questions or feedback?

Bug reports, feature requests, and corrections are very welcome. Reach us through the Contact page.