About ToolOcean

ToolOcean is a collection of 118 free utilities across ten categories, developer tools, PDF, image, audio, video, CSV, spreadsheet, compression, archive and format converters. There is no account, no upload step, no watermark, no daily quota and no paid tier.

It is maintained by ToolOcean, which writes and runs all of it.

Most online file tools work by taking your document, sending it to a server, processing it there and sending something back. That design means a stranger's machine holds your contract, your ID scan or your company's spreadsheet, however briefly, and you have only a privacy policy's word about what happens next.

Browsers have been able to do this work locally for years. They can read files, decode images, decompress archives, parse spreadsheets and process audio without asking a server for help. ToolOcean is built on that: the page loads once, and after that every tool runs as JavaScript on your own machine.

The test is simple. Load a tool, disconnect from the internet, and use it. It still works, because the code that does the job is already on your device. A server-backed tool cannot pass that test.

Three tools are exceptions, because their entire function is a network request, DNS Lookup, IP Address Lookup and the HTTP Request Composer. They are named individually in the Privacy Policy rather than hidden behind a blanket claim.

React and TypeScript, bundled with Vite, using established libraries for the heavy work: pdf-lib, PDF.js, and @cantoo/pdf-lib for documents, SheetJS for spreadsheets, JSZip for archives, and the browser's own Canvas and Web Audio APIs for images and sound.

• Every one of the 145 pages is prerendered to static HTML at build time, so the content is present before any JavaScript runs, better for slow connections, and for anything that reads the page without executing scripts.
• Each tool is a separate bundle, loaded only when you open it. Opening one tool does not download the other 117. The shared entry bundle is about 130 kB compressed.
• No analytics or fonts block the page from rendering, and the analytics tag is only fetched once the page is already interactive.

It isn't, currently. There are no ads, no affiliate links, no sponsored placements and nothing for sale. Running costs are low precisely because there is no backend doing the processing. The site is static files on a CDN, and your device does the work.

If that ever changes, this page will say so plainly, and the Privacy Policy will change with it before anything else does.

OCR, in-place text editing, redaction, and high-fidelity PDF to Word are not here. Those need a different kind of program, and the hosted PDF suites do them. A visual signature is here, and it is only a mark drawn on the page. It is not a certified or qualified electronic signature, and the sign tool says so before you download.

Three tools do use the network, and say so on their own pages: DNS Lookup, IP Address Lookup, and HTTP Request Composer. Everything else, including every PDF tool, stays on the device.

The tools are useful but not infallible. Compression re-encodes images, format conversion discards what the target format cannot represent, and a CSV parser has to guess at ambiguous input. Where a tool makes a trade-off like that, its page says so in the FAQ rather than leaving you to discover it.

Keep your originals, and check anything that matters before you rely on it. That advice applies to every tool of this kind, including this one.

Press Cmd+K anywhere on the site to search all 118 tools, or browse the categories from the footer. The most fully documented tool is the JSON Formatter, which covers the awkward cases most formatters skip, large-integer precision loss, duplicate keys, and how key ordering actually behaves.