ZumaTools

No upload endpoint — files never leave your device

Free online tools that respect your files

348 tools for images, PDFs, text, numbers and code. Everything runs directly in your browser — no uploads, no accounts, no watermarks.

  • Nothing is uploaded
  • Instant — no queue
  • Free, no sign-up

Popular

Image converters8

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Image editing31

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Calculators51

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Generators12

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Time & date8

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Category guides

The list above is every tool. These pages are the other half — what the formats and limits actually mean, and which tool to reach for when.

By country

Tools that depend on local rates and rules.

Why these tools have no upload button

Almost every free tool on the web takes your file, sends it to a server, does the work there and sends it back. That was the only way to build one for a long time. It is not any more — the browser that decodes an image to show it on screen can just as well re-encode it, and the same holds for PDFs, text and arithmetic.

So this site has no upload endpoint to send anything to. It is a static export; image work runs on a canvas, PDFs go through pdf-lib and pdf.js, HEIC decoding is a WebAssembly build of libheif, and even the pdf.js worker is self-hosted rather than pulled from a CDN. Load a page, turn off your connection, and the tools keep working.

That is the whole difference, and it is the reason there are no file size limits or daily quotas either — nothing you do costs anyone server time. More about how the site is built and funded.