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Free tools that never see your files

243 free tools, and every one does its work inside your own browser. Your photos, documents, and numbers are never uploaded, which is also why these can stay free and unlimited — there is no server bill to pay. Built by Dynamb Technologies, a software company in Dehradun.

  • Nothing you type leaves this page
  • Works offline once loaded
  • Free forever, no signup

Image tools

All image tools →

Business & invoicing

All business & invoicing →

Calculators

All calculators →

Developer & text

All developer & text →

PDF & documents

All pdf & documents →

Creators & everyday

All creators & everyday →

Video & audio

All video & audio →

Questions people ask

Is anything I open in these tools uploaded to a server?

No. Every tool here runs inside your browser using the File, Canvas and WebAssembly APIs. Your file is read from your device, processed in the tab, and written back — there is no upload step, so we never receive it. You can verify that yourself: load a tool, disconnect from the internet, and it keeps working.

Do I need an account, and is there a limit?

No account, no email, no limit. Because your device does the work, there is no per-user cost for us to recover, so there is nothing to meter and no watermark to remove.

Why are these free?

They cost us almost nothing to run, and they show what we build. Dynamb Technologies makes business software for a living; these tools are the same engineering at a much smaller scale, given away because the alternative — charging for something with no marginal cost — would be silly.

Do the tools work offline, or on a phone?

Both. Once a page has loaded it will keep working without a connection, and every tool is built for touch as well as desktop. Very large files are the one caveat on a phone, since the whole file is held in the tab.

Tell us what's slow.

We'll tell you what we'd build — and what it costs to run.