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The WorkbenchTools that upload nothing
A workshop by the ODERSA associationNothing leaves, nothing is kept, nothing reaches us.

The workshop · The PDF corner

The PDF corner

Number a PDF's pages, add a watermark

Positions are systematic, never picked with the mouse: that is what makes it possible without displaying the page, and so without carrying a rendering engine. The tool shows you BEFORE the act what will be written on each page, and it names the pages whose display angle is going to tip everything sideways.

.pdf80 MB

Your file never leaves your device

This tool works entirely inside your browser. Not one byte of your file is sent anywhere, and nothing is kept once the tab is closed.

Checkable in ten seconds, without taking our word for it:

  1. Open your browser's inspector: the F12 key (or Ctrl+Shift+I, or Cmd+Option+I on a Mac).
  2. Go to the “Network” tab, then clear the list.
  3. Process a file on this page. The list stays empty: no request goes out.
  4. To go further: cut your connection and do it again. The tool still works.

This absence of requests is also checked BY MACHINE before every release: a lock drives a real browser, processes a real file, and refuses to publish if a single byte goes out.

The proof page, step by step and in pictures

Going further

InstructionsHow it works

PDFs only. The text is written with one of the format's fourteen standard fonts, which limits the available character set: see the limits just below.

VerifyThe proof, step by step

The network inspector check, explained one gesture at a time, with screenshots.

The cornerThe PDF corner

The other tools in this corner of the workshop.

UnderstandHow this is built

The formats actually handled, browser by browser, and what we ruled out.