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Compress a PDF offline, in the browser

Compress a PDF with wifi and mobile data off: open this page once while online, wait for “Ready to use offline”, and you're set.

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About this tool

This tool works offline because your file never had to go anywhere: all the work happens in your browser. The only thing that needs internet is the first load, to bring the page and the engine.

Open this page while online and wait for “Ready to use offline” to appear under the work area. From then on the engine is stored in your browser and you can turn off wifi and mobile data. It is not stored if data saver is on.

iLovePDF Desktop and PDF24 Creator also work offline, but you have to install them; this is the website, nothing to install.

How it works

  1. 01

    While online, open this page.

  2. 02

    Wait for “Ready to use offline”.

  3. 03

    Turn off wifi and mobile data.

  4. 04

    Drop the PDF, press the button and download the result.

Questions

Do I need to open the page first?
Yes, once while online, the same tool you are going to use. Without that the browser does not have the engine and does not promise it: the notice only appears once it is stored.
Does OCR work offline?
Only if you already used it once while online: its model is about 3 MB and is not downloaded in advance.
Does it work on a phone?
Yes, in the phone's browser just like on a computer, with the same notice.

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