| Where files are processed | In your browser. The file is never uploaded. |
|---|---|
| How long files are kept | Nothing is kept on a server, because nothing is sent to one. |
| Free limits | No caps on files, pages or tasks. Your device's memory is the practical limit. |
| Account | None |
| Price | Free |
| Ads | None |
| Offline option | No app. Works in any current browser, on desktop and phone |
Changes are made on your device, in memory. The original file is untouched and the new one is only created when you press the button.
The colour goes behind the content. If a page already has a white box painted over it, as many exported documents do, the colour only shows in the gaps.
Yes. The original page is placed on top of the colour without being converted.
Your PDF probably paints its own white background. Try Invert colours or Black and white instead.
PDF tools