What does this tool do?

It adds a soft solid color background to every page of your PDF, making long documents easier on the eyes.

Upload the PDF, pick a background color, and download the result.

Is my PDF uploaded to a server?

No. Everything runs in your browser only and the file is not uploaded.

Add a soft color background to every page of your PDF — easy on the eyes for long reading. Upload the PDF, pick a color, and download it.

Choose PDF file

The file is processed in your browser only — it is not uploaded to a server.

Background color

Or choose your own color

Select your PDF file.
Pick one of the ready colors below, or use the custom color picker to make your own.
Press Apply & Download PDF — the new PDF will download with color applied on every page.

Note: this color goes behind the pages; on pages that are already fully colored, the change will be less visible.

Pick a very light shade so the text stays easy to read on every page.
Print one page first to see how the color looks on paper before converting a long document.
Dark backgrounds can hide light text — keep the original dark text on light backgrounds.