What PDF Background does
PDF Background adds a colour, gradient or image layer behind the content of each chosen PDF page, letting you brand or style a document without altering its text.
- Solid, gradient or image
- Behind existing content
How do I add a background to a PDF?
Add a background to a PDF by uploading your file, choosing a solid colour, gradient or image, and applying it behind the page content. Set the pages and opacity, then download the result. It runs in your browser, so the document is never uploaded.
- Solid colour, gradient or image backgrounds
- Adjust opacity so text stays readable
- Apply to all pages or a range
- 100% client-side
What is
PDF Background
A tool that places a colour, gradient or image layer behind the existing content of PDF pages while keeping the text and graphics on top.
PDF Tools
Related terms
watermarkPDF editor
Frequently Asked Questions
Yes, adjust opacity.
The background sits behind existing content and you can lower its opacity so text and graphics remain fully legible on top.
Yes.
Upload any image to use as the page background, tiled or scaled to fit the page.
No.
The background is composited locally with pdf-lib; nothing is sent to a server.
Detailed Explanation
How it works
The tool draws the chosen background onto each selected page beneath the existing content stream using pdf-lib, then saves a new PDF.
- Composited with pdf-lib
Use cases
Add letterhead colour, a subtle brand tint, a themed backdrop for certificates, or a texture behind plain reports.
- Branding and letterhead
Limitations
Backgrounds sit behind existing content; they cannot recolour text that is already drawn, and very dark backgrounds may reduce readability.
- Behind-content only
Privacy
Everything is composited in your browser; the PDF and any background image never leave your device.
- 100% local