Use the free PDF Page Background Color below: choose a PDF, adjust the settings, and download your edited PDF. Your PDF never leaves your browser — all processing happens on your device, and nothing is uploaded to any server.
Why Add a Background Colour to PDF Pages?
Most PDFs have white pages. White is clean, but it is not always the best choice. A worksheet for young children is more inviting on a soft yellow page. A reading document for someone with light sensitivity is easier on a gentle cream or pale blue. A certificate or invitation looks more special on a tinted page. A set of documents colour-coded by section is easier to navigate when each section has its own background.
The PDF Page Background Color tool on this page adds that colour in your browser, free, with no sign-up. You pick a colour, choose which pages get it, and download the new PDF. The colour sits behind your content, so text and images stay fully readable on top.
How the Tool Works
Putting colour behind existing PDF content is trickier than it sounds. Simply drawing a coloured rectangle onto a page would paint over the text, hiding it. So this tool rebuilds the document page by page: it creates a fresh page of the same size, paints the background colour on it first, and then draws the original page’s content on top. The result is a page where the colour is genuinely behind everything, exactly as if the document had been printed on coloured paper.
The tool uses pdf-lib for this rebuild. You can colour every page, or selected pages with a list like 1,3-5. Pages you do not select keep their original white background. That makes section colour-coding easy: colour pages 1 to 5 blue, then run the tool again on the result to colour pages 6 to 10 green, and so on.
How to Add a Background Colour
Choose a PDF and pick a colour with the colour picker. Light colours work best: pale yellow, cream, light blue, mint and blush pink all keep black text perfectly readable. Then decide on the pages. Leave the pages field blank to colour the whole document. Use a list when only part of it should change. Press the button and download the result.
Open the new PDF and check a few pages, especially any with photos or coloured headings. Photos will look the same, because they sit on top of the background. Headings in dark colours will still read well on light tints. If you chose a dark background, check that black text is still readable: on a dark page, black text disappears, so dark backgrounds suit documents with white or light-coloured text only.
Choosing the Right Colour
For reading comfort, cream and pale yellow are the safest choices. They reduce glare without changing how the document feels. For children, soft pastel colours add fun without hurting readability. For formal documents, a very pale tint, barely different from white, adds distinction without looking unprofessional. For section coding, choose colours that are clearly different from each other, like blue, green and yellow, but keep them all pale.
Avoid saturated colours for body text pages. A bright red or deep blue background may look striking as a thumbnail, but it makes long reading tiring and can cause problems when printed, because printers use a lot of ink on full-page colour. If you plan to print, stick to pale tints and print one test page first.
Printing Considerations
Background colours print as ink, which costs more and can look different on paper than on screen. Some printers also have a setting that skips background colours to save ink, in which case your tint will not appear on paper at all. That is a printer setting, not a fault in the file. If the printed result matters, check your printer’s background printing option before printing a long document.
Also note that a coloured background increases file size slightly, because each coloured page carries an extra drawing instruction. For normal documents the increase is negligible.
Privacy
Your PDF never leaves your browser. All processing happens on your own device with pdf-lib. Nothing is uploaded, nothing is stored, and no account is needed.
Frequently Asked Questions
Will the colour cover my text? No. The colour is drawn first and your content is drawn on top, so text and images stay visible.
Can I colour only some pages? Yes. Enter the page numbers, like 1,3-5, or leave the field blank for all pages.
Can I remove the colour later? Run the tool again with white as the colour, or keep your original file and colour only copies.
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