EDIT PDF
Free Add Background online
Put a colour behind your PDF pages.
Add Background is a free browser tool that lets you put a colour behind your PDF pages. Drop your file into Add Background, choose your settings, and save the finished file. Add Background works on your device only, so no file or text is ever uploaded.
- Free to use
- No signup
- No uploads
- Works offline
Why use Add Background
- put a colour behind your PDF pages without installing software
- Your file is processed on your device by Add Background, never uploaded
- Add Background needs no account, email address or payment details
- Add Background is batch-friendly: reuse it immediately on the next file
- Add Background is keyboard accessible and screen-reader friendly
- Add Background is free forever, with no watermark on the result
Add Background runs entirely inside your browser. Your file is never uploaded, stored or shared, and nothing is retained once you close the tab.
How to use Add Background
- Add your file Drag your file onto the drop zone or pick it from your device.
- Adjust the options Set the options that control how Add Background handles your input.
- Run the tool Add Background works instantly on your device, with no queue and no upload wait.
- Download the result Save the finished file straight to your device, then reuse the tool as often as you like.
Benefits
Private by design
Your file stays on your device while Add Background works. Add Background never sends it to a server, so confidential work stays confidential.
Instant results
Add Background finishes most jobs in under a second because the work happens on your own hardware.
No signup, no limits
Use Add Background as many times as you want. Add Background asks for no account, adds no watermark and keeps no paid tier gating the output.
Works offline
Once the page has loaded, Add Background keeps working without a connection, which helps on flights and locked-down networks.
Who it is for
For students
Students use Add Background to hand in coursework without installing software: put a colour behind your PDF pages on a shared or locked-down machine.
For freelancers
Add Background helps freelancers send client deliverables quickly, since your file never leaves the laptop it was created on.
For HR and admin teams
Add Background helps HR and admin teams process paperwork quickly, since your file never leaves the laptop it was created on.
How it works
Add Background loads your file into memory, applies the change you requested to the underlying data rather than to a screenshot of it, and writes a fresh copy for download. Your original stays untouched on disk, and every step of Add Background happens inside your browser sandbox.
Frequently asked questions
Is Add Background free to use?
Yes. Add Background is completely free with no account, no trial and no usage cap. Every feature on this page is available on the first visit.
Does Add Background upload your file to a server?
No. Add Background processes your file inside your browser, so it never reaches a DocTools server. That also means the tool keeps working if your connection drops mid-task.
Is there a file size limit?
The practical ceiling is your device's available memory rather than a server quota. Files up to roughly 100 MB work comfortably on a typical laptop in Add Background.
Do I need to install anything to use Add Background?
No installation is needed. Add Background runs in Chrome, Edge, Firefox and Safari, on desktop and on mobile, with no extension or plugin.
Can I use Add Background on a phone or tablet?
Yes. The Add Background interface adapts to small screens and supports touch input, though very large jobs are faster on a desktop browser.
What happens to your file when I close the tab?
It is discarded. Add Background keeps everything in temporary browser memory, so closing the tab removes every trace of the session.
Related tools
- Remove Background | Strip background from PDF pages
- Merge PDF | Combine multiple PDFs into one document
- Split PDF | Separate a PDF into individual pages
Last updated: 2026-09-07