This tool allows you to upload multiple PDFs and change their background color directly in your browser.
No files are uploaded to any server; all processing happens locally for your privacy.
Upload PDFs, pick a background color, and download your updated PDFs. All processing happens in your browser.
Processing Files
Powered by pdf-lib. Only the background color is changed; all other content remains untouched.
Quick Color Chosen
Prefer the command line?CLI version v1.0.0 is also available.
bun run start --help