Add a subtle color tint to all pages in a PDF document. Upload your PDF and pick a background color. Tint every page uniformly for branding or readability themes — local pdf-lib work, unlimited saves.
Runs on pdf-lib
Content reviewed October 2026 · About Toolzum
Add sequential Bates numbers to every page of your PDF. Customize prefix, starting number, and position. Prefixes, start numbers, and positioning per filing rules — local pdf-lib work, unlimited saves.
Trim margins off every page of a PDF at once — remove scanner shadows and overscan. Clean a 50-page scan set for reading — local pdf-lib work, unlimited saves.
Stamp headers and footers on every PDF page — page numbers, dates, confidentiality lines. Number a 100-page report in one pass — local pdf-lib work, unlimited saves.
Remove hiss, hum, and background noise from recordings with profile-based reduction. Rescue fan-noisy interviews in one pass — local FFmpeg work, unlimited saves.
Grade videos with 18 filters across Color, Artistic, Blur, and Lighting (grayscale, sepia, pixelate, gaussian blur, vignette, brightness/contrast/saturation) plus a live still-frame preview. Export MP4, WebM, or GIF — local FFmpeg work, unlimited saves.
Adds a colored background layer to every page in a PDF. Choose any color and the tool inserts a full-page colored rectangle behind the existing content.
No. The background color is placed behind the existing content. Text and images remain visible on top of the colored background.
The basic tool applies one color to all pages. For per-page colors, process pages individually or use a PDF editor.
Minimal. The color layer adds very little data. File size may increase by 1-5% depending on page count.
No. All processing happens locally in your browser using pdf-lib. No PDF data is uploaded to any server.
Watermark PDF
Stamp text watermarks across PDF pages — DRAFT, CONFIDENTIAL, custom text with opacity. Protect 50 filings before sharing — local pdf-lib work, unlimited saves.
PDF Stamp
Add a diagonal watermark stamp (DRAFT, CONFIDENTIAL, etc.) to every page of your PDF — mark review copies and control document status visibly. Runs locally in your browser.