UtilityKit

500+ fast, free tools. Most run in your browser only; Image & PDF tools upload files to the backend when you run them.

PDF Add Image

Stamp a logo, signature, or watermark image onto every page or specific pages of a PDF. Drag-position from a corner.

About PDF Add Image

PDF Add Image lets you overlay a PNG or JPG image — typically a logo, signature, or stamp — onto every page or selected pages of a PDF. The image stays a real embedded image in the output rather than a flattened raster, so it prints crisply and can later be removed if needed. You control four important variables: corner (top-left, top-right, bottom-left, bottom-right, or centre), width as a percentage of page width, margin in PDF points from the page edge, and opacity from 5% to 100%. The page-targeting dropdown lets you stamp every page, just the first page (typical for cover-only logos), just the last page (for sign-here marks), or a custom comma/range list like '1,3,5-7'. Everything runs in your browser via pdf-lib — uploaded files never leave the device, which matters for signed contracts, branded sales decks, and confidential reports.

Why use PDF Add Image

Logo Branding

Drop your company logo onto every page of a sales proposal or invoice in seconds.

Signature Stamp

Add a transparent-PNG signature to the last page of a contract without printing-and-scanning.

Watermark Stamp

Use partial opacity to overlay a 'CONFIDENTIAL' or 'DRAFT' badge on every page.

Per-Page Control

Pick exactly which pages get the image — first page only for cover branding, last for sign-off marks.

Browser-Only Privacy

pdf-lib runs locally — confidential drafts, NDAs, and signed agreements never touch a remote server.

Lossless Embedding

Image and PDF text both remain native, no flattening or quality loss when you re-save.

How to use PDF Add Image

  1. Pick your PDF using the first file picker.
  2. Pick the image file (PNG, JPG, or JPEG) using the second file picker — transparent PNGs work best for logos.
  3. Choose the corner where the image should sit: top-left, top-right, bottom-left, bottom-right, or centre.
  4. Set the width as a percentage of the page (typically 15–25% for a logo, 30–40% for a centre watermark).
  5. Adjust margin (distance from the corner) and opacity (1.0 = solid, 0.3 = ghosted watermark).
  6. Pick which pages to stamp — All, First only, Last only, or a custom list — then click 'Add image to PDF'.

When to use PDF Add Image

  • When you need to brand a sales proposal or invoice with your company logo before sending.
  • When applying a digital signature image to the signature line of a contract.
  • When stamping 'DRAFT', 'CONFIDENTIAL', or 'COPY' onto every page of a sensitive document.
  • When adding a sponsor or partner logo to a co-branded report.
  • When marking certified-copy or notarised documents with a notary stamp image.
  • When personalising a CV or portfolio PDF with a profile photo before submitting.

Examples

Logo on every page

Input: proposal.pdf + logo.png, top-right corner, 15% width, opacity 1, all pages

Output: proposal-stamped.pdf — logo in top-right of each page, never overlapping content

Signature on last page

Input: contract.pdf + signature.png, bottom-right, 25% width, opacity 1, last page only

Output: contract-stamped.pdf — signature image placed on signature line of final page

Confidential watermark

Input: report.pdf + confidential.png, centre, 50% width, opacity 0.3, all pages

Output: report-stamped.pdf — diagonal CONFIDENTIAL watermark across every page

Tips

  • Use a transparent PNG for the cleanest stamp — JPGs come with a white box that hides page content beneath.
  • For corner logos, 15–20% width usually looks balanced; for centre watermarks, 30–50% with low opacity reads well.
  • Margin in points: 24 ≈ 8 mm, 36 ≈ 12 mm — typical print bleed-safe spacing.
  • If you want a diagonal across-page watermark, try centre position with 40% opacity and 50% width.
  • Test with a one-page PDF first if you are unsure of the look — settings are quick to tweak.

Frequently Asked Questions

What image formats are supported?▾
PNG and JPG/JPEG. Use PNG when you need transparency around the image (typical for logos and signatures) and JPG when the image is photographic and transparency is not needed.
Will the image stay sharp at print time?▾
Yes — the image is embedded as a real PDF image object, so it prints at the resolution of your source file. Use a high-res source PNG (at least 600 px wide) for crisp logos.
Can I stamp different images on different pages?▾
One run stamps one image at one position. Run the tool twice to stamp two different images.
Does the stamp cover or merge with text underneath?▾
It draws on top. Use partial opacity (e.g. 0.3) if you want underlying text to remain readable through the stamp.
Can the image be removed later?▾
Yes — because the image is embedded as a separate object, advanced PDF editors can remove it. Treat this as visual marking, not permanent imprinting.
What's the maximum image size?▾
Limited by browser memory, but anything above 2000 px wide is overkill for a stamp and will inflate file size unnecessarily. 600–1200 px works well for most cases.
Does opacity work for JPG sources?▾
Yes — pdf-lib applies the opacity as a graphics-state setting regardless of the image format, though JPGs always have an opaque background where pixels exist.
Can I rotate the image?▾
Not in this tool. To rotate the stamp, rotate the source image in any image editor before uploading it here.

Explore the category

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Glossary

Stamp
An image overlaid onto a PDF page; technically embedded as a PDF image object inside the page content stream.
Watermark
A semi-transparent stamp, typically used to mark a document as draft, confidential, or copy.
Anchor Position
The reference corner from which the image is offset by the margin — top-right, bottom-left, etc.
Opacity
The transparency level of the stamped image — 1.0 is solid, 0.3 is a ghosted watermark effect.
PNG Transparency
A PNG with an alpha channel lets the page content show through where the logo has no pixels.
Page Range Syntax
Comma- and dash-separated list defining which pages to stamp, e.g. '1,3,5-7' means pages 1, 3, 5, 6, and 7.