Add Image to PDF Online Free

Add image to PDF: stamp logos, signatures and photos onto any page

A contract needs your signature on the last page. An invoice needs your company logo in the corner. A report needs a "PAID" stamp graphic across the first page. An add image to PDF tool does exactly that: it takes a picture file — a logo, a scanned signature, a photo, a stamp graphic — and bakes it into the PDF at the position, size and opacity you choose.

This is one of the most practical document finishing steps there is. Instead of printing, stamping or signing by hand and re-scanning (the classic quality-destroying round trip), you place a crisp digital image directly onto the page. The result looks cleaner than a scan, stays fully digital, and takes about thirty seconds.

EzySize's version runs entirely in your browser. You pick exactly which pages get the image, choose one of nine positions, dial the size as a percentage of page width, and lower the opacity for a subtle background mark. A live preview shows page 1 with your settings applied, so there are no surprises in the download.

How to add an image to a PDF online free

1. Drop your PDF onto the upload area. The file opens locally in your browser — nothing uploads, which matters when the document is a contract or anything else you'd rather not hand to a stranger's server.
2. Add your image. Drop in the logo, signature or photo. PNG, JPG, WebP and GIF all work; transparent PNGs keep their transparency, so logos sit on the page with no white box around them.
3. Choose the pages. All pages works for letterheads and branded footers. Even or odd pages suit duplex-printed documents. Custom ranges like 1,3,5-8 handle the signature-page-only case — the tool validates your input against the document's real page count.
4. Set position, size and opacity. Tap one of the nine position squares — bottom-right is the classic signature corner — size the stamp as a percentage of page width, and drop the opacity if you want a subtle background mark instead of a bold stamp.
5. Check the live preview, then stamp. Page 1 renders with your exact settings applied. When it looks right, hit the button and download the finished PDF with the image baked in.

Real-world use cases

Logos on invoices and quotes. Small businesses reuse the same branded corner on every invoice. Stamp the logo top-left or top-right on all pages once, and the document looks professionally letterheaded without rebuilding it in design software.

Signatures on contracts. Sign on paper once, photograph or scan the signature, and stamp it onto signature pages of contracts and agreements. Keep the image small and bottom-right — the conventional signature spot — and at full opacity so it reads clearly.

"PAID" / "APPROVED" stamp graphics. Finance and ops teams mark processed documents with stamp graphics. A semi-transparent stamp image at 40–60% opacity over the first page reads as an official mark without hiding the text underneath.

Photos in reports and portfolios. Insert a headshot into a CV exported as PDF, add product photos to a spec sheet, or place site photos into an inspection report — positioned precisely instead of rebuilt from scratch.

Pro tips for clean stamps

• Use transparent PNGs for logos. A logo on a white square looks amateur pasted onto a colored or textured page background. Export or convert your logo with transparency and it floats cleanly on any page.
• Size in percent, think in context. 15–25% of page width suits logos and signatures; below 10% gets lost, above 40% dominates the page. The live preview is calibrated to the real page, so trust it.
• Opacity is your subtlety dial. Full opacity for signatures and logos that must be unmistakable; 30–50% for background marks, draft stamps and decorative elements that shouldn't fight the text.
• Mind the margins. Corner positions keep a small automatic margin so the stamp never touches the page edge — but check dense pages in the preview; a stamp over a table or chart can hide data.
• One image, one consistent look. Stamping the same image at the same settings across all pages is what makes a document look branded rather than decorated. Resist the urge to use three different sizes on three pages.
• Need text marks instead? For DRAFT, CONFIDENTIAL or date stamps, Watermark PDF stamps text with the same page-picker and opacity controls — the two tools complement each other.

Adding pictures to a PDF, explained

Image stamp vs. text watermark

They solve different problems. An image stamp places a picture file — logo, signature, photo, seal — at a position and size you control. A text watermark renders words like DRAFT diagonally across pages. If what you need is a graphic, stamp an image; if it's words, watermark text.

Which image format works best

PNG for logos and anything needing transparency; JPG for photos. Both embed at full quality. WebP and GIF are converted locally first — visually identical, handled silently by your browser.

Will the stamp stay editable?

No — stamping bakes the image into the page, which is the point: the recipient can't drag it off. To change it, re-run the tool with new settings.

Logos, signatures, stamps, photos — if it's a picture and it belongs on your document, stamp it on in seconds and skip the print-sign-scan ritual entirely.