Add Image to PDF
Place a logo, stamp or photo on PDF pages at any position, size and opacity, or insert images as new pages at the start, end or after any page.
Adding a picture to a PDF usually means a logo in the corner of every page, a signature or stamp on the last page, or a photo inserted as an extra page. This tool does both: it places an image on existing pages at a preset or exact position, with the size and opacity you choose, or inserts images as new pages anywhere in the document. PNG transparency is kept, the rest of the PDF is untouched, and the work happens in your browser.
How to use this tool
- Choose the PDF and one or more images.
- To place an image on pages: pick a position (or exact X/Y in mm), the width and the opacity, and which pages.
- To add new pages: choose "Insert as new pages", where they go and the page size.
- Download the PDF.
Formula
Width in % uses the page width as displayed: image width = page width × % ÷ 100, and the height follows the image's proportions (height = width × pixel height ÷ pixel width). Corner positions are inset by the edge distance; X and Y are measured from the top-left corner of the page to the top-left corner of the image.
Inserted images are centred on their new page and never enlarged beyond their natural size of 96 pixels per inch (pixels × 0.75 pt).
Example
A 1200 × 400 px logo placed bottom right at 20% width with a 10 mm edge distance on an A4 page (595 pt wide) becomes 119 × 39.7 pt (about 42 × 14 mm), with its right edge 28.3 pt (10 mm) from the page edge on every page.
Frequently asked questions
Will a transparent PNG stay transparent?
Yes. PNG transparency is kept, so a logo or signature on a transparent background sits cleanly on the page.
How do I put a signature on the last page only?
Choose "Place the image on existing pages", type "last" in Pages, and pick a position or exact X/Y.
Can I add a photo from my iPhone?
Yes — HEIC photos are decoded in your browser first. JPG photos keep their original quality because they are embedded as they are.
Are the files uploaded?
No. The PDF and images are combined on your device.
Last updated:
Page address with these inputs: https://kakao.mobile/tools/add-images-to-pdf-tool/
Cite or embed this tool
kakaoCalc. (2026, November 8). Add Image to PDF. https://kakao.mobile/tools/add-images-to-pdf-tool/
“Add Image to PDF.” kakaoCalc, 8 Nov. 2026, kakao.mobile/tools/add-images-to-pdf-tool/.