How to Add an Image or Logo to a PDF

To add an image to a PDF, open the file in an online editor, click the Add Image or Insert Image tool, then upload the picture or logo from your device. The image drops onto the page where you can drag it into position and pull a corner handle to resize it. Set the size and placement, then save and download to bake the image into the file. No installs needed.

Key takeaways

• Adding an image is layering, not editing: you place a picture on top of the page as a new object, so it works even on scanned or locked-looking PDFs without touching what's already there.
• Upload, then place: the standard flow is pick the image tool, choose the file from your device, and the picture lands on the page ready to drag and size.
• Resize from a corner, never an edge, because corner handles keep the aspect ratio while side handles stretch the picture out of shape.
• Start with a high-resolution image, since stretching a small logo bigger than its native size makes it blurry; the editor cannot add detail that was never there.
• Use a transparent PNG for logos so the background does not show as a white box sitting on top of the page.
• No software to install for the basic job; a browser-based editor drops an image on any device, and the picture travels with the file once you export.

What adding an image to a PDF actually does

When you add an image, you are placing a new picture on top of the page as its own object. You are not changing anything that is already on the page, you are floating your own graphic above it. That is the same model as adding a text box, and it is why inserting a picture works in situations where editing the page does not.

A PDF treats every existing element as fixed. The text, the existing graphics, the layout are all locked in place. Adding an image sidesteps all of that: you upload a file, it appears as a new layer, and you move and size it wherever you want. So even on a scanned PDF, which is just an image of a page with no editable content, you can still drop a logo in the corner or a signature on the line, because you are not altering the scan, you are laying a new picture over it.

This is the right tool when you need to put a graphic on the page that was not there before: a company logo on a letterhead, a signature image on a contract, a stamp or seal, a product photo, a QR code, a watermark. It is the wrong tool when there is already a logo on the page and you want to swap it out, which is a replacement job, not a straight addition.

How do I insert an image into a PDF?

Here is the straightforward path using an online editor. You upload the PDF, add the picture, then size and place it.

1. Open your PDF in the editor. Go to the PDF editor and upload the file. Every page opens in your browser ready to work on.
2. Select the Add Image tool. In the toolbar, click the image tool (often labeled Add Image or Insert Image). A file picker opens.
3. Choose the picture or logo. Pick the image file from your device. PNG, JPG, and similar formats all work; use a PNG if you need a transparent background.
4. Let it land on the page. The image appears on the page, usually near the center, with resize handles around it showing it is selected.
5. Drag the image into position. Click the middle of the image and drag it to where it belongs, a corner, a header, on a signature line.
6. Resize from a corner handle. Pull a corner to make the image bigger or smaller. Corners keep the proportions; avoid the side handles, which stretch it.
7. Zoom in to fine-tune placement. At full-page zoom a few pixels are hard to judge, so zoom in and nudge the image to align with margins or existing content.
8. Save and download. Export the file. The image is written into the document and stays with it wherever the PDF goes.

That is the whole task for a single logo or signature. The parts most guides skip are what happens when the image looks fuzzy after you resize it, and how to keep a logo from sitting in an ugly white box. Those are next.

The catch: blurry logos and white boxes

Here is the surprise that catches people. You drop in a small logo, stretch it to fill a header, and it comes out soft and pixelated. The editor did not lower the quality. The problem is that you asked it to display the image larger than its native resolution, and there simply is not enough detail in the original file to fill that space sharply.

An image has a fixed number of pixels. When you make it bigger on the page than its real size, those pixels get spread out and the software has to invent the in-between, which always looks blurry. The fix is to start with a bigger, higher-resolution version of the logo. A 200-pixel-wide logo will look crisp at small sizes and fuzzy when blown up; a 1,000-pixel version handles both. You can always shrink a large image cleanly, but you cannot sharpen a small one by enlarging it.

The second gotcha is the white box. If your logo is a JPG, it carries a solid background, usually white, baked into the file. Drop it on a colored or textured page and you get a white rectangle sitting around the logo. The fix is to use a PNG with a transparent background, where only the logo shape shows and the page behind it stays visible. If all you have is a JPG with a white background, you will need to remove that background before placing it, or accept the box.

• Use the largest version of the logo you have, then shrink it down on the page rather than enlarging a small one.
• Choose a transparent PNG for logos and signatures so no background box shows.
• Check the result at 100% zoom, because a logo can look fine zoomed out and reveal its blur up close.
• Match resolution to use, a logo for screen viewing needs less than one that will be printed at full size.

For a quick internal document none of this is critical. For anything client-facing, starting with a high-resolution transparent PNG is the difference between professional and pasted-on.

Resize and position the image cleanly

Sizing and placing the image well is most of what separates a clean result from a sloppy one. The single rule that matters most: resize from the corners, not the sides.

A stretched logo is instantly noticeable and looks unprofessional, so train yourself to grab corners. If you need precise control over the exact size and placement, our guide on how to resize or move an image in a PDF walks through the handles, nudging, and alignment in more detail.

Position is the other half. For a logo in a letterhead, align it to the same margin as the text below it so the page reads as one designed layout rather than a graphic dropped on at random. Zoom in and use any alignment guides your editor shows as you drag; a logo that snaps to the existing margin looks deliberate, one sitting a few pixels off looks like an afterthought. For a signature, line the image up so it rests on the signature line, not floating above or crashing through it.

Adding an image on different devices

The flow is the same idea everywhere, but the tooling differs.

A common gotcha across phones and free desktop readers: what looks like inserting an image is sometimes an annotation or stamp, which can render differently or get stripped when the file is opened in another program. If the recipient must see your logo or signature exactly where you put it, add it as real content and confirm it survives by reopening the saved file. The online route avoids most of this because the image is written into the document on export.

When adding an image is the wrong move

Dropping in an image is perfect for new graphics: a logo, a signature, a stamp, a photo, a QR code. There are a couple of cases where it is the wrong reach.

If there is already a logo on the page and you want to change it, do not just stack a new image on top. The old logo stays underneath and can peek out around the edges of your new one, or show through if your replacement does not cover it completely. Swapping an existing logo is its own task; our guide on how to replace a logo in a PDF without recreating the document covers doing it cleanly so the old mark is actually gone.

If you have the original source file, the Word document, slide deck, or design the PDF came from, and the image is part of the permanent layout, it is often cleaner to add the picture there and re-export. You get proper placement in the document flow instead of hand-positioning a floating object. Editing the PDF directly is for when you do not have the source, or the addition is a one-off.

A quick word on privacy, since you are uploading a document and an image. An online editor processes your files on a server to add the picture, and files are not kept long-term. That is normal for browser-based editing, but worth knowing before you upload anything sensitive.

A worked example

Say you have a one-page invoice exported as a PDF and you need to add your company logo to the top-left corner where the letterhead should be. You open the file in the PDF editor, pick the Add Image tool, and choose your logo file, a transparent PNG at 1,000 pixels wide, from your computer. The logo lands in the middle of the page at full size, far too big. You grab a corner handle, not a side handle, and shrink it down to letterhead size, keeping the proportions intact. You drag it up to the top-left and zoom in to align its left edge with the margin the address block uses below it. Because the PNG is transparent, the page color shows around the logo with no white box. The rest of the invoice is untouched, you only added a new image on top of empty space. You download the file, reopen it to confirm the logo saved exactly where you placed it and still looks sharp at 100% zoom, then send it on.

FAQ

How do I insert an image into a PDF?

Open the PDF in an online editor, select the Add Image or Insert Image tool, then upload the picture or logo from your device. The image lands on the page with resize handles around it. Drag it into position, then pull a corner handle to size it without distorting it. Zoom in to align it cleanly, then save and download to write the image into the file. It works even on scanned PDFs, because you are adding a new picture on top, not editing the page itself.

Why does my logo look blurry after I add it?

You almost certainly stretched the image larger than its native resolution. A picture has a fixed number of pixels, and enlarging it past its real size spreads those pixels out, so the software has to invent detail that was never there. Start with a higher-resolution version of the logo and shrink it down on the page rather than blowing up a small file. Check the result at 100% zoom, since a logo can look fine zoomed out and reveal its blur up close.

How do I add a transparent logo without a white background?

Use a PNG file with a transparent background. A JPG always carries a solid background, usually white, baked into the file, so it shows as a white box around your logo when placed on a colored or textured page. A transparent PNG shows only the logo shape and lets the page behind it stay visible. If you only have a JPG with a white background, you will need to remove that background first, or accept the box around the image.

How do I resize an image in a PDF without stretching it?

Always drag a corner handle, never a side handle. Corner handles scale the image while keeping its proportions, so it stays the right shape. Side handles stretch only the width or only the height, which distorts the picture, and a stretched logo is instantly noticeable. Pull a corner in to shrink the image or out to enlarge it, then zoom in to align it. For precise sizing and movement, see our guide on resizing or moving an image in a PDF.

Why does my added image disappear or move when I open the PDF elsewhere?

This usually means the image was added as a comment, stamp, or annotation rather than real content, which some readers render differently or strip out entirely. It can also happen if you saved without fully exporting the file. Add the image as actual content and download a flattened copy, then reopen it to confirm the picture is baked in and sitting where you left it. The online editor writes added images into the document on export, so they travel with the file.