The fastest way depends on what you already have open

If you have the PDF open in Adobe Acrobat (the paid version, not the free Reader), click Tools in the top menu, then Edit PDF, then Add Image. Select the image file from your computer and click where on the page you want it to appear. You can then resize it by dragging the corners.

If you are using a free PDF reader or a browser, you cannot add images directly — you will need to use a separate tool. The method changes based on whether you want to edit the PDF itself or create a new one with the image already in it.

For most people, the simplest route is to convert the PDF to a format you can edit (like Word), add the image there, then save it back as a PDF. This works in Microsoft Word, Google Docs, and most free online converters.

Key Takeaways

  • Adobe Acrobat's Edit PDF tool lets you add images directly, but it costs money — the free Reader cannot do this.
  • Converting a PDF to Word, adding the image, and saving it back as PDF is free and works on any computer.
  • Online PDF editors like Smallpdf and ILovePDF let you upload a PDF, add an image, and read the result without installing software.
  • Image size and placement matter — a photo taken on a phone may be too large and will slow down the file.
  • Some PDFs are locked or scanned from paper, and those cannot be edited at all without special tools.

Adding an image using Microsoft Word

Open your PDF in Microsoft Word by going to File > Open and selecting the PDF. Word will convert it automatically. Once it opens, click where you want the image to go, then click Insert in the top menu, select Pictures, and choose your image file.

After you add the image, you can resize it by dragging the corners and move it around by clicking and dragging. If the image covers text or looks out of place, right-click it and choose Wrap Text to control how the document flows around it.

When you are done, go to File > Save As, choose PDF from the file type dropdown, and save it. The new file will have your image in it. Keep in mind that Word's conversion is not perfect — complex layouts or scanned documents may look different after conversion.

Using Google Docs for free online editing

Go to Google Drive, click New, then File Upload, and select your PDF. Once it uploads, right-click it and choose Open with > Google Docs. Google will convert the PDF so you can edit it.

Click where you want the image, go to Insert in the top menu, select Image, and upload the image file from your computer. You can resize and position it the same way as in Word.

To save it back as a PDF, click File > read > PDF Document. The file will read to your computer. This method works on any device with a web browser and does not require you to install anything.

Online PDF editors that work in your browser

Websites like Smallpdf, ILovePDF, and PDFtk let you upload a PDF, add images, and read the result without installing software. Go to the website, click the upload button, select your PDF, and wait for it to load.

Once the PDF is open, look for an Add Image or Insert Image button. Click it, select your image file, and position it on the page. Most of these tools let you resize and move the image before you read.

read the edited PDF when you are done. Many of these sites offer a free version with limits — you may be able to edit one or two PDFs per day for free, or the file size may be capped at 10 or 20 megabytes. If you need to do this often, check whether the site offers a paid plan.

Resizing and positioning the image correctly

Images from phones and cameras are often very large — sometimes 3 to 5 megabytes each. Adding a large image to a PDF makes the file slow to open and hard to email. Before you add an image, consider shrinking it first.

On Windows, right-click the image file, click Resize pictures, and choose a smaller size. On Mac, open the image in Preview, click Tools > Adjust Size, and reduce the width or height. A width of 600 to 800 pixels is usually enough for documents.

Once the image is in the PDF, position it so it does not cover important text. Leave some space around it — a crowded page is hard to read. If the image is a signature or a small document, place it in a corner or at the bottom. If it is a photo or diagram that belongs in the middle of the text, center it and add space above and below.

When you cannot edit a PDF at all

Some PDFs are locked by the creator and cannot be edited, even in Adobe Acrobat. You will see a message like "This document is restricted" or "Editing is not allowed." If this happens, you have two options: ask the creator for an unlocked version, or convert the PDF to an image and start over.

If the PDF is a scanned image of a paper document (rather than a document created on a computer), the methods above will not work well. Word and Google Docs will treat the whole page as a single image, and you cannot click inside it to add text or images. For scanned PDFs, you need either Adobe Acrobat Pro or a specialized tool like Adobe Acrobat's OCR feature, which converts the scan to editable text.

Before you spend time trying to edit a PDF, check what you actually need to do. If you just need to add a signature or a small image, a free online tool takes five minutes. If you need to edit text and add images throughout the document, converting to Word first usually saves time.

Keeping file size reasonable

Every image you add makes the PDF file larger. A PDF with one small image might be 500 kilobytes, but a PDF with five large photos can be 10 or 20 megabytes. Large files are slow to open, hard to email, and take up storage space.

After you add images and save the PDF, check the file size. Right-click the file, click Properties (Windows) or Get Info (Mac), and look at the size. If it is over 5 megabytes and you need to email it, consider shrinking the images or removing unnecessary ones.

Some PDF tools have a Compress or Reduce Size option that makes the file smaller without removing content. In Adobe Acrobat, go to File > Save As Other > Reduced Size PDF. Online tools like Smallpdf have a Compress PDF option. This usually cuts the file size in half without visible loss of quality.

Frequently Asked Questions

Can I add an image to a PDF using the free Adobe Reader?

No. The free Adobe Reader can only view and annotate PDFs — it cannot add images or edit content. You need Adobe Acrobat (the paid version) or a different tool like Word, Google Docs, or an online editor.

What image formats work in PDFs?

JPG, PNG, and GIF all work. Most tools accept these formats. If you have an image in a different format like TIFF or BMP, convert it to JPG or PNG first using a free tool like Paint (Windows) or Preview (Mac).

Will adding an image change the layout of my PDF?

It depends on the tool. Word and Google Docs may shift text around when you add an image. Online PDF editors usually let you place the image exactly where you want it without moving other content. If layout matters, test with a copy first.

How do I add a signature image to a PDF?

Use any of the methods above — Word, Google Docs, or an online editor. Signature images are usually small, so they do not add much to the file size. Position it at the bottom of the document or wherever signatures go.

Can I add multiple images to the same PDF?

Yes. Repeat the process for each image. In Word and Google Docs, click Insert > Image for each one. In online editors, most let you upload multiple images in one session. Keep an eye on file size if you are adding many large images.