Adding an image to an existing PDF used to require expensive software. Now you can do it in seconds with free online tools.
Common Use Cases
- Add a logo to contracts or invoices
- Insert a signature image
- Add photos to reports
- Place a stamp or seal
- Include QR codes for easy access
- Add screenshots to documentation
Method 1: Online PDF Editor (Recommended)
Step-by-Step with LexoSign:
- Go to lexosign.com/edit-pdf
- Upload your PDF
- Click Add Image in the toolbar
- Select your image file (JPG, PNG, etc.)
- Click where you want to place it
- Resize by dragging corners
- Reposition by dragging
- Click Save and download
Supported formats: JPG, PNG, GIF, BMP, WEBP
Tips for Best Results
Image Size:
- Resize images before uploading for faster processing
- 1000-2000px width is usually sufficient for documents
- Larger images increase PDF file size
Transparency:
- Use PNG for images with transparent backgrounds
- JPG doesn't support transparency (white background)
- Transparent PNGs work great for logos and stamps
Positioning:
- Hold Shift while resizing to maintain aspect ratio
- Use guides if available for alignment
- Zoom in for precise placement
Method 2: Add Image as Signature
If you're adding a signature image:
- Go to lexosign.com/sign-pdf
- Upload your PDF
- Click Signature > Upload Image
- Select your signature image
- Place where needed
- Download the signed PDF
Signature image tips:
- Sign with a dark pen on white paper
- Photograph in good lighting
- The tool automatically removes the white background
Method 3: Preview on Mac
- Open PDF in Preview
- Open the image in another Preview window
- Select All (Cmd+A) on the image
- Copy (Cmd+C)
- Switch to PDF, paste (Cmd+V)
- Resize and position
- Save
Note: This adds the image as an annotation, which some readers may display differently.
Method 4: Create New PDF with Image
If you need to add images to multiple pages or create a new document:
- Create your document in Word/Google Docs
- Insert images where needed
- Export to PDF
This gives more control over layout but doesn't work for editing existing PDFs.
Image Preparation Tips
For Logos
- Use vector format (SVG) if available, convert to PNG
- Use PNG with transparent background
- Ensure resolution is at least 150 DPI at intended size
- Remove any white background before uploading
For Photos
- Resize to actual display size (don't insert 4000px image for a 400px display)
- Use JPG at 80% quality for best size/quality balance
- Consider compression before inserting
For Signatures
- Sign on clean white paper
- Use a dark pen (black or dark blue)
- Photograph from directly above, not at an angle
- Crop closely around the signature
- Use tools that auto-remove the white background
For QR Codes
- Generate QR code at sufficient size (300x300px minimum)
- Use PNG format
- Ensure adequate white space around the code
- Test the QR code works before finalizing the PDF
Troubleshooting
"Image Is Blurry"
- Original image resolution too low
- Upload a higher resolution version
- Don't stretch small images larger than their original size
"Image Has White Box Around It"
- Image isn't transparent
- Use PNG with transparency
- Use a tool with background removal
- Or manually remove background before uploading
"Image Is Rotated Wrong"
- Rotate the image before uploading
- Or use the editor's rotate function
- Check image orientation in your photo viewer first
"File Size Increased Dramatically"
- Image is too large
- Resize image before inserting
- Compress the PDF after adding the image
- Use JPG instead of PNG for photos
"Can't Move or Resize Image"
- The PDF may be locked
- Unlock the PDF first
- Some PDFs have editing restrictions
Adding Images to Multiple Pages
Same Image on Every Page (Like a Logo)
Most online tools add images one page at a time. For multi-page logos:
- Add image to first page
- Save
- Re-upload and add to next page
- Repeat
Or use the watermark tool to add a logo to all pages at once.
Different Images on Different Pages
- Add all images in one session
- Navigate between pages in the editor
- Add relevant images to each page
- Save all changes at once
Method Comparison
| Method | Best For | Limitations |
|---|---|---|
| Online PDF Editor | Most users | Internet required |
| Sign PDF tool | Signatures | Single image type |
| Mac Preview | Mac users | Annotation-style only |
| Word > PDF | New documents | Doesn't edit existing PDFs |
Conclusion
Adding images to PDFs is now free and easy. For most users, an online PDF editor is the fastest option.
Add images to your PDF at LexoSign - drag and drop, no signup required.
Remember: prepare your images properly (right size, transparent backgrounds for logos) for the best results.