How to extract the images embedded in a PDF
- Set a minimum size
120 pixels removes most decorative clutter without losing real figures.
- Extract
Every qualifying image comes back in a ZIP, named with the page it appeared on.
- Check what you got
If nothing comes back, the page graphics are vector drawings rather than images, and PDF to PNG is the tool you want instead.
Why this matters for exam and study documents
Diagrams in a science paper are usually embedded at print resolution. Extracting one gives you a far better copy for revision notes than screenshotting the page ever will.
What is kept, what changes, and what this will not do
Taking content out of a PDF always costs something. Rendering keeps the appearance and discards the text; extraction keeps the meaning and discards the layout. There is no option that keeps both.
Kept
- The original resolution and encoding of every embedded image
- Colour profile, where one was embedded
Changed
- Images are extracted as they were stored, which may differ from how they appear on the page after cropping or masking
- Placement, captions and surrounding context are not included
Limits
- Vector diagrams are drawing instructions, not images, and are not extracted. Render the page with PDF to PNG instead.
- A scanned page is one page-sized image; extracting it returns the whole page.
Questions and answers
Nothing was extracted. Why?
The graphics on that page are vector - lines and curves drawn by instructions rather than stored as pictures. There is no image object to pull out. Use PDF to PNG, which renders what you see.
Why is an extracted image a different shape from the page?
Because the page may show a cropped or masked portion of a larger stored image. You are getting the original, which is usually the better outcome.
Can I use these images anywhere I like?
Extraction does not change who owns them. Exam board material is copyrighted, and personal revision use is a very different thing from republishing.