PDF to PNG or JPG? A Simple Rule for Picking the Right One
By the FreePDF team ·
When you convert a PDF to images you have to choose between JPG and PNG. Both turn each page into a picture. The right pick comes down to what's on the page, and there's a simple rule that covers almost every case.
The one-line rule
- Photos on the page, or you want the smallest files: choose JPG.
- Text, diagrams, screenshots, or you need transparency: choose PNG.
Why JPG wins for photos
JPG compression is designed around how the eye reads photographs, so it throws away detail you won't notice and produces a much smaller file. That's why it's the default for email and the web. The catch is that the same compression puts faint fuzz around sharp edges, which you'll spot on small text and thin lines.
Why PNG wins for text and graphics
PNG is lossless, so every pixel is preserved and edges stay razor-clean. Text looks printed rather than slightly smudged, diagrams keep their crisp lines, and transparency is respected. The cost is a larger file, which rarely matters for a page or two.
How much bigger is PNG?
On a photo-heavy page, a PNG can be several times the size of the equivalent JPG. On a plain page with a little text, the gap shrinks and PNG is well worth it for the sharpness. If you're converting a whole document to share online, JPG keeps the total download light; if you're grabbing a single diagram to reuse, PNG is the better keepsake.
Common questions
Which one can I edit or add transparency to later?
PNG. It preserves transparent areas and doesn't accumulate compression damage each time you save, so it's the friendlier choice for further editing.