PDF to PNG

Convert PDF pages to PNG — the better choice when you need crisp text and line art, or a transparent background.

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Getting crisp images out of a PDF

A PDF page is a set of drawing instructions rather than a picture, so converting it to PNG means choosing how large to draw it. Resolution is the whole decision, and it is the reason most converted pages look softer than the PDF did on screen.

Choosing a resolution

  • 150 DPI — about 1240 pixels across an A4 page. Right for screens, slides and documents.
  • 300 DPI — about 2480 pixels. Print quality, and the point where more detail stops being visible.
  • 600 DPI — about 4960 pixels. Only for fine print or detailed drawings someone will zoom into.

Many converters default to 72 or 96 DPI without saying so. If a page looks blurry, that is almost always why, and converting again at 150 or 300 fixes it immediately.

Why PNG for pages of text

PNG is lossless, so letters keep hard edges. JPG compression works by discarding detail exactly where contrast is highest, which is every edge of every character, so text picks up a faint grey halo. For pages that are mostly words, tables or line drawings, PNG is clearly better. For pages that are mostly photographs, JPG will be far smaller for the same appearance.

Transparency

PNG supports transparency and PDF pages have a white background, so converted pages come out with solid white behind them rather than a transparent one. Extracting a logo with its transparency intact is a different job from converting the page it sits on.

More on this: how resolution and format affect the result.

Questions people ask

PNG or JPG — which should I pick?

PNG for text, diagrams and screenshots. JPG for photo-heavy pages, where the files come out much smaller.

What resolution should I use?

150 DPI for screen use, 300 DPI for print. Below 150 text starts to soften; above 300 you are mostly adding megabytes.

Why are my PNG files so large?

PNG is lossless, so a full page at 300 DPI is a big image. Lower the resolution if the files are for screen use, or convert to JPG if the pages are photographic.

Can I convert only some pages?

Yes. Extract the pages you want first and convert that shorter file — quicker, and no sorting through output you did not need.

How to use it

Works well with