How to export PDF pages as images without them coming out fuzzy

You need a page from a PDF as a picture — for a slide, a listing, a message, a document that will not accept PDFs. You export it, and the result is soft, or enormous, or has grey fringing around the text.

All three come from the same place: the choices made at the moment the page is turned into pixels.

A PDF page has no resolution

This surprises people. Most PDF pages are described mathematically — this line runs from here to here, these characters are set in this font at this size. There are no pixels involved, which is why you can zoom into a PDF indefinitely and the text stays sharp.

An image is the opposite: a fixed grid of pixels. So exporting a page as an image means choosing how finely to sample it, and that choice is yours rather than the document's. Ask for too few pixels and you get a blurry picture of a perfectly sharp page.

The setting is usually expressed as DPI. It describes how many pixels are produced for each inch of the original page, and it is the single most important choice in the whole operation.

Choosing a resolution

• 72 to 96 DPI: a small preview. Body text will not be comfortably readable
• 150 DPI: fine for viewing on screen at roughly page size
• 300 DPI: the sensible default. Sharp on screen, good enough to print
• 600 DPI: for fine detail or large printing. Files get big quickly

When in doubt, 300 is the right answer. It produces an A4 page at roughly 2480 by 3508 pixels, which looks sharp everywhere and prints acceptably, and it is the resolution most people mean when they say high quality.

Going higher is not free. Doubling the DPI quadruples the pixel count and roughly quadruples the file size, and beyond the resolution of the original content it adds nothing. A page whose only content is a 150 DPI scan gains no real detail from being rendered at 600.

JPG or PNG

This choice matters more for document pages than for photographs, because of what is on them.

JPG is lossy and tuned for photographs, where colour changes gradually. Document pages are the opposite: sharp black text against white paper, which is the worst case for JPG compression. The result is grey halos around letters, visible at any zoom.

PNG is lossless and handles exactly that pattern well — large flat areas and hard edges compress efficiently and come back exactly as rendered. For a text page, PNG is usually both sharper and not much larger.

The rule follows from the content: pages that are mostly text or line art, use PNG. Pages that are mostly photographs, use JPG. Pages that are both, decide by which matters more.

Getting a clean export

1. Decide where the image will be used, since that sets the resolution you need.
2. Choose 300 DPI unless you have a specific reason to go higher or lower.
3. Pick PNG for text-heavy pages and JPG for photographic ones.
4. Export, then view the result at full size and check the smallest text.
5. Compress afterwards if the file is larger than you need, rather than exporting at a lower resolution to begin with.

That last point is worth following. Rendering at a good resolution and then compressing gives you a better result than rendering badly, because you can always discard detail later and you can never add it back.

What you lose in the conversion

An exported page is a picture. The text is no longer selectable, searchable or copyable, links stop working, and screen readers can no longer read it. If any of that matters, exporting to an image is the wrong move.

This cuts both ways. Sometimes losing the text layer is exactly the point — an image cannot be edited as easily and carries no hidden content underneath. But it is a deliberate trade rather than a free one, and it is worth making knowingly.