At a glance
| Input | |
|---|---|
| Output | One JPG per page, or all of them in a ZIP |
| Resolution | 1.5x, 2x or 3x the page size |
| Where it runs | Entirely in your browser — no file is uploaded to a server |
| Price | Free, with no account and no sign-up |
| Offline | Works with no connection after the first visit |
Choosing the resolution
A PDF page has no pixels — it is drawing instructions — so it has to be rendered at a resolution you choose. 150 DPI is fine on screen; 300 DPI is the standard for print and gives an A4 page around 2480 by 3508 pixels.
Higher is not automatically better. Text renders sharply at any resolution because it is vector, but a photograph embedded at 150 DPI does not gain detail from being rendered at 600 — you get a larger file containing the same picture.
JPG or PNG
PNG for pages that are mostly text or line art: it is lossless and the edges stay crisp. JPG for pages dominated by photographs, where it is much smaller and the compression is not noticeable.
Using JPG on a text-heavy page produces the faint halos around letters that make scanned documents look degraded.
Frequently asked questions
What DPI should I use?
150 for screen, 300 for print. Beyond that you get a larger file rather than more detail, unless the page contains very high-resolution images.
Why does my text look fuzzy?
Either the resolution is too low, or you saved as JPG. Text is vector in a PDF and stays sharp — use PNG for text-heavy pages.
Can I convert only some pages?
Yes — give a page range rather than converting the whole document.
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