Choosing a resolution
PDFs store instructions for drawing a page rather than a fixed grid of pixels, so converting to an image means choosing how finely to draw it. Higher resolution gives sharper text and much larger files.
| Setting | Best for |
|---|---|
| 96 DPI | Viewing on screen, posting online |
| 150 DPI | General use, sending to someone |
| 200 DPI | Printing at normal quality |
| 300 DPI | Professional printing or archiving |
JPG or PNG?
JPG is right for pages containing photographs, and produces much smaller files. PNG is lossless, which keeps small text and thin lines crisp, but a text page saved as PNG can easily be five times the size of the same page as JPG.
If the page is mostly text and you plan to read it on a screen, PNG at 150 DPI reads noticeably better.
Selecting pages
Leave the pages box empty to convert everything. To pick specific pages, list them separated by commas, using a hyphen for ranges: 1-3, 7, 12-14 converts nine pages and skips the rest. Useful when you only need one page out of a long document.
Questions
Is my PDF uploaded?
No. Rendering happens in your browser using the same engine Firefox uses to display PDFs. Nothing is transmitted, which matters given how often PDFs contain identity documents and financial records.
Can I get all the pages at once?
Yes. When there is more than one page, a Download all button appears and packages them into a single ZIP.
Will the text still be selectable?
No. An image is a picture of the page, so text within it cannot be selected, copied or searched. That is inherent to converting a document into an image, not a limitation of this tool.