PNG: the right choice for text-heavy pages
JPG compression was designed for photographs, and it shows on documents: fine lines smear and letters grow faint halos. PNG is lossless — whatever the PDF engine renders is exactly what lands in the file, pixel for pixel. For pages that are mostly text, diagrams, or line art — invoices, forms, sheet music, technical drawings — PNG output keeps every stroke clean at full zoom. The trade-off is size: a PNG of a dense page can be several times larger than its JPG equivalent, which is the honest reason both formats exist on this site.
How the conversion runs
Each page is rendered by pdf.js, the engine Firefox uses to display PDFs, inside a background thread of your browser, then encoded as a PNG at your chosen resolution — Screen (72 DPI), Good (150 DPI), or Print (300 DPI). A one-page document downloads as a single image; longer files arrive as a ZIP with one numbered PNG per page, ready to drop into slides or documentation in order.
No upload, no account, no watermark
The whole pipeline runs on your own machine: the PDF is opened, rendered, and encoded locally, and no network request ever contains your document. That matters for the files people actually convert — contracts, statements, records. There is no sign-up, no daily cap, and nothing stamped over the images. If a PDF is password-protected, remove the password first with the Unlock PDF tool, which is equally local.