PDF to JPG

Drop the file in, pick the resolution and quality, and press Start. Every page comes back as its own JPG. Nothing is uploaded, there is no sign-up, no watermark is added and there is no limit on how many files you convert.

That file is a zip holding the 20 images. From four images up the results are zipped, because a browser silently blocks a page that starts a long run of downloads — Chrome stops after about ten. Three or fewer download as separate images.

150 DPI is the default and is right for reading on a screen or dropping a page into a slide: a Letter page lands at 1275 × 1650 pixels. Choose 300 DPI if the image will be printed or cropped into, and 72 DPI for a thumbnail or a forum post. Bytes grow with the square of the resolution, so 300 DPI is about four times the size of 150.

JPEG stores colour changes loosely, and the sharp black-on-white edge of a letterform is the worst case for it. Raise the quality, raise the resolution, or choose PNG — PNG keeps the edge exactly as drawn, at several times the file size.

Yes, a little. A scanned page is already a compressed photo inside the PDF; converting decodes it and compresses it again, so a JPG here has been through two rounds. The page says so when it sees a PDF with no text layer. High quality, or PNG, keeps the second round from showing. At 300 DPI the images can also add up to more than the PDF they came from — that is normal, because the PDF was storing one compressed photo per page and you are now asking for a larger one.

One run stops at 300 pages and tells you where it stopped. The reason is memory: every finished image stays in this tab until you download it, and a long document at 300 DPI is what runs a browser out of it. Split the PDF first, or convert the rest in a second run. Separately, no browser can read a file over about 2 GB in one piece, and you get a plain message rather than a frozen page if you try.

If it is password-protected, the file says so in the list. This page does not ask for the password — unlock the PDF in the program that made it or in a reader, save an unlocked copy, and bring that here.

No. The PDF renderer is downloaded from this site into your browser, and it reads the file straight from your disk. You can have the network panel open the whole time; nothing goes out.