Why convert a PDF to images
Sometimes a PDF is the wrong container. You may want to drop a single page into a slide deck, post a certificate on social media, or send a one-page flyer through a chat app that does not preview PDFs. A JPG works in all of those places.
Each page becomes its own image, named in order, so a 12 page PDF gives you 12 JPGs in the ZIP.
Quality and file size
Higher quality gives sharper text and larger files. For on-screen sharing, a medium to high setting is plenty. For pages with small print or fine line drawings, raise the quality so letters do not look fuzzy at the edges.
JPG is designed for photographs. Pages that are mostly text will not look as crisp as they do in the PDF, because the PDF stores letters as shapes and the JPG stores them as pixels. If crispness is the priority, view the PDF itself where you can.
As a rough guide, 70 to 80 percent suits colorful pages like brochures. For black and white forms, 85 percent or higher keeps the thin lines clean. Test with one page of the PDF first if you are unsure, using the extract tool to save time.
Since the JPG quality setting also affects the size of the ZIP, a high setting on a long document can produce a large download. If you are converting 50 pages for email, a medium setting is usually the better trade.
Extracting images versus rendering pages
This tool renders the whole page as it appears, text, graphics and photos together. It does not pull out the original embedded pictures one by one. For a brochure that is exactly what you want. For a single embedded photo you would need the page, then a crop.
If you only need some of the pages, extract them into a smaller PDF first so the conversion is faster and the ZIP is tidier.
Page size on screen is fixed by the render, so zooming into the JPG later will not reveal more detail than was drawn. Keep that in mind if you need to read tiny print.
Limits and privacy
The PDF can be up to 100 MB. Rendering uses your device, so long documents take longer on older phones. Encrypted PDFs are not supported. Since nothing is uploaded, it is safe to convert pages containing personal details, though you should still be careful about where you share the images afterward.
The ZIP names each image by page number, so they stay in order when you unzip them and sort by name.