About the pdf to image
Converting a PDF to images is normally the point where you hand a document to a website you have never heard of. Contracts, invoices, medical letters and signed agreements all end up on someone else's server for the sake of a format change. This tool does the conversion in your browser instead, so the file never leaves your machine.
Open a PDF and every page is rendered as a thumbnail. Select the pages you want, or take all of them. Each page is drawn using the same rendering engine Firefox uses for PDFs, so text stays crisp and vector graphics are rasterised properly rather than being screenshotted at screen resolution.
Resolution is set by a scale factor. At 1× you get roughly 72 DPI, which is fine for a quick preview. At 2× the output is around 150 DPI and suits most on-screen use. At 3× or 4× you reach print territory, at the cost of larger files and slower rendering. A 300-DPI A4 page is about 2480 by 3508 pixels.
Choose PNG when the page contains text, diagrams or line art, because lossless encoding keeps edges sharp. Choose JPG for pages that are mostly photographic, where the file will be several times smaller. Download pages one at a time or take the whole selection as a ZIP.
Password-protected PDFs need to be unlocked before conversion — the tool will tell you rather than failing silently.