When You Need PDF Pages as Images
A PDF is perfect for documents but awkward the moment you need a picture. Posting a page to Instagram or a chat app, dropping a diagram into a slide deck, showing a preview thumbnail on a website, or attaching a page where the other side can't open PDFs — all of these want an image, not a document. Converting each page to a JPG gives you a file that every app, phone and platform displays instantly.
How Pages Are Rendered to JPG
The pdf.js engine draws each page onto a canvas at your chosen resolution, then exports it as a JPEG. A single-page PDF downloads as one image; a multi-page PDF is packaged into a ZIP — one neatly numbered JPG per page — using the JSZip library, so a hundred pages arrive as one tidy download instead of a hundred prompts. Every step runs in your browser, and nothing is uploaded.
Choosing Quality
Pick High when the images will be viewed full-size, printed or zoomed — it renders at higher resolution for crisp text and lines. Pick Medium when you need smaller files for messaging or quick previews. JPEG is a lossy format, so High is the safer choice whenever sharpness matters.