Turning pages into pictures
Every page of your document is rendered and encoded as a JPG, then packaged into one zip.
The usual reasons: a platform that accepts images but not PDFs, slides that need page previews, thumbnails for a listing, or a page you want to drop into a document or a message.
JPG or PNG?
This is the decision that matters most, and it depends entirely on what is on the page.
JPG for pages that are mostly photographs. Far smaller files, and the compression artefacts are invisible against photographic content.
PNG for pages that are mostly text, tables, diagrams or line art. JPG compression works by discarding high-frequency detail, and a hard black letter against white paper is high-frequency detail — you get visible haloing around the text.
Most documents are text. For most documents, PNG is the better answer.
What you lose by rasterising
A JPG of a page is a photograph of it. Once rendered:
- The text can no longer be selected, copied or searched
- Links stop working
- Scaling up softens everything, because the pixels are fixed
If you need text that stays sharp and selectable, the PDF is already the right format. Rasterise only when something downstream genuinely requires an image.
Why the zip
A fifty-page document makes fifty images. Fifty download prompts would be unusable, so the files are packaged into a single archive — assembled in your browser as well, not built on a server and sent back.
Nothing is transmitted
Rendering happens with PDF.js, Mozilla’s PDF engine, running here in a Web Worker. The Uploaded readout beside the result measures this page’s own outbound network calls and reads 0 B on success.
Questions
- How do I save a PDF page as an image?
- Add the document here and every page is rendered as a JPG, delivered together in a zip. If you only want one page, extract that page into a short PDF first and convert that.
- Will the text look sharp?
- Pages are rendered at a resolution well above screen size, so text is crisp at normal viewing. But a JPG is a photograph of the page: it can no longer be selected, searched or scaled without softening. If you need sharp text at any size, keep the PDF.
- Should I choose JPG or PNG?
- JPG for pages that are mostly photographs, where the file will be far smaller. PNG for pages that are mostly text, diagrams or line art — JPG compression smears hard edges and produces visible haloing around letters.
- Why is the result a zip?
- Because a fifty-page document produces fifty images, and fifty separate download prompts is unusable. The archive is assembled in your browser as well, not on a server.
- Is my document uploaded?
- No. Rendering and encoding both run in this browser tab. The Uploaded readout beside the result measures the page's own outbound network traffic, so a successful conversion reads 0 B.
- Is there a page limit?
- None imposed. Long documents take longer and use more memory, but nothing is rejected on page count.
- Will there be a watermark?
- No. Nothing is stamped onto the images and no feature is held behind a paid tier.
- Can I get a transparent background?
- No. JPG has no alpha channel, and PDF pages have a white background in any case.
- Why is this slower than other conversions?
- Because every page has to be fully rendered before it can be encoded — the same work your PDF reader does to display a page, repeated for the whole document.
- Can I convert just one page?
- Extract the page you want into a single-page PDF first, then convert that. It avoids rendering pages you do not need.