PDF to images (PNG, JPG, WebP)

What this tool does

Choose a PDF and every page you pick is drawn as a picture: PNG for crisp text and diagrams, JPG for photos and scans, or WebP when the result goes on a web page. You set the resolution in DPI (dots per inch), choose all pages or a range such as 1-3, 7, 10-, and save one image or a ZIP with all of them, named report-p001.png, report-p002.png and so on so they sort in page order. Password-protected PDFs open after you type the password. The file is read and drawn in this tab with pdf.js, the same open-source renderer Firefox uses to show PDFs; nothing is uploaded.

Choosing the DPI

A PDF page has no pixels. It is measured in points, 72 to the inch, and the DPI decides how many pixels each inch becomes. The pixel size is simply points × DPI ÷ 72:

• A4 (595 × 842 pt) is 794 × 1123 px at 96 DPI, 1240 × 1754 at 150 DPI and 2480 × 3508 at 300 DPI.
• US Letter (612 × 792 pt) is 1275 × 1650 px at 150 DPI and 2550 × 3300 at 300 DPI.

Doubling the DPI makes four times as many pixels, so the files grow about four times as well. 150 DPI is a good default for reading on a screen, sharing in a chat or pasting into slides. 200 DPI helps text-recognition software with small print. 300 DPI is for printing the image again at its original size. Above that you mostly get bigger files: a page scanned at 200 DPI does not gain detail when drawn at 600. The article on DPI works through these numbers in detail.

Very large pages (posters, engineering drawings) can exceed what a browser canvas holds. The tool keeps each image under 25 megapixels and 16,384 pixels on its longest side; a page that would be larger is drawn at the highest DPI that fits, and the tool tells you before it starts.

PNG, JPG or WebP

• PNG is lossless: text edges stay perfectly sharp and flat colours stay flat. Best for documents, charts and anything you will zoom into. It can keep the page background transparent, which helps when you place a logo or a signature page over something else.
• JPG is much smaller for photos and scanned pages, but it blurs sharp edges slightly and has no transparency, so the page is always on white. Quality 85 to 92 is hard to tell from the original.
• WebP is usually smaller than both at the same look and works in every current browser, but some older desktop programs cannot open it.

Steps

1. Choose or drop a PDF (one file, up to 100 MB). If it asks for a password, type it.
2. Pick the DPI, the format and, for JPG or WebP, the quality.
3. Keep "All pages" or type the pages you want.
4. Press Convert to images. Pages are drawn one at a time with a progress bar; you can stop at any time and keep the pages already done.
5. Save single pages, or Download all (ZIP).

Good to know

• Pages are drawn in order and only one page is in memory while it is drawn, so long documents work; the finished images stay in the tab until you leave, so save the ZIP when you are done. One run is limited to 500 pages.
• Fonts that the PDF does not embed are drawn with standard substitutes, and Chinese, Japanese and Korean text uses the character maps served by this site, exactly as in a PDF viewer.
• To go the other way, from photos to one PDF, or to merge, split and rotate PDFs, use the PDF toolkit. To shrink or convert the resulting images in bulk, use the image toolkit.