How to use
- Drop the PDF onto the box, or choose it. A PDF with a password asks for it first.
- JPG is already chosen. Choose the resolution: 150 dpi suits a screen, 300 dpi suits printing. You can limit it to pages, for example 1-3, 5.
- Press Convert, then download each picture, or all of them as a ZIP.
Examples
A 10-page PDF, all pages at 150 dpi
→ 10 JPG files, report-page-01.jpg to report-page-10.jpg, in a ZIP150 dpi gives about 1,240 × 1,754 pixels for an A4 page.
Pages 1-3, 5 at 300 dpi
→ 4 picturesPrint quality.
A scanned PDF
→ One picture per scanned pageTo read the text of a scan, use Image to Text.
An A4 page at 72 dpi
→ 595 × 842 pixels72 dpi is one pixel per PDF point, so it is the page at its nominal size, good for a small preview.
An A4 page at 300 dpi
→ 2480 × 3508 pixelsAbout 8.7 million pixels. A poster-sized page at this setting may be refused as too large.
A PDF of 120 pages
→ report-page-001.jpg to report-page-120.jpgThe page numbers get as many digits as the last page needs, so the files sort in order.
How it works
This page is the PDF to image tool with JPG already chosen. Each page is drawn onto a canvas by PDF.js, Mozilla’s open-source PDF renderer, at the resolution you pick, and then written as a JPG. The PDF is read in your browser and is never uploaded.
How big the pictures come out
A PDF page is a size, not a grid of pixels, so the picture’s pixels depend on the resolution you choose.
| Setting | A4 page | Roughly suits |
|---|---|---|
| 72 dpi | 595 × 842 | A thumbnail or a quick preview |
| 150 dpi | 1240 × 1754 | Reading on a screen |
| 200 dpi | 1654 × 2339 | Sharper reading, small print |
| 300 dpi | 2480 × 3508 | Printing |
Doubling the dpi quadruples the pixels, and the file grows with it, so use the lowest setting that you can still read comfortably.
What gets lost, and what does not
Everything on the page is drawn, including text, drawings and photos, but it becomes pixels. The text can no longer be selected or searched, links stop working, and a form’s fields are flattened into what they look like. The JPG is a copy for viewing or sharing, not an editable file. If you only need a few lines of text out of a PDF, extract the text instead.
Choosing pages
Type the pages you want, such as 1-3, 5, or 8- for page 8 to the end, and only those are drawn. This is also the quickest way to test a setting on a long document before converting all of it.
Sources
Frequently asked questions
- Which resolution should I choose?
- 72 dpi for a small preview, 150 dpi for reading on a screen, 300 dpi for printing or for reading small text. Higher resolutions give larger files.
- JPG or PNG?
- JPG for pages with photos, because it is smaller. PNG for text and line drawings, because the edges stay sharp. The format can be changed on the page.
- Is the text kept as text?
- No. A picture holds pixels, not text. To get the text, use the text mode of the PDF to image tool or the image to text tool.
- Is my PDF uploaded?
- No. The pages are drawn in your browser by PDF.js, and nothing leaves your device.
- Why is a page blank or odd?
- Rarely a PDF uses features the viewer does not support, such as some unusual fonts or encrypted content. The page then may be drawn incompletely, and checking the pictures before you use them is wise.
- What does dpi mean for a PDF?
- A PDF page has a size in points, 72 to the inch, and no pixels. The dpi chosen here sets how many pixels each inch becomes, so an A4 page of 8.27 × 11.69 inches is 1240 × 1754 pixels at 150 dpi and 2480 × 3508 at 300.
- What is the quality slider?
- It sets how much the JPG is compressed, and starts at 85. A higher value keeps text edges cleaner at the price of a larger file. It is not shown for PNG, which is lossless.
- Why was a page skipped as too large?
- A page whose picture would pass 50 million pixels is skipped, with a message, so that a phone does not run out of memory. That can happen to posters or large drawings at 300 dpi. Choose a lower resolution and convert again.
- How big can the PDF be?
- Up to 100 MB. A file with a password asks for it before the pages are drawn, and a wrong password is reported.
Related tools
Version history
- 1.0.2 — Adds how many pixels a page comes out at for each resolution, what dpi means for a PDF, what is lost when a page becomes a picture, the page size limit, and more examples and questions.
- 1.0.1 — Makes the search title and description state the supported task, key formats and privacy benefit more clearly.
- 1.0.0 — First release.