How to Save PDF Pages as JPG Images (and Pick the Right Resolution)
By the UtilityNest team · · 5 min read
Your café's new autumn menu exists only as a PDF from the designer. You want to post page one on Instagram, put the drinks page in the window display, and send the whole thing to the staff group chat, where nobody ever opens PDFs. What you need is pictures.
Converting PDF pages to images is easy. The part people get wrong is the resolution: too low and the text goes fuzzy, too high and you end up with 8 MB images that are slow to send. A minute of thought about where the image is going fixes both.
The short version: open PDF to JPG, choose 150 DPI for screens or 300 DPI for printing, type the pages you want, click Convert. Download single images or all of them as a ZIP.
Step by step
- Open PDF to JPG and add your PDF.
- Choose JPG or PNG (more on that below) and a resolution: 72, 150, 200 or 300 DPI.
- Optionally type which pages you want, like
1or1-3, 7, and set the JPG quality. - Click Convert. Each image shows its size underneath; download them one by one or all together as a ZIP.
The pages are rendered by your browser and never uploaded. Images are named with zero-padded page numbers, like menu-page-01.jpg, so they sort correctly in any folder. On a long document you can stop the conversion at any point and keep the pages already done.
What DPI actually means in pixels
DPI tells the tool how many pixels to create per inch of paper. Here is what that gives you for the two most common page sizes:
| DPI | A4 page | US Letter page | Good for |
|---|---|---|---|
| 72 | 595 x 842 px | 612 x 792 px | Quick previews, thumbnails |
| 150 | 1240 x 1754 px | 1275 x 1650 px | Screens, slides, social posts, chat |
| 200 | 1654 x 2339 px | 1700 x 2200 px | Zooming in on detail |
| 300 | 2480 x 3508 px | 2550 x 3300 px | Printing |
A worked example: the café menu
A 4-page A4 menu PDF, 2.1 MB.
- Instagram post (page 1): 150 DPI, JPG. You get a 1240 x 1754 image, a few hundred KB, and the text is sharp on a phone. Instagram's portrait format is 1080 x 1350, so crop it to 4:5 afterwards in Crop Image using the Instagram portrait preset.
- Window poster (page 3): 300 DPI, PNG. A 2480 x 3508 image that prints crisply on A4.
- Staff group chat (all pages): 150 DPI, JPG, pages
1-4, download as a ZIP or share the four images directly.
Small files, but the prices on the menu are a blur when someone zooms in, and the poster prints soft.
150 DPI for screens, 300 DPI for print: readable on phones, crisp on paper, no oversized files.
If you are not sure, pick 150 DPI. It is sharp on almost every screen and keeps files small enough for chat apps. Only go to 300 when the image is going to a printer.
JPG or PNG?
- JPG gives much smaller files and is best for pages full of photos, like a menu with food pictures or a brochure.
- PNG is lossless and keeps text and line art perfectly crisp. Choose it for text-heavy pages, diagrams, charts and screenshots-to-be.
Need a transparent background, for example to place a signature or a logo from a PDF onto another design? Use PDF to PNG and switch on Transparent background; areas of the page with nothing drawn on them become transparent. That tool also lets you click page thumbnails to choose pages instead of typing.
Making the images smaller afterwards
A 300 DPI JPG of a photo-heavy page can be a few megabytes. If you need it smaller for email or an upload form, run it through Compress Image, which keeps the dimensions but trims the file size, usually by half or more on the Balanced level.
Other ways to do it
Mac
Open the PDF in Preview, go to the page, choose File > Export, pick JPEG or PNG and set the resolution. Preview exports one page at a time.
Windows
There is no built-in exporter. The Snipping Tool (Windows + Shift + S) can capture what is on screen, but the result is only as sharp as your screen's zoom level, so it is fine for a quick share and poor for printing.
Phones
A screenshot of the open PDF works in a pinch. For a clean, full-page image at a known resolution, the browser tool works in Safari and Chrome on iPhone and Android.
Common mistakes
- Converting everything at 300 DPI "just in case". A 40-page document at 300 DPI can easily be 100 MB of images. Use 150 unless you are printing.
- Using JPG for a spreadsheet or diagram. Thin lines and small numbers get soft edges. PNG keeps them crisp.
- Converting when you only need the text. If you want to copy words out of the PDF, PDF to Text is faster and gives you editable text instead of a picture of it.
- Forgetting the crop. Social platforms prefer specific shapes. Crop after converting, not before.
Quick answers
Can I convert just one page?
Yes. Type the page number in the Pages box, for example 4.
Does it work with password-protected PDFs?
Yes, if you know the password. You are asked for it when the file opens, and it is only used in your browser.
What about a giant poster-sized page?
Very large pages are scaled to stay within the browser's canvas limit, and you are told when that happens.