How to Convert PDF to JPG on Any Device (Free)
By Chinmoy Biswas · Updated , first published
There are good reasons to turn a PDF page into a picture: posting a flyer on Instagram, dropping a chart into a slide, uploading a certificate to a site that only accepts images, or sending a page to someone who struggles to open PDFs on their phone. The conversion itself takes seconds. The part that needs thought is the resolution, because too low looks blurry and too high creates files that upload forms reject. This guide covers the steps on every device, the numbers behind DPI, and the cases where a JPG is the wrong choice.
How do you convert a PDF to JPG for free?
Open the PDF in a converter that renders each page as an image, pick a resolution, and download the JPG files. PDF to JPG does this in the browser on any device, with no account and no watermark.
The tool draws pages with pdf.js, the same open-source renderer that displays PDFs in Firefox. Rendering happens inside the browser tab, so the PDF is not uploaded. That matters for certificates, ID scans and statements, which are exactly the documents people tend to convert.
- Open PDF to JPG and choose the PDF (up to 200 MB). A protected file asks for its password first.
- Pick 72, 150 or 300 DPI. 150 is the default and suits most uses.
- Set JPG quality. The slider runs from 50 to 100 and starts at 85.
- Convert all pages, or type a range such as 1-3, 8.
- Download. One page arrives as a single JPG. Several pages arrive in a ZIP, named with zero-padded page numbers so they sort correctly.
Which DPI should you choose?
Choose 150 DPI for anything viewed on a screen and 300 DPI for anything printed or cropped. 72 DPI is only for thumbnails and quick previews in a chat.
DPI here means how many pixels are created for each inch of the page. An A4 page is 8.27 by 11.69 inches and a US Letter page is 8.5 by 11 inches, so the pixel size follows directly from the setting. Doubling the DPI gives four times as many pixels, and roughly four times the file size.
When 300 DPI is worth the larger file
Pick 300 DPI when the image will be printed, when the page has small print that people will zoom into, or when only part of the page is needed. Cropping a quarter of a 300 DPI page still leaves about 1,240 pixels across, which stays sharp on a phone.
Browsers cap a single canvas at roughly 16 megapixels. An A4 page at 300 DPI is about 8.7 megapixels, so it fits. A poster or an architectural drawing does not, and the tool renders those pages at a reduced size rather than failing.
What the quality slider changes
Quality controls how hard the JPG is compressed, not how many pixels it has. Around 85 is hard to tell from the original at normal viewing size. Raise it to 90 or more for pages with small text. Drop to 70 when the smallest file matters more than crisp edges.
| DPI | Pixels (A4) | Typical size per page | Use it for |
|---|---|---|---|
| 72 | 595 × 842 | 50–150 KB | Thumbnails, chat previews |
| 150 | 1,240 × 1,754 | 200–600 KB | Screens, slides, websites, social posts |
| 300 | 2,480 × 3,508 | 0.8–2.5 MB | Printing, zooming into small print, cropping |
Should you use JPG or PNG?
Use JPG for pages with photos, scans or colored backgrounds, and PNG for pages that are mostly text, line drawings or logos. JPG files are much smaller. PNG files are exact.
JPEG compression is lossy. It works on 8 × 8 pixel blocks and discards fine detail the eye is unlikely to miss, which suits photographs well. Around sharp black text and thin lines the same method leaves faint grey smudges. PDF to PNG uses lossless compression, so every pixel is kept and flat colors stay clean. The cost is size: a PNG of a photo-heavy page can be five to ten times larger than the JPG.
| Page content | Better format | Reason |
|---|---|---|
| Brochure with photographs | JPG | Small files, no visible loss in photos |
| Scanned letter or receipt | JPG | Scans are already photographic |
| Text-only contract page | PNG | No smudging around letters |
| Chart, diagram or logo | PNG | Flat colors and thin lines stay exact |
| Upload portal with a 1 MB limit | JPG | Quality slider lets you hit the limit |
Built-in ways on Mac, Windows, iPhone and Android
Only the Mac has a real built-in export. The other systems offer screenshots, which work for a quick share and poorly for anything else.
Mac: Preview
Open the PDF in Preview, select a page in the thumbnail sidebar, and choose File > Export. Set Format to JPEG, adjust the quality slider and set Resolution, for example 150 pixels/inch. Preview exports only the current page. For a 20-page document that means 20 exports, so the browser tool is faster when more than two or three pages are needed.
Windows
Windows has no built-in PDF to image export. The usual workaround is the Snipping Tool (Windows+Shift+S) on a page zoomed to fill the screen. The result is limited to screen resolution, often under 1,000 pixels tall for a full page, and it includes any part of the viewer you select by accident. It is fine for a chat message and poor for print.
iPhone and iPad
A screenshot of an open PDF includes the status bar and captures the page at screen size. For clean full-page images, open PDF to JPG in Safari. The download lands in the Files app, in the Downloads folder. Tap the ZIP to expand it, open an image, then tap Share > Save Image to add it to Photos.
Android
Android has no system PDF exporter either. Open the tool in Chrome, convert, and find the files in the Downloads folder through the Files app. Most Android file managers open ZIP archives directly. If the gallery does not show the images at once, move them into the Pictures folder.
Why does the JPG look different from the PDF?
An exported image can differ slightly because every PDF renderer handles missing fonts and annotations in its own way. The page content is the same. The drawing of it is not always identical.
Different font or spacing
A PDF that does not embed its fonts relies on the viewer to substitute one. Acrobat, Preview and pdf.js each pick a different substitute, so letter shapes and line breaks can shift. If exact appearance matters, ask the author for a PDF with embedded fonts, which is the default in most export dialogs.
Missing form answers or comments
Filled form fields and comments are annotations that sit on top of the page. If typed answers are missing from the images, run the file through Flatten PDF first. Flattening draws the answers into the page itself, and the export then includes them.
White background and blurry text
Pages are drawn on a white background, as they look when printed, because JPG has no transparency. Blurry text almost always means the DPI was too low for the way the image is being viewed. Export again at 300 DPI or switch to PNG.
When a JPG is the wrong choice
Converting to an image flattens everything. Text in the JPG cannot be selected, searched or read by a screen reader, links stop working, and the image cannot be turned back into a sharp PDF later. Keep the original PDF in every case.
- Need the text, not a picture: use PDF to Text or PDF to Word. PDF to Word reads the text layer and does not run OCR, so scans need OCR first.
- Need a smaller PDF for email: Compress PDF keeps the file a PDF and keeps text selectable.
- Need only some pages as a document: Split PDF extracts them without converting.
- Need to hide part of a page: an image crop is fine, but for a PDF use Redact PDF.
Practical tips
- Instagram: a portrait post is 4:5, which is 1,080 × 1,350 pixels. An A4 page is taller than that, so export at 150 DPI and crop to 4:5 in the Photos app.
- Wide margins waste pixels. Run Crop PDF first and the content fills more of the image.
- Sideways pages produce sideways images. Fix them with Rotate PDF before converting.
- On a phone, convert long documents in ranges of 50 to 100 pages. A ZIP of 300 DPI images can reach hundreds of megabytes.
- To go the other way later, JPG to PDF combines images into one document.
FAQ
Questions people also ask
How do I convert a PDF to JPG without losing quality?
Export at 300 DPI with JPG quality at 90 or higher. That gives about 2,480 × 3,508 pixels for an A4 page, which is print quality. For pages that are mostly text or line art, PNG avoids JPG compression marks entirely.
Can I convert only one page of a PDF to JPG?
Yes. Choose the page option in PDF to JPG and type the page number, such as 4. A single page downloads as one JPG file instead of a ZIP. In Preview on a Mac, select the page in the sidebar before exporting.
Is it safe to convert a PDF to JPG online?
It depends on the tool. Many converters upload the file to a server. PDF to JPG on this site renders pages inside the browser with pdf.js, so the document and its password never leave the device. Check any other tool's privacy page first.
Does converting a PDF to JPG extract the images inside it?
No. The conversion takes a picture of each whole page, including text, graphics and photos together. It does not pull out the original embedded photos as separate files. For sharing a page or making a thumbnail, a full-page image is what is needed.
Free tool
Try PDF to JPG
Save PDF pages as JPG images for slides, social posts, websites or messaging apps. Pages are rendered on your device at 72, 150 or 300 DPI with a quality setting from 50 to 100. Runs in your browser, so the file never leaves your device.
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