How to extract pages from a PDF as images
To pull pages out of a PDF as images, render them rather than screenshot them: open the PDF, tick the pages you need, choose JPG or PNG, choose 150 or 300 DPI, and export - as individual images or one ZIP. The page picker is what keeps this from becoming a forty-page job to get page twelve.
The short answer
Open the PDF in something that can render pages as images, tick the pages you want, choose a format and a resolution, and export. On an iPhone the page picker is the part that matters: it is the difference between converting one page and converting forty to find one.
Extracting pages vs. splitting a PDF
These get confused constantly, and they produce different files:
- Extracting pages as images gives you JPG or PNG files. They can be dropped into a slide, posted, messaged or edited like any photo - but the text is no longer text, so nothing can search or select it.
- Splitting a PDF gives you smaller PDFs. The text stays selectable and searchable, and the pages stay print-quality at any zoom.
Ask what happens to the page next. Going into a presentation, a chat, a listing or an image editor - extract as images. Being forwarded, printed or filed as a document - split instead, and keep it a PDF.
Step by step
Using JPG To PDF Converter PRO:
- Tap PDF to JPG and choose the PDF from Files, iCloud Drive or wherever it lives.
- Every page appears as a numbered thumbnail. Tap the ones you want, or Select All for the whole document.
- Pick the format: JPG for photographic pages, PNG for text, diagrams and anything with sharp edges.
- Pick the resolution: 150 DPI for screens, 300 DPI for print or close inspection.
- Save the images to Photos, share them individually, or export the set as a ZIP.
Picking the right pages
Thumbnails are small, and page 12 of a report looks a lot like page 13 at thumbnail size. Two habits save re-doing it:
- Find the page numbers first. Open the PDF in Files or Books, note the page numbers you need, then come back to the picker. The thumbnails are numbered, so matching them is quick.
- Remember cover pages shift the count. The page printed "1" is often the document's second or third page. Trust the thumbnail, not the printed number.
Choosing DPI without guessing
DPI decides the pixel dimensions of the rendered page. An A4 page at 150 DPI is around 1240 × 1754 pixels; at 300 DPI, about 2480 × 3508 - four times the pixels and roughly four times the file size.
- Messaging, e-mail, web — 150 DPI. Sharp on any screen.
- Slides — 150 DPI is usually enough; 300 if the slide will be projected and the page has small text.
- Printing — 300 DPI. Below that, print looks soft.
- Cropping afterwards — 300 DPI, so the crop still has pixels to work with.
- Archiving — 300 DPI; you cannot add detail back later.
Exporting a lot of pages at once
Past about five images, individual files become the problem. A ZIP keeps the whole set together in page order as one attachment - one thing to send, one thing to receive, nothing lost between message two and message nine. Every desktop operating system opens ZIPs natively, and iOS does too: tap it in Files and it unpacks into a folder.
Tips
- Test one page first. Convert a single page, look at it, then do the rest with the settings confirmed.
- Name the ZIP for the document, not the app. The person receiving it has no idea what export_4.zip contains.
- PNG for anything with a chart on it. JPG compression clusters artefacts around thin lines, which is what axes and gridlines are.
- Saving to Photos makes pages searchable. iOS reads text inside images, so you can find a saved page later by searching a word printed on it.
- Keep the original PDF. Images are a derivative; you may need the searchable document again.
Common mistakes
- Converting the whole document to get one page. Use the picker.
- Extracting as images when the text needed to stay selectable. Images cannot be searched, copied from, or read aloud by a screen reader. If any of those matter, keep it a PDF.
- Screenshotting instead of rendering. A screenshot is your screen at screen resolution, complete with the surrounding interface.
- Using 300 DPI for everything. Four times the file size for no visible gain on a phone screen.
- Sending thirty loose images. Export the ZIP; the order survives the trip.