How to Scan Multiple Pages Into One PDF on iPhone

To scan multiple pages into one PDF on iPhone, you keep scanning in a single session and only finish after the last page. That part takes a minute. The harder parts come after: a page out of order, a page you missed, two scans that should be one file, and a 30-page PDF that’s too big to email.

This guide covers each of those on iOS 17 and later. If you’ve never used the built-in scanner, start with the basics in iPhone scanner to PDF, then come back here.

Scan multiple pages into one PDF in a single session

Every scanner on the iPhone (in Files, Notes and, from iOS 26, Preview) puts all the pages from one session into one PDF. A session starts when you tap Scan Documents and ends when you tap Done, or Save on iOS 17 and 18.

Between those two taps you can capture as many pages as you like: with Auto on, the iPhone captures a page as soon as it finds the page boundaries, so you just turn to the next sheet and wait for the next capture. If a page comes out skewed, tap its thumbnail to adjust or retake it before you move on.

When you tap Done, Files asks where to save and writes a single PDF there, while Notes attaches the PDF to the open note and Preview combines the pages into one file you can edit. The mistake that splits a document into pieces is tapping Done after each page, which starts a new PDF every time.

The short version of the steps:

1. In Files, open the destination folder, tap More (three dots), then Scan Documents. In Notes, tap the Attachments button (paperclip) in a note, or Camera on iOS 17, then Scan Documents. In Preview (iOS 26 and later), tap Scan Documents on the start screen.
2. Capture page 1.
3. Turn the page, capture again. Repeat.
4. After the last page, tap Done (Save on iOS 17 and 18). In Files, choose a location and tap Save.

Batch capture without losing your place

The camera is fast. What slows a 20-page scan down is shuffling paper, losing track of which page you’re on, and redoing blurry shots. Set up before you start:

• Put the unscanned stack on one side and the scanned pile on the other, face down, so the finished pile stays in order.
• Use a dark, matte surface and daylight. A consistent background helps the camera find each page fast.
• Leave Auto on. Manual shutter makes sense for a single tricky page, but on a batch it doubles the taps.
• For double-sided sheets, scan the back straight after the front. Doing all the fronts first means reordering every other page later.
• Glance at the thumbnail after each capture. Retaking page 7 now beats finding it blurred after page 30.

Staples and binder clips are worth removing first. A clipped corner lifts the page, and the scanner can read the curve as the page edge.

How to reorder pages in a scanned PDF on iPhone

On iOS 26 and later, Preview can move pages around:

1. Open Preview and open the PDF. A scan from Files can be opened through Preview’s Browse tab.
2. Tap the page count to show the thumbnails. If it isn’t showing, tap the page (on iOS 26, pinch the page instead).
3. Touch and hold a thumbnail until the menu appears, then drag it above or below another page.
4. Tap the Back button to save and return to the file list.

Apple’s guide for Notes doesn’t list a reorder option. Its page menu covers rotating, cropping, changing the filter and inserting a blank page. On iOS 17 and 18, where Preview isn’t on the iPhone, the quickest fix for a short document is to rescan it in the right order.

For a long document on an older iOS version, there’s a browser route. Split the PDF into single pages with the free split tool, then join them back in the order you want with the merge tool, which lets you move files up and down before merging. Both run in your browser and don’t upload anything.

Add a page you missed

This happens to everyone: the signature page was on the printer, or page 4 stuck to page 3. On iOS 26 and later, Preview can scan straight into an existing PDF:

1. Open the PDF in Preview and tap the page count to show the thumbnails.
2. Touch and hold the thumbnail of the page that should come before the missing one.
3. Tap Scan Pages, scan the missing page, then tap Done.
4. If the new page landed in the wrong spot, drag its thumbnail into place.

The same menu has Insert from File, which adds a PDF or image you already have, and Delete Page for a duplicate shot. For Notes, Apple’s guide only lists Insert Blank Page, so scan the missing page on its own and combine the two files.

Combine two scans into one PDF

Two separate scans of the same document are easy to join, and the method depends on your iOS version.

On iOS 26 and later, with Preview: open the first PDF, show the thumbnails, touch and hold the last page, tap Insert from File and pick the second PDF. Check the order, then go back to save.

In the Files app: tap More, then Select, tap both PDFs, then tap the More button at the bottom and look for Create PDF. Check the page order in the new file before you send it, because it won’t necessarily follow the order you have in mind.

In a browser: the merge PDF tool on this site takes up to 5 PDFs (50 MB in total), lets you set their order, and makes one file. It can’t open password-protected PDFs.

Notes is the odd one out. If you scan twice into the same note, you get 2 PDFs sitting in one note, and each is shared as its own file.

Keep the file size sane

A long scan in full color can easily outgrow an upload form, and some email services cap attachments at 25 MB. The cheapest fix happens before you scan: pick grayscale or black and white for plain text pages. They come out much smaller than color, and the text stays sharp.

If the PDF is already too big, here are your options:

• Preview on iOS 26: open the PDF, tap the Actions menu next to the file name, tap Export, choose PDF and drag the slider toward a smaller size.
• Preview on iOS 27: the same Export screen has switches for Optimize Images for Screen and Save Images as JPEG, which both make a smaller file. Embed Text runs OCR and makes the PDF searchable.
• The free compress PDF tool: 3 levels (Strong, Balanced, Light) with a before-and-after size, up to 25 MB or 50 pages. It re-renders each page as an image, so text in the output can’t be selected.
• Split it: send pages 1 to 15 and 16 to 30 as two attachments.

The Files app’s Compress option makes a ZIP file. It rarely shrinks a scan by much, because the page images inside a PDF are already compressed, and some upload forms won’t accept a ZIP anyway.

Check the finished PDF before you send it

A multi-page scan has more places to go wrong than a single page, and the person on the other end rarely tells you page 9 is upside down. Swipe through the whole PDF once before it leaves your phone.

• Count the pages against the paper stack. A missing page is easier to fix now than after a reply asking for it.
• Look for sideways or upside-down pages. In Preview, tap More, then Rotate Left or Rotate Right. In Notes, a page’s More menu has the same options.
• Zoom into the smallest print on the worst page, usually the one with a fold or a shadow across it.
• Check the size against the upload limit. In Preview, tap the Info button to see it.

If a page fails, fix it with the steps above: scan a fresh copy with Scan Pages, drag it into place, then remove the bad one with Delete Page.

Scanning long documents with an app

If you scan a 40-page contract or a month of receipts at a time, the built-in tools work but the cleanup adds up. The same job in a scanner app built for it goes like this:

1. Open Scanpaper and start a new scan.
2. Hold the phone over page 1. The outline is drawn live and the page is captured as soon as it holds still.
3. Turn pages and let it keep capturing. Retake any page that came out blurred.
4. Open the pages grid to drag pages into order, delete a duplicate, or add pages you missed.
5. To join a second scan, select both documents in the list and merge them. To pull some pages out, split them into a new document.
6. Export one PDF and share it, print it, or save it to Files.

Merge, split, reorder and add pages are all in the free tier, which allows unlimited pages per document and up to 3 documents, with a small “Scanned with Scanpaper” line on exported PDFs. Pro adds Medium and Small (“email friendly”) compression on export, OCR so the PDF is searchable, and passwords. Scans stay on the phone, with no account and no cloud.