How to combine multiple images into one PDF: name the files in page order (01, 02, 03), select them all, then print to PDF. Windows uses Microsoft Print to PDF, Mac uses Preview, iPhone uses Files > Create PDF. For bigger sets or several photos per page, use a converter with drag-to-reorder, like our free one (up to 60 images).
Turning one picture into a PDF is easy. Turning thirty into a single, tidy, emailable PDF is where people get stuck: pages come out in the wrong order, some are cropped, landscape photos sit sideways, and the file ends up 50 MB. This guide covers the three decisions that make a multi-image PDF look right (order, page size and compression), the built-in method on each device, and how to do it in our free image to PDF converter, which runs in your browser and never uploads your photos.
- Order: rename files with leading numbers (01, 02 … 10), or use a tool with drag-to-reorder. Most built-in methods sort by file name or tap order.
- Page size: A4 or Letter if it will be printed; fit-to-image if it's for screens only.
- Layout: 1 photo per page for portfolios, 4 for line sheets and catalogs, 6 for contact sheets.
- File size: about 100 dpi keeps a 30-photo PDF small enough to email; 200 to 300 dpi for print.
- Built in: Windows Print to PDF, Mac Preview, iPhone Files and Photos all combine images for free.
How do I put the images in the right order?
Number the file names before you start, with a leading zero: 01, 02 … 09, 10. Most tools sort by name, and without the zero, “10” sorts before “2”.
- Windows: select the files in File Explorer, press F2 and type a name such as “catalog”. Windows renames them catalog (1), catalog (2) and so on, in the order shown.
- Mac: select the files in Finder, right-click and choose Rename, then use Format with an index number.
- iPhone: the Photos Print method uses the order you tap the photos; the Files app uses file order.
- Easiest: use a tool that shows thumbnails you can drag, so you can check the order visually before saving.
Decide the order by how the reader will use the PDF. A product catalog usually runs by category, then best-sellers first. A receipt bundle runs by date. A portfolio opens with your strongest image and ends with your second strongest.
What page size should a combined PDF use?
Use A4 (outside North America) or Letter (US and Canada) if anyone might print it. Use pages shaped like each image if it will only ever be viewed on a screen.
| Page option | Size | Use it for | Watch out for |
|---|---|---|---|
| A4 | 210×297 mm (8.3×11.7 in) | Print anywhere outside the US and Canada | White space around non-matching photos |
| Letter | 8.5×11 in (216×279 mm) | US and Canada printing, US buyers | Same as A4 |
| Fit to image | Each page matches its photo | Portfolios and lookbooks viewed on screen | Pages vary in shape; prints oddly |
| Landscape A4 or Letter | Rotated page | Wide photos, banners, 2-up spreads | Portrait photos shrink |
Mixing portrait and landscape photos is fine when the tool fits each photo inside its space without cropping. Watch for options like Windows' “Fit picture to frame”, which fills the page by cutting off edges. If a photo has a lot of empty space, crop it first with our free image cropper so the subject fills the page.
How many images should go on each page?
One per page for anything people look at closely; four per page for catalogs and line sheets where people compare items.
| Photos per page | Good for | Notes |
|---|---|---|
| 1 | Portfolios, lookbooks, product detail pages, receipts | Largest images; most pages |
| 2 | Before/after pairs, front and back views | Works well on landscape pages |
| 4 | Product catalogs, line sheets, order sheets | Add captions with product names or SKUs |
| 6 | Contact sheets, inventory records, proofs | Images get small; keep for reference documents |
How do I keep a multi-image PDF small?
Reduce the image resolution when you make the PDF. Around 100 dpi is plenty for reading on a screen and keeps a 20- to 30-photo PDF to a size most email services accept.
Phone photos are huge: a 12-megapixel photo is about 4000×3000 pixels, far more than a quarter of an A4 page needs. Built-in print-to-PDF methods usually keep every pixel, so thirty phone photos can produce a file of 60 MB or more. Many email services cap attachments at roughly 20 to 25 MB.
- Pick a lower quality or dpi setting in the converter (our tool's Small file option uses 100 dpi and saves photos as JPG).
- Or compress the photos first with our free image compressor, then combine them.
- Use 200 dpi for office printing and 300 dpi for professional print.
- Check the file size before sending. If it's still too large, split the set into two PDFs.
For more on what compression does to quality, see how to reduce image file size.
How to combine multiple images into one PDF on each device
Every major system can do it without new software. The steps differ only in where the option sits.
Windows 10 and 11
- Put the images in one folder and number them in order.
- Select them all, right-click and choose Print (on Windows 11, click Show more options first if Print isn't listed).
- Set the printer to Microsoft Print to PDF, choose a paper size and a layout (full page, or several per page).
- Untick Fit picture to frame so images aren't cropped, then click Print and save.
Mac
- Select the images in Finder and open them together in Preview.
- In the thumbnail sidebar, drag them into order, then select them all.
- Choose File > Print, open the PDF menu and pick Save as PDF.
Or select the images in Finder, right-click and choose Quick Actions > Create PDF.
iPhone and iPad
- In Photos, tap Select and tap the photos in page order.
- Tap Share > Print, then tap the Share button at the top and choose Save to Files.
- Or, in the Files app, select the images and choose Create PDF from the More (…) menu.
Our step-by-step guides cover each in more detail: how to convert an image to PDF on Windows, Mac and Chrome, and how to convert JPG to PDF on iPhone.
Android
Open a photo in your gallery or Google Photos, choose Print from the menu, and set the printer to Save as PDF. Whether several selected photos land in one PDF depends on your phone and app version; some Samsung and other phones support it, others save one photo per PDF. If yours doesn't, use a browser converter.
How to combine images with our free tool
Our image to PDF converter works on any phone or computer with a browser. It builds the PDF on your device, with no sign-up, no credits and no watermark.
- Drop in up to 60 photos: JPG, PNG, WebP or iPhone HEIC.
- Drag the thumbnails or use the arrow buttons to set the order.
- Pick A4, Letter or fit-to-photo pages, with portrait, landscape or auto orientation.
- Choose 1, 2, 4 or 6 photos per page and set a margin.
- Turn on captions to print each file name (without the extension) under its photo.
- Pick Small file (100 dpi) or High (200 dpi), name the PDF and download it.
With one photo per page and auto orientation, wide photos get landscape pages. In a grid, each photo is fitted inside its space without cropping. Captions use a standard PDF font, so letters outside Western European alphabets are left out.
What can you use a combined image PDF for?
Anything that would otherwise be a pile of attachments. Three common ones for small sellers:
Product catalogs and line sheets
Four products per page with names or SKUs as captions makes a quick line sheet for shop buyers or wholesale inquiries. The photos need to match: same background, same framing, similar lighting. Otherwise the page looks like a collage. Our guide on how to make a product catalog covers pricing pages and layout.
Put every product on the same clean white or brand-color background before you build the catalog, with the product itself kept exactly as you shot it.
Match my catalog photos7 days free · 50 credits · No credit cardReceipts and expense records
One receipt per page, ordered by date, with file names like 2026-10-03-supplier. Photograph receipts flat in good light, and crop to the paper edge so the text fills the page. Check with your accountant or tax authority whether photographed receipts are accepted for your records.
Portfolios
One image per page, fit-to-image pages if it's screen-only, and High quality. Put your strongest work first. Keep a portfolio PDF to 10 to 20 images; reviewers rarely go further.
Open the PDF and flip through every page. Check the order, look for cropped edges or sideways photos, and confirm the file size. It takes thirty seconds and saves a resend.
Frequently asked questions
How do I combine multiple JPGs into one PDF?
Number the JPGs in order, select them all and print to PDF: Microsoft Print to PDF on Windows, Preview on a Mac, or Files > Create PDF on iPhone. A browser converter with drag-to-reorder is easier for large sets.
How do I combine images into one PDF for free?
Every major system has a free built-in method: Windows' Microsoft Print to PDF, Mac Preview, and the iPhone Files app. Free browser converters, such as ours, work on any device and let you set page size and photos per page.
How do I change the order of images in a PDF?
Set the order before you combine them, by numbering file names (01, 02, 03) or dragging thumbnails in a converter. To rearrange an existing PDF, use the page thumbnails in Mac Preview or a PDF editor.
Why is my combined PDF so large?
Phone photos are several megabytes each, and most print-to-PDF methods keep every pixel. Choose a lower quality setting, around 100 dpi, or compress the photos before combining them.
Can I put multiple pictures on one PDF page?
Yes. Windows' Print Pictures window has multi-photo layouts, and converters like ours offer 2, 4 or 6 photos per page. Four per page works well for catalogs and line sheets.
How many images can I combine into one PDF?
There's no fixed limit in most built-in methods, but very large sets get slow and produce big files. Our free converter takes up to 60 photos per PDF; split bigger sets into several files.
Give every product photo a matching clean background and framing, then combine them into a PDF with our free converter.
Start free trialSee pricing7 days free · 50 credits · No credit card. Trial images carry a small “Made with aiarter” mark; paid plans export clean files you can use commercially.
