PWPrivatePDFConvertPro

2026-05-08 · 7 min read

How to Combine Multiple Images Into a Single PDF

At some point a bank, landlord, university, or government portal will ask for a single PDF and you’ll be holding twelve photos of receipts, three pages of a passport, or a stack of ID cards you’ve taken with your phone. Combining images into one PDF is a one-minute job on every modern operating system. Below are five methods that don’t require Adobe, plus tips on order, orientation, size, and adding searchable text after the fact.

Before you start: prep your images

Two minutes of cleanup beats an hour of re-doing a submission. Quick checklist:

Method 1 — macOS Preview (no installs)

Probably the fastest method on any platform. In Finder, select all the images, right-click → Open With → Preview. In Preview’s sidebar, drag the thumbnails into the order you want, then File → Export as PDF. Pages appear in sidebar order.

For finer control, use the menu File → Print, choose “Save as PDF” from the PDF dropdown in the bottom-left of the print dialog. This route gives you paper-size and margin options.

Method 2 — Windows: Photos app or Print to PDF

Windows 10 and 11 both have native “Print to PDF”. Steps:

  1. In File Explorer, select all the images in the order you want them (Ctrl-click, in sequence).
  2. Right-click any selected image → Print.
  3. In the printer dropdown choose “Microsoft Print to PDF”.
  4. Pick paper size, layout (full page), and click Print. Save.

The result is one PDF with each image on its own page, in selection order. For more control over margins and trimming, Microsoft’s free PowerToys utility includes a richer image-to-PDF tool.

Method 3 — iPhone (Files app, share sheet)

iOS makes this almost embarrassingly easy:

  1. Save your photos to the Files app — pick a folder, paste them there.
  2. Long-press to multi-select all the images you want.
  3. Tap the share button (square with up arrow) → Print.
  4. On the print preview, pinch outward on the thumbnail. The preview opens as a PDF.
  5. Tap share again → Save to Files / Mail / wherever.

For documents you haven’t photographed yet, skip the round-trip and use the Notes app’s built-in document scanner (camera icon → Scan Documents). It auto-crops, deskews, and outputs a single multi-page PDF directly.

Method 4 — Android (Google Drive or Files)

Android’s native path is via Google Drive (which most Androids ship with):

  1. Open Drive, tap the + button → Scan.
  2. Take a photo of each page. Drive auto-crops and runs a basic deskew.
  3. Tap + to add more pages, reorder, retake if needed.
  4. Save. Drive stores it as a single PDF.

For images already in your gallery, third-party apps from the Play Store work, but Google Photos itself can also do it: select images, Print, “Save as PDF”. Choose tools that work offline if the images are sensitive — many Play Store “PDF maker” apps upload your photos.

Method 5 — Command line (ImageMagick, img2pdf)

For bulk jobs or scripted pipelines, the command-line tools are faster and more controllable than any GUI. Two good options.

img2pdf is purpose-built and lossless — it embeds JPGs directly without re-encoding (preserving quality and minimising size):

img2pdf 01.jpg 02.jpg 03.jpg -o output.pdf

ImageMagick is more flexible but re-encodes:

magick *.jpg -auto-orient -compress jpeg -quality 85 output.pdf

Use img2pdf when source quality matters (passport scans, contracts, anything for an official submission). Use ImageMagick when you want to compress or rotate in the same step.

Worked example: passport application photos

You’ve photographed your passport bio page, your driver’s licence (front and back), and a utility bill. The portal wants “a single PDF, max 5 MB, pages in this order: passport, licence front, licence back, utility bill”.

  1. Rename files 01_passport.jpg, 02_licence_front.jpg, etc.
  2. Crop and rotate each in Preview (Mac), Photos (Windows), or your phone’s photo editor.
  3. Combine using your platform’s native method above.
  4. Check file size. If over 5 MB, see our PDF compression guide.
  5. Open the PDF and check pages are right-way-up and in order.
  6. Submit.

Adding pages to an existing PDF

A related task: you already have a PDF, and you want to add a new scanned page or photo. Two paths:

For more on combining PDFs (and the gotchas around bookmarks, form fields, and signatures), our merge PDFs guide walks through five methods.

Make the PDF searchable (optional but useful)

A PDF made from photos has no text layer — you can’t select or search any text in it, and downstream systems can’t parse it. If the PDF will be archived or filed, run OCR over it to add a searchable text layer. Our OCR guide walks through Tesseract (free) and ABBYY (paid).

File size: keeping the PDF small

Three levers control image-to-PDF file size:

  1. Resolution. A 12-megapixel iPhone photo is overkill for most documents. Resize to 1500–2000px on the long side; it’ll still print readably.
  2. JPG quality. Most tools default to 90% or 95% quality. 80% is visually identical for documents and 30% smaller.
  3. Embedding without re-encoding. img2pdf and high-quality combiners can embed source JPGs directly without re-compressing. This is the lossless route.

Hit a file-size limit on a portal? Combine the images into a PDF first, then run our in-browser PDF compressor — the typical scanned-document PDF shrinks 60–90% with no visible quality loss.

Common mistakes

For multi-page workflows where you start adding scans, signatures, and edits, our PDF merger is the next stop. And if you end up with a PDF that’s heavier than the recipient will accept, the merging guide also covers preserving order and bookmarks across combined files.