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How to Combine Images into One PDF for Free

· 6 min read

Quick summary: To combine images into one PDF for free on Mac, select all the image files in Finder, right-click → Quick Actions → Create PDF — this merges them in the order shown into a single multi-page PDF. On Windows, select the images, right-click → Print → choose “Microsoft Print to PDF” as the printer, which combines them into one file. On iPhone, use the Photos app’s Print → pinch-out trick to combine selected photos.

Combining multiple images into a single PDF is useful for submitting scanned documents, compiling a photo set for review, or creating a simple portfolio — one file instead of dozens of separate images. Every method below is free and works without installing paid software. You can also upload the resulting PDF to our free AI PDF reader to read or summarize it afterward.

How to combine images into one PDF on Mac (Finder Quick Action)

The fastest method on macOS uses a built-in Quick Action — no app needs to open:

  1. Open Finder and navigate to the folder with your images.
  2. Rename the files with a number prefix (01, 02, 03…) if the order matters — Finder combines them in the order they’re sorted.
  3. Select all the images you want to combine (Cmd+click each one, or Cmd+A for all).
  4. Right-click the selection → Quick Actions → Create PDF.
  5. A single PDF appears in the same folder, one image per page, in the order selected.

Combine images with Preview

  1. Open the first image in Preview.
  2. Go to View → Thumbnails to show the sidebar.
  3. Drag the remaining images from Finder directly into the thumbnail sidebar — each one becomes a new page.
  4. Reorder pages by dragging thumbnails up or down.
  5. Go to File → Export as PDF to save the combined file.

How to combine images into one PDF on Windows

Using Print to PDF (built-in, no install)

  1. Select all the image files in File Explorer (Ctrl+click each, or Ctrl+A for all).
  2. Right-click the selection → Print.
  3. In the Windows Photo Viewer print dialog, choose your layout, then set the Printer to “Microsoft Print to PDF”.
  4. Click Print, choose a save location, and the images combine into one PDF in the order they appear in the print queue.

To control the order: Select images one at a time in the desired sequence (Ctrl+click in order) before right-clicking Print — File Explorer preserves selection order in most versions.

Using Word or PowerPoint

  1. Open Word or PowerPoint.
  2. Insert each image on its own page/slide: Insert → Pictures.
  3. Go to File → Save As (or Export) → choose PDF.

This method gives more control over image sizing and page layout than the direct print method.

How to combine images into one PDF online (free, no install)

  1. Search for a free “combine images to PDF” or “JPG to PDF” online tool.
  2. Upload all the images at once.
  3. Drag to reorder them if needed.
  4. Click Combine or Convert → download the merged PDF.

Privacy note: Online tools upload your images to a remote server. For personal photos or sensitive documents, use the Preview or Print to PDF method locally instead.

How to combine images into one PDF on iPhone

Using the Photos app

  1. Open Photos and select the images (tap Select, then tap each photo in the order you want).
  2. Tap the Share button.
  3. Tap Print.
  4. On the print preview screen, pinch outward with two fingers on the page thumbnail — this converts the print job into a PDF.
  5. A new Share sheet appears — tap “Save to Files”.

This combines the selected photos into a single multi-page PDF, one photo per page, in selection order.

Using the Files app

  1. Open Files and navigate to a folder with your saved images.
  2. Select multiple images (tap Select, then tap each file).
  3. Tap the Share icon → Print.
  4. Pinch outward on the preview to create a PDF, then Share → Save to Files.

How to combine images into one PDF on Android

  1. Open Google Drive and upload your images (or use images already saved on the device).
  2. Select the images you want to combine (long-press one, then tap others).
  3. Tap the three-dot menu → look for a print or PDF-export option, or use a free PDF-maker app from the Play Store designed specifically for image-to-PDF conversion — Google Drive’s built-in print flow doesn’t reliably combine multiple images into one PDF on Android the way it does on iOS.

For a single image, see how to convert a picture to PDF on iPhone for free for the equivalent single-image workflow (the iPhone steps transfer conceptually to Android’s Share → Print flow).

How to control image order and page size

  • Order: Most methods combine images in the order they’re selected or sorted — rename files with numeric prefixes (01-cover.jpg, 02-page.jpg) for predictable ordering.
  • Page size: Print-based methods (Mac, Windows, iPhone) fit each image to the printer’s default page size (usually Letter or A4), which may add white borders around non-matching aspect ratios. For exact image dimensions with no borders, use Preview’s drag-into-sidebar method or a dedicated online tool that offers a “fit to image size” option.

Frequently Asked Questions (FAQ)

Can I combine images and an existing PDF into one file?

Yes — in Preview on Mac, open the existing PDF, show the thumbnail sidebar (View → Thumbnails), then drag image files directly into the sidebar at the position you want. They insert as new pages alongside the original PDF content.

Why are my combined images rotated wrong in the PDF?

This usually happens when the original photos have EXIF orientation data that the combining tool doesn’t read correctly. Rotate the images to their correct orientation first (in Preview: select the image, Tools → Rotate) before combining, or fix the rotation afterward — see how to rotate a PDF for free.

How many images can I combine into one PDF?

There’s no hard software limit for most free methods — you can combine dozens or even hundreds of images. The resulting file size grows with each image, though, so very large batches of high-resolution photos may produce a large PDF. See how to compress a PDF for free if the result is too big to share.

Does combining images into a PDF reduce their quality?

Generally no — images are embedded at their original resolution unless the method you use applies compression (some online tools do, to keep file sizes manageable). Preview’s Quick Action and drag-into-sidebar methods preserve full image quality.

Can I combine images into a searchable PDF?

No — combining images creates an image-only PDF with no text layer, even if the images contain visible text (like scanned pages). To make it searchable, run OCR afterward — see how to OCR a PDF for free.

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