How to Combine JPG or PNG Images Into One PDF

To turn a batch of JPG or PNG images — photos of receipts, scanned pages, screenshots — into a single PDF, you have three free options: the Create PDF Quick Action built into the Mac’s Finder, the Print to PDF dialog on Windows, or a browser tool like SnapPDF’s Image to PDF that lets you drag the images into order before converting.

All three get you one PDF with one image per page. The differences are control over page order and what happens to image quality — covered honestly below, along with the common gotchas (sideways photos, giant file sizes, and mixed formats).

On a Mac: Finder’s Create PDF Quick Action

1. In Finder, select all the images — click the first, then Shift-click the last, or Cmd-click individually.
2. Right-click the selection and choose Quick Actions → Create PDF.
3. A new PDF appears in the folder, one image per page.

Fast, offline, and free — with one recurring annoyance: page order follows how the Finder lists the files, not the order you clicked them. Photos named IMG_2041.jpg onward come out fine; files with mixed names get shuffled. The fix is renaming with number prefixes before converting, which is exactly the busywork the browser method avoids.

On Windows: Print to PDF

1. Select the images in File Explorer.
2. Right-click and choose Print. Windows opens its photo-printing dialog.
3. Choose Microsoft Print to PDF as the printer, pick the full-page layout, and print. You’ll be asked where to save the PDF.

This works on every Windows machine with nothing to install. The dialog gives you paper-size layouts rather than true image-sized pages, so expect white margins around photos whose proportions don’t match the paper — acceptable for receipts and documents, less so for a photo portfolio.

In your browser: drag into order, then convert

1. Open the Image to PDF tool in any browser, on any system.
2. Drop in your JPG or PNG files — any mix of the two is fine.
3. Drag the images into the exact order you want. This is the step the built-in methods make you fake with file renaming.
4. Convert and download a single PDF.

Each image becomes a page at the image’s own dimensions — no paper-size letterboxing, no forced margins, and no recompression, so the pages look exactly like the source images. And like every SnapPDF tool, the conversion runs entirely in your browser: your images are never uploaded anywhere, which matters when the “images” are photographed IDs, medical paperwork, or receipts. (Here’s how to check that claim on any tool.)

The gotchas, and how to avoid them

• Sideways photos: phones sometimes store rotation as metadata that PDF converters ignore, so a photo that looks upright in your gallery comes out sideways in the PDF. If it happens, rotate the affected pages and save — a thirty-second fix.
• Huge output files: a PDF made from a dozen full-resolution phone photos can easily be tens of megabytes. If it’s headed for email or an upload form, compress the PDF after converting — our guide to getting under 1MB covers how far you can push it.
• Wrong order discovered after converting: no need to redo the conversion — drag the pages around with the reorder tool.
• Other formats: JPG and PNG cover the overwhelming majority of cases. For formats like HEIC (the iPhone’s default), export or share the photos as JPG first — iOS does this automatically in most share flows.

Frequently asked questions

Can I mix JPG and PNG files in one PDF?

Yes — each image simply becomes its own page, whatever its format. Screenshots (usually PNG) and photos (usually JPG) combine without any conversion step.

Does converting images to PDF reduce their quality?

Not inherently. A converter that embeds the original image data — as SnapPDF and the Mac’s Quick Action do — preserves every pixel. Quality only drops if you compress the PDF afterward, or if a converter re-renders images to fit paper-size pages at lower resolution.

How do I put multiple images on one page?

That’s a layout job rather than a conversion job. The Windows print dialog offers multi-image layouts (4-up, 9-up, and so on), or arrange the images in a document editor and export to PDF from there. One-image-per-page converters are the wrong tool for contact sheets.

Can I add the images to an existing PDF?

Convert the images to their own PDF first, then merge the two PDFs — the merge tool handles the rest, and you can put the image pages wherever they belong in the combined file.