How to turn photos into a PDF, free, without a watermark

Almost every form that asks for "a PDF" doesn't actually care about the format — it just wants one file instead of a folder of loose photos. This guide covers three ways to get there: a browser tool, the method already built into Windows, and the method already built into macOS. It also covers two things most guides skip entirely: what happens to your photo's quality during conversion, and why the PDF's page size matters more than it seems.

The fast way: convert in the browser

1. Open Image to PDF.
2. Add your photos — JPG, PNG or WebP, any number.
3. Reorder them with the up/down arrows next to each thumbnail. The list order becomes the page order.
4. Create PDF — the file downloads immediately.

Two things worth knowing about how this specific tool behaves, because they differ from most of the "free" converters that show up in a search: it runs entirely in your browser rather than uploading your photos to a server first — several of the popular online converters process the file server-side even when they market themselves as private — and it doesn't force every page to a fixed size like A4, which is the source of most PDF-from-photos complaints. More on both below.

The Windows built-in method

Windows can do this without installing anything, via its "print to PDF" driver. It's slower to set up than a dedicated tool but useful if you'd rather not open a browser tab.

1. In File Explorer, select every image you want to include.
2. Right-click and choose Print. (On Windows 11, hold Shift while right-clicking if Print isn't in the shortlist.)
3. In the Print Pictures dialog, set the Printer dropdown to Microsoft Print to PDF.
4. Click Print, then choose where to save the file.

Two gotchas that catch people out here. First, page order follows filename order, not selection order — File Explorer sorts by name, so photo2.jpg prints before photo10.jpg unless your files are numbered with leading zeros (photo02.jpg). Rename the files first if the order matters. Second, the default layout can crop your photo's edges to fit the printer's page template — if the output looks cut off, uncheck "Fit picture to frame" in the print options before you print.

The Mac built-in method

Preview handles this natively, no App Store trip required.

1. Select all the photos in Finder and open them together in Preview (they open as one document with a sidebar of thumbnails).
2. Drag thumbnails in the sidebar to set the order.
3. File → Print, then click the PDF dropdown in the print dialog and choose Save as PDF.

This inherits the same idea as the Windows method — it's really "print to a PDF file" rather than a purpose-built converter — so the same page-size trade-off below applies to it too.

Why the page size matters more than it looks

This is the part most guides skip. Both built-in OS methods, and a lot of online converters, print your photos onto a fixed page size — usually A4 or US Letter — because that's what a print driver is built to do. A photo that isn't the same proportions as that page either gets padded with white space on two sides, or cropped to fill the frame. Neither is what you actually asked for, which is just "my photo, as a page."

The alternative — the one this site's converter uses — is to size each PDF page to match its own photo's pixel dimensions. A 4:3 photo gets a 4:3 page; a tall phone photo gets a tall page. Nothing is padded and nothing is cropped, and if your photos are different shapes, that's fine too — each page is independent.

Does converting to PDF reduce photo quality?

Not with this tool: your JPG, PNG or WebP file's original bytes are embedded into the PDF directly rather than decoded and re-encoded, so there's no extra generation of compression loss on top of whatever the photo already had. That's not universal — some converters decode each image and re-compress it to control the output file size, which does cost visible quality on already-compressed JPGs. If you're unsure whether a given tool does this, a quick way to check is comparing the output PDF's total size against the sum of your source photos: a PDF that's dramatically smaller has probably been re-compressed.

Quick answers

Can I mix JPG, PNG and WebP photos in one PDF? Yes — each page is handled independently, so the source format doesn't need to be consistent across the file.

What about HEIC photos from an iPhone? Convert those to JPG first — HEIC isn't one of the formats a PDF can embed directly, so it needs to become a JPG or PNG before it can become a page.

Is there a page limit or a watermark? No, on this tool — no sign-up, no watermark and no cap on how many photos you combine. Worth checking directly on any converter you use, since "free" online tools frequently mean free up to a page count, after which they ask for an account or a subscription.

Can I do this from my phone? Yes, if you're using a browser-based converter — the browser tool above works the same on a phone browser as on desktop. There's no equivalent single-tap built-in method on iOS or Android the way there is on Windows and Mac.

Will the file be smaller or larger than my original photos? Usually close to the sum of your photos' sizes, since nothing is re-compressed — plus a small amount of PDF structure overhead, which is negligible next to photo file sizes.