How to Combine Multiple PNG Files into One PDF (Free, 2026)

The 30-Second Method (Browser, Free)

The shortest path from "a folder of PNGs" to "one PDF" is a client-side combiner. That just means a tool that does the merging in your browser — no server upload, no install, no account. Here are the three steps:

1. Open Convertify's PNG to PDF combiner.
2. Drop all of your PNG files into the upload area at once (or tap to pick them from your phone's gallery).
3. Drag the thumbnails to set the page order, then click Convert. The PDF downloads in seconds.

That's the entire workflow. You'll get a single multi-page PDF where each PNG is one page, in the order you arranged them, at full resolution. No watermark stamped across the page, no email capture, no "upgrade to Pro to remove file size limits."

Why Combine PNGs into a Single PDF?

A single PDF is just easier to send, store, and review than a folder of loose images. Common situations where people combine PNGs into one PDF:

• Bug reports & documentation: 8 screenshots in one PDF beats 8 separate attachments in a Slack thread.
• Design reviews: A 30-screen Figma export is easier for a client to flip through as one PDF than as 30 PNGs in a Drive folder.
• Scanned receipts & expense reports: Combine the PNG scans of every receipt for the month into one PDF before submitting.
• School & college submissions: Many portals require homework as a single PDF, even if your assignment is across multiple PNG screenshots.
• Government form uploads: Most portals (visa applications, job portals, university admissions) accept one PDF — not multiple PNGs.
• Comic, manga, or storyboard archiving: Bundle a chapter into one PDF for offline reading.

Combining PNGs on Windows & Mac

On both Windows and Mac, you have three options. Here's how they actually compare for combining PNGs:

Option 1: Convertify (browser-based)

Open the PNG to PDF combiner, drag in your PNGs, reorder, click Convert. Works on Chrome, Firefox, Edge, and Safari. Nothing is uploaded. This is the only option that doesn't need an install and doesn't add a watermark and respects your privacy.

Option 2: Mac Preview (built-in)

Open the first PNG in Preview. Drag the other PNGs into the sidebar to add them as pages. File → Export as PDF. Free, but reordering is clumsy with more than ~10 images, and there's no batch import — you have to drag files in one at a time.

Option 3: Windows "Print to PDF"

Select the PNGs in File Explorer → right-click → Print → choose "Microsoft Print to PDF." Each PNG becomes a page. The catch: page order follows file name sort order, so if you want a specific sequence you have to rename your files first. It also tends to add visible margins around each PNG.

Combining PNGs on iPhone & Android

iPhone & iPad

Two ways: the Files app can do it natively (long-press a PNG → Quick Actions → Create PDF), but that method only handles PNGs that are already saved to Files, and the page order is whatever order the system picks. For batches from the Photos app, or when you need to reorder, open Convertify in Safari — you can select directly from your photo library and the drag-to-reorder works with touch.

Android

Most Android "PDF maker" apps from the Play Store ask for storage permissions and add a watermark on the free tier. Open Convertify in Chrome instead. No app install, no permission prompts beyond the file picker, no watermark.

Keeping the Output HD & Compact

A common worry: "If I combine 30 PNGs, won't the PDF be huge?" Sometimes — but you have control. A few rules:

• Don't resize PNGs before combining. The combiner doesn't add any quality on top of the source — it just embeds what you give it. Combining originals at 300 DPI is fine.
• Screenshots compress beautifully. A typical 1920×1080 screenshot PNG is ~200KB. Twenty of them combine to a ~4MB PDF, which is fine for email.
• Photos compress less well as PNG. If your "PNG" is actually a phone photo saved as PNG, you're fighting a losing battle on file size — JPG would have been smaller. Consider converting to JPG first, or compress the resulting PDF.
• Compress the PDF after, not the PNGs before. If you need a smaller file, run the combined result through our PDF compressor. You'll get a much smaller file than if you tried to compress each PNG individually first.

Troubleshooting: When the PDF Is Too Big

Most upload portals (visa applications, government forms, university submissions, job portals) cap PDFs at 100KB, 200KB, or 1MB. If your combined PDF is over that limit, here's the order to try fixes in:

1. Compress the combined PDF. Run it through our PDF compressor with the "High" setting. A 5MB image-heavy PDF often shrinks to 200–400KB.
2. Drop unnecessary pages. Use delete PDF pages to remove anything that wasn't actually required.
3. Convert color screenshots to grayscale. Color information roughly triples a PDF's size. If the document doesn't need color (most government forms don't), grayscale + high compression usually fits well under 100KB.
4. Split into multiple PDFs. If the portal allows multiple file uploads, use split PDF to break the combined file into smaller ones.

For a deep-dive on hitting strict size limits, see our guide on compressing PDFs under 100KB for government forms.

How Convertify Compares to Other Tools

Frequently Asked Questions