What Is the IMG369 PNG to PDF Converter?
This tool combines multiple PNG images into a single PDF file, one image per page, in the order you upload them. Choose whether each page should match its image's exact shape, or use a standard A4 or US Letter page with the image centered. It's built specifically around PNG rather than treating it as just another image format, since PNGs are the format most likely to carry transparency, and transparency needs to be handled deliberately when it lands on an opaque PDF page.
Add up to 20 PNGs at once, reorder or remove any before converting, and pick the page sizing that fits what the PDF is actually for. Screenshots, UI mockups, exported design assets, and scanned graphics all tend to be PNGs, and all of them are common candidates for "I just need this as one PDF."
How It Works
Each PNG is drawn onto a canvas and embedded into a PDF document built directly in your browser. Nothing is uploaded to a server, the whole file is assembled locally and handed straight to your downloads folder. Because a PDF page has no concept of transparency the way a PNG does, any transparent pixel in your source image is composited onto a solid white background before it's placed on the page, so the exported PDF always looks correct rather than showing a checkerboard pattern or unexpected black fill, which is a common bug in less careful converters.
Choosing Between Fit to Image and A4/Letter
Fit to Image keeps each page exactly the same aspect ratio as the PNG on it, useful when you want the PDF to preserve a screenshot or graphic's exact proportions without any padding. A4 or US Letter instead standardizes every page to a normal document size, centering and scaling each PNG to fit, which is the better choice when the PDF needs to look like a normal document, for example when it's going to be printed or attached to something formal.
Common Uses
Combining a run of screenshots into a single shareable PDF instead of a folder of numbered files, turning scanned document PNGs into one file for submission or filing, bundling exported design assets or UI mockups into a reviewable document for a client or teammate, preparing PNG graphics or diagrams for printing on standard paper, or archiving transparent logo and icon exports alongside their intended white-background presentation in one document.
IMG369 vs. Other Ways to Make a PDF From PNGs
Pasting PNGs into Word or Google Docs and exporting as PDF works for a handful of images, but transparency handling is inconsistent between editors and you're placing each one by hand, resizing and repositioning as you go. Online converters handle batches but usually require uploading your files to a server first, and the free tier often comes with limits on file count or size. IMG369 combines up to 20 PNGs at once, handles transparency by filling it with white automatically so there's no surprise in the output, and never sends a file anywhere.
| Method | Cost | Images leave your device | Batch multiple PNGs |
|---|---|---|---|
| IMG369 | Free | No | Yes, up to 20 at once |
| Word / Google Docs export | Free | No | Manual, one at a time |
| Typical online PDF converter | Often paid for full features | Yes, uploaded to a server | Yes |
Summary
IMG369's PNG to PDF converter combines up to 20 PNG images into one downloadable PDF, either fit exactly to each image's shape or laid out on standard A4/Letter pages, with transparent areas filled in automatically, all inside your browser with no upload and no signup. The sections above cover how transparency and page sizing are handled; the FAQ below covers page limits and file handling specifics.
Frequently Asked Questions
How many PNGs can I combine into one PDF?
Up to 20 images, each becoming its own page in the order you added them.
What happens to transparent areas in my PNG?
PDF pages are opaque, so any transparent area in your PNG is filled with white in the final document.
What's the difference between Fit to Image and A4/Letter?
Fit to Image makes each PDF page exactly the same shape as its PNG, so nothing is cropped or padded. A4 or Letter creates standard document-sized pages with the image centered and scaled to fit.
Are my images uploaded to a server?
No. The PDF is built entirely in your browser. Your images are never uploaded.