Free Online PNG to PDF

About PNG to PDF

PNG is the default format for screenshots, exported diagrams, and graphics with sharp edges or transparency, and combining several of them into a single PDF is a common need — a set of screenshots documenting a bug report, a series of diagram exports for a technical document, or design mockups that need to go out as one file rather than a folder of loose images. This tool converts any number of PNG files into a single PDF, one image per page.

Images are added by selecting one or multiple PNG files at once, then arranged into the right order using up/down controls next to each thumbnail in the list — the final PDF's page order exactly matches this list order, so you can fix any mis-ordering before generating rather than after.

Each page is sized to match its source PNG's exact pixel dimensions, and the image data is embedded directly into the PDF using PNG's native compression rather than being decoded and converted to another format — this preserves image quality exactly, including PNG's lossless detail and any transparency information encoded in the file.

Because PNG files (unlike JPG) commonly contain transparency, it's worth noting that a transparent PNG embedded this way keeps its alpha channel information in the PDF, but since each image becomes an opaque page background, transparent areas won't show through to a page behind them the way they might in a layered graphics document — each page is still a single flat image.

How it works

1. Add your PNG images. Click to select one or multiple PNG files.
2. Arrange the order. Use the up/down arrows to set the page sequence you want.
3. Generate and download the PDF. Each image becomes one full page in a single combined PDF.