PNG to PDF
Combine PNG images into one PDF. Transparency flattens to white. Your files never leave your browser.
Page size
Orientation
Margin
Your file never leaves your computer
This tool runs entirely in your browser. There is no upload endpoint on this page — the PDF library does all of the work locally on your device, the result file is generated in memory, and the download starts from your own machine. Open your browser's network panel and verify: nothing is sent.
FAQ
PNG to PDF questions, answered
What happens to transparency in my PNGs?
PDF pages don't really have a "background" the way an image does — the page has a colour (usually white). Transparent areas in your PNG end up over that white background, so they appear white in the output. If you need transparency preserved for design work, use a vector PDF tool instead.
How many PNGs can I combine?
No hard limit. PNG files are typically larger than JPGs of the same image, so memory becomes the constraint sooner — maybe 50 high-resolution PNGs on a laptop. Smaller screenshots: hundreds.
Can I reorder them?
Yes. With two or more files added, you'll see an order panel with up/down arrows. Set the order before clicking convert.
Will the PNG quality drop?
No. PNGs are embedded into the PDF without re-encoding, so the original quality is preserved exactly. The output file size will be roughly equal to the sum of your input PNGs plus a small PDF overhead.
My screenshot tool saves as PNG — is that fine?
Perfect, in fact. Screenshots, diagrams and UI mockups all work brilliantly. For photos, JPG to PDF is usually better because the file size is much smaller.
Other free PDF tools
Every one runs in your browser. No uploads, no signup.
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