Combine PNGs into a PDF.
Drop multiple PNG images and we'll build a single PDF — one image per page, in the order you arrange them. Common use cases: combining screenshots into a tutorial, packaging a set of UI mockups, or making a portfolio PDF from exported designs. Everything stays in your browser.
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Stays on your device
Screenshots, work-in-progress designs, exported mockups — content that often shouldn't go on someone else's server. None of it uploads. The entire conversion runs in your browser tab.
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Lossless quality
PNG embedding preserves every pixel exactly — no JPG-style recompression artifacts. The PDF looks identical to the input PNGs, just packaged into pages.
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Auto-size keeps things crisp
The "Auto" page size makes each page the same dimensions as its source PNG, which works perfectly for screenshots and exported design files — no awkward scaling, no whitespace around content.
How it works
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Drop your PNGs
Multiple files at once. Each PNG becomes one page. Use "+ Add more" to keep adding after the initial drop.
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Set the order
Use the up/down arrows to arrange pages. The PDF will follow your order — no surprises from alphabetic filename sorting.
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Combine and save
For most page sizes, "Auto" works great with PNGs. If you need standard paper sizes for printing, pick Letter or A4.
Frequently asked questions
Does this preserve transparency in the PNGs?
PDF technically supports transparency, and pdf-lib does preserve the alpha channel when embedding PNGs. How transparency renders depends on the PDF viewer — most modern viewers handle it cleanly; some older or enterprise-printing systems may flatten transparent areas to white.
Can I mix PNGs and JPGs?
Yes — drop both formats and the tool handles each correctly. JPG inputs go through the JPG embedding path; PNG inputs through the PNG path.
Why is the PDF so big?
PNGs are lossless and tend to be larger than JPGs at the same dimensions. A PDF made of PNGs will roughly match the sum of the input file sizes. If size matters more than perfect fidelity, you can either: convert PNGs to JPG first with our PNG to JPG converter, then combine; or run the resulting PDF through our PDF Compressor.
What's the difference between Auto, Letter, and A4 page size?
"Auto" makes each PDF page the same dimensions as its image — perfect for screenshots and design exports where you want pixel-exact preservation. "Letter" (8.5×11") and "A4" (210×297mm) give every page a standard paper size with the image scaled to fit — use these when the PDF needs to print on standard paper.
Can I reorder by drag and drop?
Not in v1. The up/down arrow buttons work reliably across desktop and mobile; drag-reorder is hard to do well on touch. We may add drag support later.
What about WebP?
WebP isn't directly supported yet. Convert WebPs to PNG first with our WebP to PNG converter, then come back here to combine.