PNG to PDF — Images to a Single PDF, in Your Browser

How to convert PNG to PDF in your browser

1. Choose one or more PNG images. The order you pick them is the order they appear in the PDF — use your file picker's sorting if you need a specific sequence.
2. Choose the page size. "Fit" makes each page exactly the image's dimensions (best for screenshots and diagrams). A4 and Letter center the image on a standard page with your chosen margin — best for printing.
3. Hit convert. Each image is embedded at full resolution; there is no re-encoding step, so nothing is softened.
4. Download the PDF — it is already on your device, waiting.

Why keep the full resolution?

Many converters downsample to a fixed 72 or 96 dpi, which makes text in a screenshot blurry the moment you zoom. This tool embeds the PNG bytes as-is: a 4K screenshot stays crisp at 400% zoom, and the PDF stays smaller than you'd expect because PNG data is stored with the same compression the image already had.

Does the transparency survive?

Yes. PNG alpha channels are embedded into the PDF as-is. On a white page background a transparent PNG looks exactly like it did in your image viewer; if you share the PDF with someone who views it on a colored background, the transparent parts will show that background — a property of the image, not a bug.

PNG, JPG or WebP — which should I use?

Photos: JPG (smaller, no visible loss at good quality). Screenshots, logos and line art: PNG (sharp edges, true colors, optional transparency). WebP: accepted here, but for the long term PNG or JPG are the safest pair for archives.

Is my file uploaded anywhere?

No. The conversion uses your browser's own image decoder and a PDF writer that runs locally. Open the network panel while you convert — you will see zero outgoing requests for the file itself.

FAQ

• Is my file uploaded to a server? No. The tool runs entirely in your browser — your file never leaves your device. You can verify it yourself: open the network panel and there is no upload request while you work.
• Do I need an account, and is it free? No account and no cost. It is free to use — no signup, no paywall, no daily limit.
• Which browsers does it work in? Any modern browser — Chrome, Edge, Firefox and Safari — on desktop or mobile.
• Is there a size limit? There is no server-side limit because nothing is uploaded. Practical limits come from your device's memory, which comfortably covers normal documents and photos.
• Does it work with encrypted PDFs? Standard PDFs work in every tool. If a file is password-protected, Unlock PDF opens it for you when you have the password, and Protect PDF applies a new 256-bit AES password. No tool bypasses encryption without the key.