Convert PNG to PDF
Drop one or many PNG files and download a single PDF that preserves every pixel. Each PNG is embedded losslessly — no JPG re-compression — so screenshots, diagrams and text remain razor-sharp. The whole conversion runs locally in your browser through pdf-lib.
How to convert PNG to PDF
- Drop your PNG files into the box. Drag the thumbnails to reorder pages.
- Each PNG is embedded losslessly into a new PDF, one page per file.
- Download the resulting PDF.
Why convert PNG to PDF?
PNG to PDF is the most common request for screenshot-heavy documents: bug reports, design reviews, software documentation, slide handouts, instructional walkthroughs, and academic papers. Unlike a JPG-based PDF, a PNG-embedded PDF keeps every pixel of the source intact, which matters enormously when the page contains text, charts, code, fine line art or anything else that suffers from lossy compression. The trade-off is file size: a typical screenshot that is 200 KB as a PNG stays 200 KB inside the PDF, while the equivalent JPG-based PDF would be roughly 50 KB. For text-heavy documents prefer PNG to PDF; for photo-heavy documents JPG to PDF is more bandwidth-friendly. The page size of the PDF matches each PNG exactly, so designed elements you placed at specific coordinates (a watermark, a logo position, a precise crop) land exactly where you put them.
How we compare
The closest peer to this tool is Google's Squoosh, which also runs fully in your browser. Squoosh focuses on compression for the modern web and does not handle HEIC or batch conversion. Cloudconvert and Convertio cover more formats but upload your files to their servers and meter usage.
| This site | Squoosh | Cloudconvert | Convertio | |
|---|---|---|---|---|
| Files stay on your device | ||||
| No signup | Limited | Limited | ||
| No ads | ||||
| Batch conversion | ||||
| Supports HEIC | ||||
| Works offline |
Frequently asked questions
Is the conversion really lossless?+
Yes. The PNG bytes are embedded into the PDF without re-compression. The pixels in the PDF are identical to the source PNG.
Are my files uploaded?+
No. PDF generation runs locally in your browser via pdf-lib WebAssembly.
Why is the PDF so large compared to a JPG-based one?+
PNG keeps every pixel uncompressed in colour terms. PDFs that embed JPGs are smaller because JPG is a lossy format. For screenshots and text, the larger size is worth the visual fidelity.
Does it preserve transparency?+
Yes. Transparent PNG areas remain transparent inside the PDF.
Can I add a password or watermark?+
Not in this tool. Combine the PDF here, then use a dedicated PDF utility for encryption or watermarking.
Will the page sizes vary if my PNGs are different dimensions?+
Yes. Each page in the PDF matches the dimensions of the source PNG exactly. If you need a uniform page size, resize the PNGs first using the image resizer.
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