How to Convert PNG to PDF
Open the Image ↔ PDF Converter, switch to "Image → PDF", drop your PNG files, and click Convert. Each PNG becomes one page, embedded at its original resolution — nothing is uploaded.
Key takeaways
- Input: PNG — and you can mix in JPG, WebP, HEIC, TIFF, BMP or GIF in the same batch.
- One image = one page, in the order you add them.
- Lossless: PNGs are embedded at native resolution with no re-encoding.
- Transparency: transparent PNGs get a solid white page background, because PDF pages are opaque.
- No limits: convert one image or a hundred — your browser is the only constraint.
- 100% private: images are embedded with pdf-lib in your browser. No uploads.
Why convert PNG to PDF?
PDF is the format that opens the same way everywhere and prints predictably. Turning PNGs into a PDF lets you submit scans, combine screenshots into one document, or send a set of images that cannot be reordered or scattered in an email.
How to convert PNG to PDF
- Open the Image ↔ PDF Converter.
- Switch to the "Image → PDF" tab.
- Drag in one or more PNG files, or click to browse.
- Check the order in the file list — it becomes the page order. Remove any file with the ✕ button.
- Click Convert, then Download to save the PDF.
PNG vs JPG for building a PDF
| Source | Quality in the PDF | Transparency | Best for |
|---|---|---|---|
| PNG | Lossless — identical to the source | Flattened to white | Screenshots, text, diagrams, signatures |
| JPG | Kept as-is (already lossy) | Not supported | Photos and scans |
Page order and layout
Each image becomes one page sized to that image, so mixed portrait and landscape pages are fine. The order is exactly the order shown in the file list — drag your files in the order you want them before converting, or remove and re-add them.
Caveats
- Transparency becomes white. PDF pages do not support transparency, so any see-through areas in a PNG are filled with white.
- Huge images make huge PDFs. A 6000-pixel-wide PNG stays 6000 pixels wide. Resize first if you need a smaller file.
- No text layer. The output is image-only, so text in the PDF is not selectable. Add OCR afterwards if you need searchable text.
Is it private?
Yes. The images are embedded into the PDF with pdf-lib, entirely inside your browser. Your files never leave your device, and the tool keeps working after you disconnect from the internet.
Frequently Asked Questions
Can I combine several PNGs into one PDF?+
Yes. Drop all the images at once — each becomes one page, in the order you added them. You can also mix PNG, JPG, WebP, HEIC, TIFF, BMP and GIF in the same batch.
Do transparent PNGs keep their transparency in the PDF?+
No. PDF pages are opaque, so transparent areas are filled with white. If you need transparency, keep the image as a PNG instead of converting it.
Is the image quality reduced?+
No. PNGs are embedded at their native resolution without re-encoding, so the PDF looks identical to the source images.
Can I convert a single PNG to PDF?+
Yes. A single image produces a one-page PDF.
Are my files uploaded?+
No. Conversion happens entirely in your browser with pdf-lib. Nothing is sent to a server.