How to Convert PNG to PDF Online

When to Convert PNG to PDF

PNG images and PDF documents serve different purposes, but there are good reasons to convert between them. You might need to combine multiple PNG screenshots into a single document for easy sharing. A client might request a portfolio image delivered as a PDF. A form filled in as an image needs to become a printable PDF. Or you simply want a file format that preserves layout reliably across different devices and printers.

Converting PNG to PDF is straightforward and takes seconds with the right tool. The result is a PDF where each page contains one of your PNG images, sized to fit the page.

How to Convert PNG to PDF with Switch & Shrink

1. Open Switch & Shrink in your browser.
2. Upload your PNG file (or multiple PNG files for a multi-page PDF).
3. Select PDF as the output format.
4. Click Convert. Your PDF is generated server-side and ready in seconds.
5. Download the PDF file. Files are automatically deleted from the server after download.

This works on any device — desktop, tablet, or mobile — without installing any software.

Converting Multiple PNGs into a Single PDF

If you have multiple PNG images that should become pages in a single PDF document, upload them all together using the batch upload feature. After conversion, you'll get a ZIP containing a separate PDF per image, which you can then merge using the Merge PDF tool to combine them into one file.

Alternatively, if you have a set of images that form a continuous document (like scanned pages), upload them, convert all to PDF, and use Merge PDF to combine them in the correct order.

PNG vs JPG for PDF Conversion

When embedding images in a PDF, the source format matters. PNG is lossless — every pixel is stored exactly as-is. This makes PNG ideal for screenshots, diagrams, illustrations, and anything with text overlay, because there are no compression artefacts. JPG uses lossy compression, which can introduce blurring around sharp edges and text.

If your PNG contains text, charts, or technical drawings, keep it as PNG when converting to PDF for the sharpest result. If your PNG is a photograph, you could convert it to JPG first to reduce file size before embedding in the PDF — the visual difference in a photographic context is usually imperceptible.

Controlling PDF File Size

PDF files created from PNG images can be large because PNG is uncompressed by nature. A 5MB PNG will produce a PDF of roughly similar size. To reduce the PDF file size, there are two approaches:

• Compress the PNG first: Use the PNG compressor to reduce the PNG file size before converting to PDF.
• Compress the PDF afterwards: After converting, use the PDF compressor to reduce the PDF's embedded image quality and stream data.

For a PDF intended for screen viewing rather than printing, compressing afterwards is usually the most efficient approach — it can reduce a 10MB PDF to 2–3MB with no visible quality difference at typical screen resolutions.

Other Image to PDF Conversions

The same process works for other image formats. You can convert JPG to PDF, WebP to PDF, TIFF to PDF, and BMP to PDF using the same steps — just upload your image file, select PDF as the output, and download the result. Switch & Shrink supports all common image formats.

Does the PDF Preserve Image Quality?

Yes — when converting PNG to PDF with Switch & Shrink, the image is embedded at its full resolution. The PDF will look identical to the original PNG at all zoom levels. If you notice quality loss, it's likely because a PDF compressor was applied downstream. For a high-fidelity result, skip compression and export at original quality.