Convert PNG to PDF Online Free — Image to PDF in Seconds

Transform one or more PNG images into a high-quality PDF directly in the browser. Perfect for screenshots, graphics and logos with transparency. Free, no account, no server upload.

Image to PDF conversion illustration: JPG/PNG photo transformed into a PDF document

Drag your PNG images here

or drag the file here

100% private
Instant
Free

or open the full PDF editor for annotations, signatures and much more.

How it works

Upload your images

Select one or more PNG files or drag them into the upload area. Transparency is preserved.

Set the options

Choose the page format and how to handle transparency (white background or transparent).

Download the PDF

Click "Convert to PDF" and the document is generated and downloaded instantly.

Why OnlinePdfEditor

100% Private

Everything runs in the browser via WebAssembly. Your PDF is never sent to any server.

Instant

No upload, no queue. Processing is local and completes in seconds even for large files.

Free, no tricks

No required account, no credit card, no watermark. Truly free.

Works everywhere

PC, Mac, iPhone, Android — just a modern browser. Safari, Chrome, Firefox or Edge.

How it works

Converting PNG images to PDF is particularly useful when images contain transparency or sharp text: the PNG format is lossless and produces PDFs with high-definition graphics. OnlinePdfEditor converts one or more PNG images into a single PDF file, preserving original quality.

You can upload screenshots, charts, logos, or any other PNG image. The resulting PDF is ideal for technical documentation, manuals with screenshots, presentations with charts exported as PNG, or any content where text sharpness in the image is essential.

A technical difference from 'JPG to PDF': PNGs with an alpha channel (transparency) are composited on a white background before insertion in the PDF, because the standard PDF format does not support transparency in raster images. This means transparent areas in your logo or icon will become white in the PDF — if you need a different background, set it in the PNG before converting. PNGs without transparency (RGB or grayscale) are inserted as-is, with lossless compression that preserves every pixel of the original.

Frequently asked questions

La trasparenza PNG viene conservata nel PDF?

No. Il formato PDF standard non supporta la trasparenza nelle immagini raster. Le aree trasparenti vengono compositate su sfondo bianco. Se hai bisogno di uno sfondo colorato, impostalo nella PNG prima della conversione.

Qual è la differenza rispetto a 'JPG in PDF'?

PNG è lossless: ogni pixel è preservato esattamente, ideale per testo, grafici e screenshot. JPG è lossy: comprime le immagini riducendo la qualità, ottimo per fotografie ma inadatto per testo nitido. Usa PNG per documentazione tecnica, screenshot e loghi; JPG per fotografie.

Is PNG transparency preserved in the PDF?

No. The standard PDF format does not support transparency in raster images. Transparent areas are composited on a white background. If you need a colored background, set it in the PNG before conversion.

What is the difference compared to 'JPG to PDF'?

PNG is lossless: every pixel is preserved exactly, ideal for text, charts, and screenshots. JPG is lossy: it compresses images reducing quality, excellent for photographs but unsuitable for sharp text. Use PNG for technical documentation, screenshots, and logos; JPG for photographs.

Is PNG transparency preserved in the PDF?

PDF format supports transparency. You can choose to keep the transparent background or apply a white background for maximum compatibility.

Can I convert multiple PNGs into a single PDF?

Yes. You can upload multiple PNG images at once and they will be combined into a single PDF document, one per page.

What is the difference between converting PNG and JPG to PDF?

PNG is a lossless format ideal for logos, screenshots and graphics with flat areas. JPG is better for photos. Both produce high-quality PDFs.

Are my files uploaded to a server?

No. The conversion happens entirely in the browser. Your images never leave your device.

Does it work on smartphones?

Yes. It works on any modern browser on iOS and Android.

Ready to start?

Free, in the browser, nothing to install. Upload your PDF and go.

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