What happens to the transparent parts of my PNG?

PDF pages have no transparent background, so transparency is flattened onto white. Your chart lines stay exactly where they were.

Why is the PDF so large?

PNG is lossless, so a screen-full of pixels weighs far more than a JPG of the same view. Compress PDF will re-encode the images inside the document.

Is there a file size limit?

A single file may be up to 100 MB, and a batch up to 50 files. Those are guardrails rather than a paid tier — the work happens on your machine, so an enormous document is limited by your own memory before it is limited by us.

Where does the processing actually happen?

In this tab. The file is read locally, converted or edited locally, and handed back as a download — no copy is sent to a server, so there is nothing for anyone to breach or keep.

Will it work on a phone?

Yes. The layout adapts to a small screen and the processing runs in the mobile browser, so a photo or a downloaded document can be handled on the device it arrived on.

PNG to PDF

Combine PNG images into one paginated PDF.

Drag & drop your images here

Accepted: png — order is kept

Add at least one image first.

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About PNG to PDF

Convert PNG to PDF and get a paginated document built from your images. Screenshots, exported charts, diagrams and design boards travel better as one file than as a folder of PNGs.

Packing screenshots or exported charts into one document for review.

How to use PNG to PDF in 3 steps

Drop the PNG files onto the drop area in reading order.
Choose the page size each image should sit on.
Build the PDF and download it.

What you get with PNG to PDF

Lossless PNG quality is carried into the PDF
Transparency is composited onto white so nothing turns into a black box
Several screenshots become one document to print or share
Runs in your browser — the file is never uploaded
Free to use, with no signup and no account
No watermark or logo added to your output
Works on desktop and mobile, no install

PNG to PDF: questions

What happens to the transparent parts of my PNG?: PDF pages have no transparent background, so transparency is flattened onto white. Your chart lines stay exactly where they were.
Why is the PDF so large?: PNG is lossless, so a screen-full of pixels weighs far more than a JPG of the same view. Compress PDF will re-encode the images inside the document.
Is there a file size limit?: A single file may be up to 100 MB, and a batch up to 50 files. Those are guardrails rather than a paid tier — the work happens on your machine, so an enormous document is limited by your own memory before it is limited by us.
Where does the processing actually happen?: In this tab. The file is read locally, converted or edited locally, and handed back as a download — no copy is sent to a server, so there is nothing for anyone to breach or keep.
Will it work on a phone?: Yes. The layout adapts to a small screen and the processing runs in the mobile browser, so a photo or a downloaded document can be handled on the device it arrived on.