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PNG to PDF converter

Convert PNG to PDF free: combine up to 50 PNGs into one PDF, reorder pages, keep transparency. Files stay on your device.

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How to use it

How to use PNG to PDF Converter

  1. Drop your PNGs into the workspace or pick them with the file picker. Up to 50 PNGs per batch, 100 MB per file.
  2. Drag rows to reorder, or use the Up/Down buttons. Each PNG becomes one PDF page sized to the image's pixel dimensions, so nothing is cropped.
  3. Click Create PDF. The PNGs are embedded losslessly with pdf-lib and the finished PDF downloads to your device.

Good for

Common use cases

Use PNG to PDF when you need one document instead of a folder of images. This tool passes each PNG to pdf-lib's native embedPng function. It does not use a Canvas or JPEG conversion step. Pdf-lib stores the decoded pixels and alpha channel in the PDF with lossless compression. This preserves flat colours, text edges, and transparency. The conversion happens in your browser. Your PNG files and finished PDF stay on your device. The tool suits interface mockups, annotated screenshots, scanned forms, diagrams, logos, and portfolio pages. Add the files in any order, then move each row before you create the PDF. Every PNG becomes one page. The page uses the image's own pixel dimensions. The tool does not crop, stretch, or place the image on a standard paper size. This keeps the source proportions intact. You can add up to 50 PNG files. Each file can be up to 100 MB. Use Images to PDF when the batch also contains JPG, WebP, or AVIF files. Use HEIC to PDF for iPhone photos in HEIC format.

Privacy

Runs in your browser

Files are processed by your browser. They never reach our servers.

Popular use cases

Ways people use PNG to PDF Converter

Combining UI mockup PNGs from Figma into a single client review PDF

Designers often export interface mockups as PNG files. A single PDF keeps those mockups in an agreed review order. It is also easier to share than many separate attachments. The lossless PNG path preserves text edges, gradients, flat colours, and transparency.

Compiling product screenshots into release notes, support tickets, or technical documentation

Engineering and product teams use screenshots in bug reports, guides, and release notes. Many screenshot tools save PNG by default. PNG preserves sharp text and interface lines. A PDF keeps the screenshots in the same order as the documented steps.

Packaging design hand-offs that include logos, icons, or transparent layers

Brand-asset packs and icon sets often include transparent PNG files. The alpha channel is part of the deliverable. A JPEG conversion would flatten that transparency. This tool uses pdf-lib's PNG embed path instead. The PDF can therefore render the transparent edges against the page background.

Building photography or illustration portfolios for direct-message review

Photographers and illustrators can use a multi-page PDF for an ordered portfolio review. Each PNG becomes one page. Common PDF readers can open the result. Browser-local conversion keeps unpublished work on the device.

Features

What this tool handles

  • Embed PNGs losslessly with pdf-lib's native embedPng. Pdf-lib decodes the PNG and stores the pixels and alpha channel as a Flate-compressed PDF image, with no JPEG roundtrip and no canvas re-encode
  • Drag-and-drop or paste PNGs straight from the clipboard. Finder, the Files app, the system screenshot tool, and CleanShot all work directly
  • Reorder pages by dragging rows or using the Up/Down buttons, with a live thumbnail preview of each PNG before you generate the PDF
  • Up to 50 PNGs per batch, 100 MB per file. The tool rejects JPG, WebP, AVIF, and other file types with a status message
  • Browser-local. Files stay on your device, with no sign-up and no watermark; pdf-lib builds the PDF in your browser tab

Questions

PNG to PDF Converter: common questions

Will this PNG to PDF converter preserve transparency in my source PNGs?

Yes. The tool uses pdf-lib's native embedPng API. Pdf-lib decodes the PNG and stores its pixels and alpha channel in the PDF. The alpha channel becomes a soft mask. This tool does not use a Canvas or JPEG conversion step. A transparent logo therefore keeps its transparent edges in the PDF.

Does converting PNG to PDF lose any image quality?

The PNG embed path preserves pixel data and alpha without JPEG compression. Pdf-lib decodes the PNG and stores the image with lossless Flate compression. The PDF does not contain a byte-for-byte copy of the original PNG file. However, the embed path avoids the quality loss that a JPEG conversion can add.

Can I rearrange the order of PNGs before creating the PDF?

Yes. The queue shows each PNG as a thumbnail row. Drag rows to reorder them, or use the Up and Down buttons. The PDF follows the queue order when you select Create PDF. Each PNG becomes one page with the source image dimensions. The tool adds no crop, scale, or padding step.

How many PNGs can I convert at once, and is there a file size limit?

Each PNG must be under 100 MB. A batch can hold up to 50 PNGs. These limits reduce memory pressure during PDF assembly. If you need a larger batch, create several PDFs. You can then combine them with Join PDF Files.

Are my PNGs uploaded anywhere when using this tool?

No. Pdf-lib builds the PDF in your browser. There is no file upload, server processing, or third-party conversion API. The source PNGs and finished PDF stay on your device. This limits file exposure for private or unpublished work. You can inspect the browser Network panel during conversion to confirm that no file upload occurs.

Will this tool stay free?

Yes. Everything this tool does is free. On some tools, a Day or Project Pass raises the file-size and batch limits if you need more.

Good to know

More about PNG to PDF Converter

How to convert PNG to PDF

Drop one or more PNG files onto this page. Put them in order with drag and drop or the Up and Down buttons. Then select Create PDF. Each PNG becomes one page in a single PDF.

How to combine several PNGs into one PDF

Add all PNG files at once. You can add up to 50 files, with a 100 MB limit for each file. The list order becomes the PDF page order. Arrange the files before you create the PDF.

What size are the PDF pages?

Each page uses its PNG's pixel dimensions. The tool does not crop or stretch the image. It does not offer A4 or Letter page sizes. If you need a fixed size, print the result to a new PDF and select the required paper size.

Converting PNG to PDF on Windows, Mac, or iPhone

This page works in any current browser. On Windows, open the image and select Print, then Microsoft Print to PDF. On a Mac, open the image in Preview and select File, then Export as PDF. On an iPhone, open the image and select Share, then Print. Use Share again from the preview to save a PDF.

PNG, JPG, or HEIC?

This tool accepts PNG files only. Use Images to PDF for a mix of JPG, PNG, WebP, and AVIF files. Use HEIC to PDF for iPhone photos.