Convert PDF to PNG with a transparent background

Render PDF pages into lossless PNG images at 72 to 600 DPI, entirely inside your browser.

Drop your files here

.pdf · up to 300 MB

Choose files

How to Convert to PNG

1
Add your PDF
Drop a PDF of up to 300 MB into the box, or press “Choose files”. The page takes one document at a time: drop several and only the first one opens. Your own browser reads it, so nothing is uploaded and nothing sits in a queue waiting for a server.
2
Set DPI and pages
Choose a resolution from 72 to 600 DPI and tap any page you want to leave out. Tick “Compress further, without quality loss” for smaller files.
3
Download the PNG files
A single page comes back as one .png. Several pages arrive as a ZIP archive with each image numbered in page order.

Nothing is painted behind the page

This page is for lifting a logo, a stamp or a signature out of a PDF to lay over another document. It opens with “Transparent background” ticked and “Best quality”, 600 DPI, pressed under “Image size”; PDF to PNG itself starts with the box unticked. With the box ticked, nothing is painted behind the page. Wherever the PDF draws nothing, the PNG stays transparent, and the sheets show a checkerboard there. In our check on October 29, 2026, an A4 page printed to PDF from Chrome came out 63 percent transparent, a 4957 × 7015 PNG of 10 MB. With the box unticked, the same page had no transparent pixels: that 63 percent came out solid white.

How clear four kinds of PDF came out

How much turns transparent depends on what made the PDF. Besides the Chrome page, three more of our test files came out clear. A two-page report exported from LibreOffice gave 62 percent on its page with a photo and 95 percent on its page of text. A logo on a transparent background, made into a PDF with PNG to PDF on “Keep transparency”, came out 70 percent transparent. That is the same share as the PNG it came from, so the logo's own white parts stayed. A 20-page Letter document printed from Chrome, with a logo added in Watermark PDF, gave 91 percent at 150 DPI, chosen under “More settings”. These shares belong to our test files, not to every PDF.

Why a scan stays white

Three kinds of test file had no transparent pixels at all. In a scan, the paper is part of the picture, and the picture fills the page: 72 to 75 percent of each page of our three-page scan came out white, and none of it transparent. A signature scanned on paper and made into a PDF stayed white the same way, with or without “Keep transparency”, since the scan had no transparent areas to keep. The third was our logo saved with PNG to PDF's default: its “Transparent areas” setting, under “More settings”, starts on “Fill with white”. That page came back 78 percent solid white. The box cannot clear white that the PDF itself draws.

A second step for paper in the picture

For a scan or a signature on paper, download the PNG and drop it into Transparent Background, which opens with “White backdrop”. It clears pixels close to white wherever they sit. On October 21, 2026, it made 97 percent of our signature page transparent and 94 percent of a page of text. It took the white parts of a logo and light areas of a photo too. So a logo keeps its white parts only on the first route, from a PDF made with “Keep transparency”. Our one- to three-page files were ready 0.5 to 1.7 seconds after we chose them, in Chrome on a Mac. Both steps run in your browser, and the file is not uploaded.

The document never leaves your computer

Pages are rendered inside your browser tab by its own engine, in a background thread. The PDF is not uploaded, not queued and not stored anywhere for us to delete afterwards, so confidential drawings, contracts and scans stay on your machine. To continue in another tool, PulsarKit may store a local copy of your input or result in this browser. It can remain after you close the tab or restart the browser. Clear PulsarKit’s site data to delete it.

Frequently asked questions

Should I convert a PDF page to PNG or JPG?

Choose PNG when the page holds text, tables, diagrams or line art, because nothing is blurred and edges stay crisp. Choose JPG for pages with photos and for anything you need to keep small. In our test at 150 DPI, a page with a photo was 4.5 to 5 times lighter as JPG. A page of plain text was lighter as PNG.

Why is my transparent PNG still white?

Because the white is part of what the PDF draws, and “Transparent background” leaves transparent only the places where the PDF draws nothing. A scan is a picture of white paper, and so is a signature scanned on paper. For such a page, put the PNG through Transparent Background with “White backdrop” chosen. It clears the white paper around text and signatures, but also white parts of a logo and light areas of a photo. A logo put into a PDF with PNG to PDF gets a white fill by default; made with “Keep transparency” under “Transparent areas”, it comes out here as transparent as the original.

Which DPI do I need for printing?

Use 300 DPI for print, which is the usual standard for documents and photographs. For screens, 150 DPI is enough, and 72 or 96 DPI is fine for previews. Above 300 DPI files grow fast without looking any better on a monitor.

How is this different from extracting images from a PDF?

This draws the whole page, text and vector graphics included, into one flat picture. Extracting images returns only the photos somebody embedded in the file, at the size they were stored, and leaves out everything drawn around them.

Is a PNG heavier than a JPG of the same page?

On pages with photos, yes: PNG compression is lossless and must keep every pixel intact, while JPEG throws away detail the eye rarely notices. On pages of plain text it can be the other way round. In our test at 150 DPI, all 20 pages of a text document came out lighter as PNG than as JPG. That is why PNG is the right choice for sharp text and the wrong one for a large photographic scan you plan to email.

What does the optimisation option do?

“Compress further, without quality loss” re-compresses each finished PNG with oxipng, which searches for a better encoding of the same pixels. The image is identical pixel for pixel after decoding. On October 21, 2026, at 150 DPI, it cut pages of text by about three quarters and pages with a photo by about 30 percent. It added half a second to two seconds per page in Chrome on a Mac.