A page of a report for a slide
Render at 150 DPI or higher and the text stays legible when the slide is projected. At 72 DPI it will look soft on anything larger than a laptop screen.
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Use PDF to PNG
Each page is drawn on this device and encoded as an image here. No upload request is made.
Higher DPI costs more than it looksDoubling the resolution quadruples the pixels and the memory. 150 DPI is readable on screen; use 300 only when the image will be printed. Very large pages are capped to stay inside this browser's canvas limits.
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Browse all pdf toolsAbout PDF to PNG
PNG is the right target when the pages contain text, diagrams, screenshots or line art, which describes most documents people convert. The reason is how the two formats treat a hard edge. JPEG was designed for photographs and compresses by discarding detail the eye is unlikely to miss in a smooth gradient; a black letter against white paper is the opposite of a smooth gradient, and the compression leaves faint grey halos around every character. PNG stores each pixel exactly, so the type stays as crisp as the renderer drew it. The price is file size, and on a text page it is often a smaller price than people expect, because lossless compression handles large areas of flat white extremely well.
What happens to the PDF
- The document is opened by the browser's own PDF engine, with the renderer and its fonts loaded from this site rather than any third party.
- Each page is drawn to a canvas at the resolution you pick. Higher settings render more pixels rather than enlarging a small image, so text stays sharp instead of becoming blocky.
- The canvas is encoded as PNG. There is no quality slider because PNG has none: the encoding is lossless and the output is determined entirely by the render resolution.
- Each page becomes its own file, named after the source document and its page number, so a set stays ordered on disk.
- Very large pages are capped to keep the tab within a safe memory budget, and the reduction is reported rather than applied silently.
Common pdf to png jobs
Diagrams destined for a wiki
PNG keeps the thin lines and small labels intact where JPG would blur them. Crop afterwards if the page margins are not wanted.
Check before relying on the PDF
- Photographic pages are the wrong case for PNG. A scanned magazine spread can be many times larger as PNG than as JPG with no visible benefit; use the JPG converter for those.
- Higher resolution costs memory quadratically. Doubling from 150 to 300 DPI makes each page four times the pixels, so a long document at 300 DPI can exhaust a phone's memory.
- The output is an image, so the text stops being text. It cannot be searched, selected or copied afterwards, and reversing that needs optical character recognition.
- Transparency is not produced. Pages are rendered on the white background a reader would see.
- Annotations and form fields render as they appear on screen. Interactive behaviour does not survive, because an image cannot carry it.
Questions about PDF to PNG
PNG or JPG for my document?
PNG when the pages are text, diagrams or screenshots, because the edges stay sharp. JPG when the pages are photographs, because the file will be far smaller with no visible loss.
Why is there no quality setting?
PNG compression is lossless, so there is nothing to trade away. Resolution is the only control, and it decides both sharpness and file size.
What resolution should I choose?
150 DPI suits most screen use. Use 300 DPI when the image will be printed or enlarged, and 72 DPI only for a small preview.
Can I get the text back out?
Not from the image. Use the PDF to text tool on the original document instead, which reads the real text layer and is both faster and exact.
Related tools
PDF to JPG
Turn PDF pages into JPG or PNG images in your browser. Pick 72, 150, or 300 DPI, get one image per page, and upload nothing to a server.
PNG to PDF
Combine PNG images into a single PDF in your browser. The images are embedded losslessly, not re-compressed.
PDF to Text
Pull the text out of a PDF entirely in your browser. Reading order is preserved, scanned pages are reported honestly, and nothing is uploaded to a server.