Crisp, lossless images of your PDF pages
Sometimes a PDF page needs to become an image, and a soft JPG will not do: the wiring diagram whose labels must stay readable, the chart going into a printed report, the page you plan to crop and annotate. PNG is the lossless choice, storing every rendered pixel exactly. This converter renders any page range of a PDF to PNG at up to 216 DPI, inside your browser, using pdf.js, the renderer built into Firefox. Nothing is uploaded. Server converters make you hand over the document and wait; here the file is opened in your own tab, rendered locally, and the images are yours to download page by page or as one ZIP.
How to convert PDF to PNG
Drop the PDF onto the box and its page count appears. Choose a resolution, 144 DPI for most jobs or 216 for print and close crops, and set the page range if you do not need the whole document. Convert, and each finished page is listed with its pixel size and file size. Download pages individually, or all at once as a ZIP. Files are named with their page numbers automatically, so a long document produces a tidy, ordered set of images instead of a pile of downloads to rename.
When PNG is worth its bigger files
- Print and close crops: lossless pixels survive cropping into a corner of a page and still print cleanly.
- Diagrams, plans and sheet music: thin lines and small notation smear in JPG and stay exact in PNG.
- Annotation and editing: an image you will mark up and re-save repeatedly should start lossless.
- Documentation and evidence: screenshots of records, certificates and statements stay faithful to the original page.
- Design assets: pulling a page into a design tool keeps text edges crisp for further work.
How the rendering works
A PDF describes each page as drawing instructions in a fixed physical size, not as a picture. pdf.js carries out those instructions onto a canvas at the scale behind your DPI choice: 144 DPI doubles the standard 72 point rendering, 216 triples it. Because the page is drawn fresh from its vector instructions and embedded images, text is genuinely sharper at higher settings, not merely upscaled. The canvas is then written out as PNG. PNG compression is lossless pattern matching, so a rendered page of mostly text compresses surprisingly well, while photo heavy pages produce larger files than JPG would. That trade, size for exactness, is the whole reason this page exists alongside the JPG version.
Tips for better results
- Render once at the highest DPI you might need. Downscaling a 216 DPI PNG later is clean; upscaling a 72 DPI one never is.
- Keep ranges modest on big files. At 216 DPI a single A4 page can be 3500 pixels tall. Fifty pages at once is the built in limit for a reason.
- Need transparency? Pages are rendered on white here, matching how PDFs are normally viewed. For transparent output you would need the original artwork, not a rendered page.
- Shrink afterwards for the web. Run a finished PNG through the Image Compressor to make a light JPG or WebP copy for posting, and keep the PNG as the master.
A worked example
An electrician needs the wiring diagram from page 18 of a 60 page equipment manual, sharp enough to read wire labels on a printed A4 sheet at a job site. He sets the range to page 18 only, picks 216 DPI, and converts: a single PNG, roughly 1800 by 2550 pixels, with labels crisp enough to print. The rest of the manual, including pages with supplier pricing, never left his laptop because the conversion never involved an upload.
Prefer smaller files for sharing? The PDF to JPG converter renders the same pages at a fraction of the size, and JPG to PDF assembles images back into a document.