How to export pdf diagrams and charts as png images
- Step 1Upload the PDF containing diagrams — Drop the technical document into the converter.
- Step 2Select the diagram page numbers — Export only the pages containing diagrams.
- Step 3Set DPI to 150-300 — Higher DPI preserves small labels and fine lines in technical diagrams.
- Step 4Download and use — Import the PNG into your wiki, documentation site, or presentation.
Frequently asked questions
Why is PNG better than JPG for diagrams?+
PNG is lossless — thin lines and small text remain sharp. JPG introduces compression artefacts around hard edges that make diagrams look blurry.
What if the diagram spans two pages?+
Export both pages as PNGs and stitch them in an image editor, or crop the relevant area from each page.
Can I import the PNG directly into Confluence or Notion?+
Yes — PNG files are natively supported as inline images in Confluence, Notion, GitHub, and all major documentation platforms.
Privacy first
All PDF processing runs locally in your browser using PDF-lib and pdf.js. No file is ever uploaded — only metadata counters are saved for signed-in dashboard stats.