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KioTools
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Add Page Numbers to PDF

Stamp page numbers with a live preview.

Crop PDF

Trim margins off every page, by hand or automatically.

Dark Mode PDF

Invert a PDF's colours for comfortable night reading.

Convert PDF to PNG

About this option

PNG keeps text and line art crisp and supports transparency, which makes it the format of choice for slides, diagrams and screenshots saved as PDF. This preset renders each page at 2× resolution as a lossless PNG and bundles the pages into one ZIP.

When to use it

  • Putting a PDF slide or diagram into a document or website
  • You need pixel-perfect text and sharp lines with no compression artefacts
  • Extracting a single page as an image to share in chat

How to use it

  1. 1Drop the PDF — PNG at high resolution is already selected
  2. 2Enter the pages you want, or leave the box empty for all of them
  3. 3Click Convert and wait for the pages to render
  4. 4Download the images (a single page downloads directly, several arrive as a ZIP)

Frequently asked questions

Why choose PNG instead of JPG?

PNG is lossless, so text edges stay sharp. JPG makes smaller files for photographs but blurs fine text slightly.

How big will the images be?

At the High setting each page is rendered at twice screen resolution, about 1800 pixels wide for a standard page.

Is my PDF uploaded to a server?

No. Pages are rendered by your own browser and never leave your device.