How PDF to images works
PDF to Images renders each page of a PDF as a separate PNG or JPG file. The rendering is done by pdf.js inside your browser: each page is drawn onto an HTML canvas at your chosen resolution, then exported as an image. Your PDF file stays on your computer and is never sent to any external service.
The output quality depends on the DPI setting you choose. Higher DPI produces larger, sharper images suitable for printing or archiving; lower DPI produces smaller files better suited to web use or quick sharing. Because the rendering happens via canvas, the output is always a raster image: text and vector elements from the original PDF are drawn as pixels and are not selectable in the exported images. If you need to keep the text layer extractable, use the PDF to Text tool instead. For PDFs with many pages at high DPI, the process may take a moment as each page is rendered in sequence in your browser.