JPG or PNG for PDF pages? Choose by content

Choose JPG for photographic pages

JPG uses lossy compression and is efficient for photographs, gradients, and pages with lots of natural color variation. It can produce much smaller files than PNG for photo-heavy pages.

The cost is compression artifacts. Around small text, thin lines, and sharp high-contrast edges, JPG can introduce blur or ringing—especially at lower quality settings.

Choose PNG for sharp interface-style content

PNG uses lossless compression. It is often a better fit for screenshots, diagrams, line art, charts, UI mockups, and pages where text clarity matters more than the smallest possible file.

PNG files can be significantly larger for photographic pages because lossless compression does not discard visual detail the way JPG does.

Resolution matters as much as format

Converting at a higher DPI creates more pixels. That can improve readability when zooming or printing, but it also increases file size and processing time. A lower DPI is usually fine for preview images; higher values are more suitable when users need to inspect fine detail.

• For thumbnails or quick web previews, moderate resolution is usually enough.
• For screenshots or diagrams with tiny labels, prefer PNG and sufficient resolution.
• For photographs where size matters, JPG usually gives a better size-to-quality ratio.
• Always inspect one converted page before processing a very large document.

Remember that conversion changes the document

Once a PDF page becomes an image, searchable text, links, form fields, annotations, and vector objects no longer behave like they did in the PDF. Use image conversion only when an image is actually the desired output.

Use PDF to JPG for photo-friendly output or PDF to PNG for lossless page images.