The short answer

Use PNG for crisp text, screenshots, charts, forms, and UI-heavy pages. Use JPG for scanned paper and photo-heavy documents when file size matters. Use WebP for page previews on websites and help centers.

PDF to PNG

PNG is lossless, so it is the safest default when readability matters. It keeps hard edges clean: letters, table borders, code snippets, diagrams, logos, and interface screenshots.

The cost is file size. A full-page PNG can be much larger than a JPG or WebP export, especially for scanned pages or photographic content. Use PNG when you would rather spend bytes than risk compression artifacts.

PDF to JPG

JPG is the pragmatic choice for scanned pages, receipts, signed forms, photos, and documents that mostly look like paper. It creates smaller files than PNG because it uses lossy compression.

The risk is text quality. Low JPEG quality can make small text fuzzy or add artifacts around high-contrast edges. Keep the quality high for readable documents, then resize if the file is still too large.

PDF to WebP

WebP is a strong web publishing format. It usually beats PNG on file size and can avoid some of the harsh artifacts people associate with heavily compressed JPEGs.

Use WebP when the page image will live on a website, documentation portal, or product page. Choose JPG instead when the destination is an old form or system that may not accept WebP uploads.

What about AVIF?

AVIF can make very small page images, but compatibility is the main tradeoff. It is useful for modern websites when you control the delivery environment. For general upload fields, PNG, JPG, and WebP remain safer choices.

Format choice by use case

  • Support screenshot from a PDF: PNG
  • Scanned receipt for an expense portal: JPG
  • PDF slide preview on a landing page: WebP
  • Chart or table that must stay crisp: PNG
  • Large document preview gallery: WebP
  • Unknown upload form compatibility: JPG or PNG

How to test the result

After exporting, zoom in on the smallest important text. If edges look fuzzy, raise quality, switch to PNG, or export at a larger size. If the file is too large, resize the page or switch from PNG to WebP or JPG.

The right answer is the smallest file that still preserves the information the viewer needs.