PDF to JPG vs PDF to PNG: Which Output Format Should You Pick?

When converting a PDF page to an image, you have two common choices: JPG and PNG. The right choice depends on what the PDF page contains and what you plan to do with the image. Choosing wrong means either unnecessarily large files or visible quality degradation.

When to choose JPG

Choose JPG when the PDF pages contain photographs, coloured backgrounds, gradients, or complex imagery. JPEG compression handles continuous-tone content efficiently — a photograph converted from PDF to JPG at quality 85 will be a fraction of the equivalent PNG size with no visible difference at normal viewing distances.

• Reports with photo inserts or coloured chart backgrounds.
• Product brochures with full-colour photography.
• Scanned documents (which are photographs, technically).
• Any page where you want the smallest file size and don't need exact pixel reproduction.

When to choose PNG

Choose PNG when the PDF pages contain crisp text, line art, diagrams with flat colours, or any content where exact pixel reproduction matters. JPEG artefacts are particularly visible around high-contrast edges — the border between black text and a white background, a sharp line in a diagram, or the edge of a logo.

• Text-heavy documents where readability of the image text is important.
• Technical diagrams, flowcharts, architectural drawings.
• Pages with logos or icons that have sharp edges.
• Any use case where the image will be zoomed into or examined closely.

The file size trade-off

For a typical letter-sized PDF page at 150 DPI, a JPG version is typically 100–300 KB. The same page as a PNG might be 500 KB to 2 MB depending on content complexity. For a 20-page document, that difference compounds to a significant gap in ZIP download size. If the pages contain photographs, JPG is almost always the right call purely on efficiency grounds.