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SVG vs PNG vs JPG: When to Use What

Pick the right format by asking one question.

Posted 2026-02-24

Three formats cover almost every image on the web: SVG, PNG, and JPG. They look interchangeable at a glance, but each one has a specific job, and mixing them up costs you either file size or quality.

The one-question rule

Before diving into the details, ask this: is the source made of shapes or made of pixels?

  • Shapes (icons, logos, diagrams, charts) → SVG
  • Pixels with sharp edges (screenshots, UI mockups, pixel art) → PNG
  • Pixels with gradients (photos, rendered images) → JPG

That rule gets you the right answer 90% of the time. Everything else is a refinement.

SVG — scalable, small, editable

SVG stores vector paths, so it renders crisp at any size. It’s usually the smallest of the three for flat artwork, and it can be edited in a text editor, styled with CSS, and animated with SMIL or JS.

Use SVG for: icons, logos, illustrations, data visualizations, anything that needs to scale.

Watch out for: complex gradients and effects can bloat file size; browser compatibility for filters is uneven.

PNG — lossless raster

PNG is a pixel-based format with lossless compression and alpha transparency. Every pixel you put in comes back out unchanged, which makes it ideal for screenshots, pixel art, and UI mockups where compression artifacts would be visible.

Use PNG for: screenshots, pixel art, images with text, anywhere a lossy format would smear edges.

Watch out for: file size balloons fast on photographs. For a 1920×1080 photo, a PNG can easily be 10× larger than the equivalent JPG.

JPG — lossy raster for photos

JPG discards information you’re unlikely to notice to achieve much smaller file sizes. At quality 80–90 it looks nearly identical to the original photo while shrinking it by 5–10×.

Use JPG for: photographs, rendered scenes, anything with smooth gradients.

Watch out for: hard edges (UI screenshots, text) compress poorly and develop visible halos.

Converting between them

  • SVG → PNG / JPG: Use our SVG to PNG or SVG to JPG tools when the target platform doesn’t support SVG.
  • PNG → SVG: Vectorization, also known as tracing, works on flat artwork but not on photos. Our PNG to SVG tracer handles icons and logos.
  • JPG → PNG: Rare, but useful when you need alpha transparency. JPG has no alpha channel.

When in doubt, start with the one-question rule, then tune from there.