SVG vs PNG: which image format should you use?
SVG is best for scalable vector graphics such as logos, icons and clean UI artwork. PNG is best for pixel-based images such as screenshots, detailed transparent exports and fixed-resolution graphics.
Same graphic, different behavior when scaled
SVG keeps the artwork as scalable paths. PNG stores fixed pixels, so the same artwork can become visibly blocky when it is enlarged beyond its export size.
Sharp at icon size, hero size and retina scale.
Great for screenshots, but quality depends on exported resolution.
Best choice by use case
The easiest way to choose is to ask whether the image is made of shapes or pixels. Shape-based assets usually belong in SVG. Pixel-based visuals usually belong in PNG.
Choose SVG for
- Logos that must stay sharp on every screen size.
- Icons that need color, stroke or state changes in CSS.
- Simple illustrations, line art and diagrams.
- Graphics that should remain editable as markup.
- Inline UI assets where accessibility metadata matters.
Choose PNG for
- Screenshots and UI captures.
- Detailed raster artwork or textured graphics.
- Transparent images that must render the same everywhere.
- Exports for non-technical clients or older workflows.
- Cases where SVG security or external references are unwanted.
SVG vs PNG comparison table
| Decision point | SVG | PNG |
|---|---|---|
| Graphic type Best: Depends | Vector source Best for shapes, paths, text and clean UI artwork. | Raster image Best for screenshots, photos and pixel-perfect exports. |
| Best use Best: Depends | Logos and icons Use when artwork must stay editable and scalable. | Screenshots and detailed images Use when every pixel should stay exactly as exported. |
| Scaling Best: SVG | Scales cleanly One SVG can work at small, large and retina sizes. | Resolution limited Needs enough pixels for the largest display size. |
| Editing Best: SVG | Markup editable Paths, colors, strokes and text can be changed in code. | Pixel editing Editing usually requires an image editor after export. |
| File size Best: Depends | Smaller for simple graphics Great for icons, logos and geometric illustrations. | Better for complex pixels Often better for photos, textures and screenshots. |
| Transparency Best: Both | Built in Transparency is part of the vector document. | Alpha channel PNG supports clean transparent raster output. |
| Accessibility Best: SVG | Can be semantic Inline SVG can include title, desc and ARIA metadata. | Needs HTML alt text Meaning comes from the surrounding img alt attribute. |
| Browser support Best: PNG | Modern web ready Excellent support, but SVG content should be sanitized. | Universal Very predictable across browsers, apps and CMS tools. |
| Animation Best: SVG | Animatable Paths and elements can be animated with CSS or JS. | Static by default Use APNG or another format for raster animation. |
| Security Best: PNG | Needs sanitizing Untrusted SVG may contain scripts or external references. | Safer static asset PNG is simpler to share as a fixed image file. |
Performance and file size
SVG can be extremely small for icons, logos and geometric artwork because it stores drawing instructions instead of pixels. However, exported SVGs from design tools can become bloated with metadata, unnecessary groups, long decimals and hidden elements.
PNG can be heavier for simple icons, but it is predictable for complex images. If the visual contains many colors, textures, screenshots or detailed raster content, PNG may be a better delivery format.
Scaling and visual quality
SVG stays sharp because it is vector-based. One file can serve small buttons, large hero graphics and high-density displays. PNG is resolution-dependent, so it needs enough pixels for the largest display size.
For crisp UI icons and logos, SVG usually wins. For screenshots and rendered artwork, PNG avoids surprises because the output is fixed.
Accessibility and SEO
Inline SVG can include a title, description and ARIA attributes. This is useful when the graphic carries meaning. Decorative SVGs should be hidden from assistive technology.
PNG accessibility depends on the surrounding HTML, usually the alt attribute on an img element.
For decorative PNGs, an empty alt value is usually the right choice.
Security and portability
SVG is markup, so unsafe SVGs can contain scripts, event handlers or external references. Always sanitize untrusted SVG files before previewing or publishing them.
PNG is a static raster image, which makes it simpler to share with clients, CMS systems, documents and tools that do not understand SVG markup well.
Final recommendation
Use SVG for logos, icons, UI symbols, line art, charts and simple illustrations that need to scale cleanly. Use PNG for screenshots, textured visuals, detailed transparent images and fixed-size exports.
In a real project, the best workflow is often both: keep SVG as the editable source, then export PNG when you need a fixed raster image.
Convert or clean your SVG
Use these tools when you need a smaller SVG source file or a clean PNG export.