Best Image Format for Websites
Describe your website image and get a practical recommendation across AVIF, WebP, JPG, PNG, SVG, and GIF.
Choose a web image format
Choose formats by website content
Fotos
Use AVIF or WebP for efficient delivery, with JPG when maximum workflow compatibility matters.
Logos and icons
Prefer SVG for simple vector artwork that must stay sharp at every size.
Screenshots and graphics
Use PNG for lossless sharpness or WebP when smaller files are the priority.
Website image format comparison
| Format | Best use | Transparency | Primary tradeoff |
|---|---|---|---|
| AVIF | Efficient modern photos | Ja | Encoding and legacy workflows |
| WebP | General web images | Ja | Some older software |
| JPG | Compatible photos | Ingen | Lossy artifacts |
| PNG | Screenshots and raster graphics | Ja | Large photo files |
| Svg | Logos and simple vectors | Ja | Not for ordinary photos |
Hvordan det virker
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1
Enter your requirements
Provide file sizes or choose the website image characteristics.
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2
Review the result
Read the calculated savings or recommended format and rationale.
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Download the decision
Save the result for a content or optimization workflow.
A modern website image strategy
Keep source files separate from delivery files. Use responsive dimensions, set width and height attributes to prevent layout shifts, and choose a format that matches the content. WebP is a dependable general default; AVIF can improve photo compression; SVG is ideal for simple vectors.
Ofte stillede spørgsmål
What is the best general image format for websites?
WebP is a strong general default because it supports photos, graphics, transparency, and efficient compression.
Is AVIF better than WebP?
AVIF can be smaller for photographs, but WebP often has simpler encoding and broader workflow support.
Should website logos be PNG or SVG?
Use SVG for simple vector logos when possible; use PNG or WebP for raster artwork.
Best Image Format for Websites last reviewed: Jul 18, 2026.