Images · Best format for…

Best Image Format for Websites

Website images have one job: look sharp without slowing the page. The “best” format depends on whether the asset is a photo, UI graphic, logo, or icon — and how old your visitors’ browsers are.

Quick take: For modern websites, WebP or AVIF usually win on size. Keep JPG for maximum compatibility, PNG for UI/transparency, and SVG for logos that must scale.

WEBP AVIF JPG PNG SVG JPG → WEBP PNG → WEBP JPG → AVIF PNG → AVIF

Formats to consider

WEBP

Best default for most modern sites

Excellent size/quality with lossy and lossless modes plus alpha.

Pros

Smaller than JPG/PNG often
Alpha support
All modern browsers

Cons

Legacy browser fallbacks still needed for very old traffic

What is WEBP?WEBP hub

AVIF

Best compression when you can provide fallbacks

Often the smallest photo files using AV1 stills.

Pros

Outstanding photo compression
Alpha + HDR capable

Cons

Slower encodes
Need JPG/WebP fallbacks for older clients

What is AVIF?AVIF hub

JPG

Safest universal photo format

Still the compatibility baseline for photographs.

Pros

Works everywhere
Fast tooling

Cons

No transparency
Larger than WebP/AVIF at similar quality

What is JPG?JPG hub

PNG

Best for UI, screenshots, crisp graphics

Lossless with full alpha — heavy for photos.

Pros

Sharp text/UI
Full transparency

Cons

Large for photographs

What is PNG?PNG hub

SVG

Best for logos and icons

Vector graphics that stay sharp at any size.

Pros

Infinite scale
Tiny for simple shapes

Cons

Not for photos
Sanitize untrusted SVG

What is SVG?SVG hub

Recommendations by situation

Hero photos on a modern marketing site

Pick: AVIF (with WebP/JPG fallback) or WebP

Smallest bytes for continuous-tone photos without looking soft.

UI screenshots and product panels with text

Pick: PNG or lossless WebP

Keeps edges and type crisp; JPG will smear UI text.

Logo / wordmark / icons

Pick: SVG (PNG fallback)

Vectors stay sharp on retina and large displays.

You must support ancient browsers with one file

Pick: JPG (photos) or PNG (graphics)

Universal decode beats next-gen savings if you cannot ship fallbacks.

Transparent overlays and stickers

Pick: WebP or PNG

Need alpha; JPG cannot do transparency.

Convert now

Turn the recommendation into a file — every converter between these formats is linked below. Processing stays in your browser.

JPG → WEBP PNG → WEBP JPG → AVIF PNG → AVIF SVG → PNG PNG → JPG WEBP → JPG AVIF → JPG WEBP → PNG AVIF → PNG AVIF → WEBP Compress Image JPG → PNG Resize Image SVG → JPG SVG → WEBP WEBP → AVIF

All related converters (71)

3GP → WEBP AVI → WEBP AVIF → BMP AVIF → GIF AVIF → ICO AVIF → PDF AVIF → TIFF BMP → AVIF BMP → JPG BMP → PNG BMP → WEBP DOCX → JPG DOCX → JPG DOCX → PNG DOCX → PNG FLV → WEBP GIF → JPG GIF → PNG GIF → WEBP HEIC → AVIF HEIC → JPG HEIC → PNG HEIC → WEBP ICO → JPG ICO → PNG ICO → WEBP Images → PDF JPG → BMP JPG → Excel JPG → GIF JPG → ICO JPG → PDF JPG → Text JPG → TIFF JPG → Word M4V → WEBP MKV → WEBP MOV → WEBP MP4 → WEBP OGV → WEBP PDF → JPG PDF → PNG PNG → BMP PNG → Excel PNG → GIF PNG → ICO PNG → PDF PNG → Text PNG → TIFF PNG → Word PPTX → JPG PPTX → JPG PPTX → PNG PPTX → PNG SVG → BMP SVG → GIF SVG → ICO SVG → PDF SVG → TIFF TIFF → AVIF TIFF → JPG TIFF → PNG TIFF → WEBP WEBM → WEBP WEBP → BMP WEBP → GIF WEBP → ICO WEBP → PDF WEBP → Text WEBP → TIFF WMV → WEBP

Related comparisons

JPG vs WebP JPG vs AVIF PNG vs WebP PNG vs AVIF WebP vs AVIF SVG vs PNG

Related “best format” guides

Best Image Format for Photos Best Image Format for Logos Best Image Format for Small File Size Best Image Format for Transparent Backgrounds

FAQ

Is AVIF always better than WebP for websites?

Often for photos, not always for simple UI graphics — and encode time plus fallbacks matter. Test hero images visually.

Should I convert every PNG on my site to WebP?

Photos and heavy PNGs: yes. Tiny UI icons already small as PNG/SVG may not need it. Prefer SVG for logos.

Browse all best format guides or jump to every converter.