Files & formats guide
Best image format for websites
Updated 2026-08-25
Web performance cares about bytes and decode support.
Convert and compress with A2Z Edit, then serve modern formats where your audience can read them.
Do this on A2Z Edit
Open the Image Format Converters and follow the steps below.
Open Image Format ConvertersSteps
- Use WebP for many photos and UI assets when support is acceptable.
- Keep JPG as a widely understood fallback.
- Use PNG when you need simple transparency and lossless edges.
- Compress to the quality your design still accepts.
- Lazy-load large heroes in your site code.
Why it matters
Heavy images dominate page weight more often than fonts or scripts.
Tips
- Encode from masters, not from already-uploaded CMS files.
- Do not upload raw 12 MP phone photos to a blog.
- Strip EXIF to protect privacy and shave a little size.
Frequently asked questions
AVIF on every site?
Only with detection/fallbacks—support is growing but not universal.
SVG?
Great for logos and icons that are truly vector.
How to convert quickly?
Use Convert Image on A2Z Edit in your browser.
Related tools
Related guides
Best image format for transparencyUse PNG or WebP when you need alpha transparency—not JPG.JPG vs PNGChoose JPG for photos and PNG when you need sharper graphics or transparency.PNG vs WebPWhen to keep PNG versus switching graphics to WebP.JPG vs WebPCompare JPG and WebP for photo delivery on modern websites.
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