Files & formats guide
Best image format for websites
By Waleed Sheeraz, independent operator of A2Z Edit · Updated 2026-09-09
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.
A default stack
Photos: WebP with JPG fallback. Logos: SVG or PNG. Do not HEIC on the public web. AVIF only if you test the browsers you actually support.
Keep a master. Strip metadata on public copies. Do not re-save JPEG from JPEG in the CMS every week.
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.
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