Ecom Image Optimizer
PNG to WebP Converter
Convert PNG to WebP and cut file size dramatically, with transparency supported.
Last updated
PNG is lossless, which makes it enormous for anything photographic. Converting to WebP typically removes 60–90% of the file size with no difference a shopper would ever notice, and WebP still supports transparency, so cut-outs and logos survive the trip.
This is the single highest-impact change you can make to a slow product page. Lighter images improve Largest Contentful Paint, which Google measures directly as a Core Web Vital.
How to use it
- 1Drop your .png files onto the tool above.
- 2Output is already set to WebP at quality 82, a good default for product imagery.
- 3Adjust quality or set a target file size in the left panel if you want smaller files.
- 4Download the converted images, individually or as a ZIP.
Frequently asked questions
How much smaller is WebP than PNG?
For photographic content, expect 60–90% smaller. For flat graphics with few colours the saving is smaller but still meaningful. The tool shows the exact before-and-after size for every file.
Does WebP support transparency like PNG?
Yes. WebP has a full alpha channel, so transparent backgrounds convert cleanly. This is the main advantage of WebP over JPG for logos and product cut-outs.
Do all browsers support WebP?
Yes. Every current browser, including Safari and Edge, has supported WebP for years. It is safe to serve as your primary format on a storefront.
Should I use WebP or AVIF?
AVIF compresses noticeably better but encodes more slowly and has slightly narrower tooling support. WebP is the safer default for a product catalogue; AVIF is excellent for a small number of large hero banners.
Will converting to WebP hurt my SEO?
The opposite. Smaller images mean faster pages, and page speed feeds Core Web Vitals, which is a ranking signal. Just keep your alt text and filenames descriptive when you re-upload.