Free tool

Image to WebP converter smaller images for a faster site.

Drop JPG, PNG, HEIC, AVIF, GIF, BMP or SVG files and download WebP versions that are a quarter to a third smaller at the same quality, transparency kept.

Image to WebP converter at a glance

content.win converts images with no queue and no limit on how many you convert, and opens HEIC and AVIF on every browser, not only the ones that ship a decoder.

Works with
JPG, PNG, WebP, HEIC and HEIF, AVIF, GIF, BMP, SVG. Several at once.
Comes back as
JPG, PNG or WebP, with a quality setting.
Runs
In your browser.
Limits
No daily limit and no cap on how many files. Images up to 24 megapixels.
Price
Free. No account, no watermark.

How to convert an image to WebP

  1. Drop the images in. A whole product catalogue or blog folder at once is fine.
  2. Pick a quality. 80 to 85 is the usual choice for web images: visibly identical, clearly smaller.
  3. Download and upload. Named after the originals, ready for WordPress, Shopify, Webflow or a plain img tag.

Why WebP for the web

Smaller pages
WebP is about 25 to 35 percent smaller than JPG at the same visual quality and far smaller than PNG for photos. On an image-heavy page that is the difference between a pass and a fail on the page-speed report.
Every browser shows it
Chrome, Safari, Firefox, Edge and every phone browser have supported WebP for years.
Transparency
WebP holds transparency, so it replaces PNG for logos and cut-outs at a fraction of the size.

When not to convert

  • Files you send to people rather than publish. A client, a printer or an older app may not open WebP; send JPG.
  • Images that go through a platform that converts anyway. Instagram, X and Facebook re-encode uploads, so give them the best JPG instead.
  • Masters you will keep editing. Keep the PNG or the original and convert the final version only.

Questions people ask

How much smaller is WebP?

Typically 25 to 35 percent smaller than JPG at the same visual quality, and often 50 to 80 percent smaller than a PNG photo. The tool shows both sizes.

Does WebP keep transparency?

Yes. A transparent PNG, SVG, GIF or AVIF comes out as a transparent WebP.

What quality should I use?

80 to 85 for web pages. Go to 90 for portfolio or product photography where every detail sells.

Can I convert a whole folder?

Yes. Drop all the files; each is converted with the same setting and one button downloads them all.