PNG to WebP Converter

What this conversion does

The page requests WebP output at maximum quality 85%, with no initial size target or automatic target-driven shrinking. You can change those settings. A browser must be able to decode the input and encode WebP; displaying a WebP image does not prove it can create one.

WebP as a format supports both lossy and lossless encoding. This converter uses the browser quality-controlled encoding path and exposes no lossless WebP switch. Google’s WebP technical explanation describes the format’s different modes; format capabilities are broader than this interface’s options.

Compare one representative asset first

1. Keep the PNG source. Choose a sample containing the detail that matters, such as small text, a logo edge or a soft shadow.
2. Confirm WebP output and compress. If the browser reports unsupported encoding, try another supported environment or retain PNG.
3. Record the source and result byte counts. Inspect the slider at 100% and at the actual website display size.
4. Check transparent edges against both light and dark backgrounds, using your page or another viewer where needed.
5. Upload a test asset through the real content-management workflow and check its delivered URL and rendering before replacing a batch.

A result that is smaller in the compressor can still be resized or re-encoded by a CMS. Compare the delivered file too. Do not infer a guaranteed page-speed score or search-ranking improvement from changing a filename or format.

Size the asset for its display role

Choose dimensions from the actual layout and image variants you need, not a universal banner width. For example, a 600-CSS-pixel placement might use a 1,200-pixel source for a 2× density candidate. This is an illustrative choice, not a requirement for every device or a responsive-image implementation supplied by this tool.

If a 300,000-byte PNG becomes a 180,000-byte WebP, the saving is 40%. Ten such replacements would reduce those image bytes by 1,200,000 before other page changes. These arithmetic examples do not predict loading time, cache behaviour or quality for your assets.

Check transparency and fine detail

A transparent output does not make its picture lossless. Look for changes around lettering, hair, coloured outlines and shadows. Repeatedly converting the last lossy copy can add damage; create each trial from the source instead.

If the acceptable WebP is larger, keep the PNG when the delivery workflow allows it. Explicit format conversions are retained even when larger. Use PNG optimisation when you need a PNG delivery file or a comparison without lossy colour encoding.

Prepare a replacement safely

Check the CMS, email system or app that must accept the image, including any format and byte rules. The upload checker only verifies entered numeric and format conditions; it does not test your live website, CSS, alternative text or responsive image markup.

Animation is outside this converter’s scope, and hidden metadata is not preserved as an archival record. Keep an editable master and confirm filenames or references when replacing assets. For software that needs a different format, see WebP to JPG or PNG.

Related image tasks

• Full image compressor
• Compress Image to 100KB
• Compress PNG
• WebP to JPG or PNG