Convert Images to WebP

Reduce file size while maintaining visual quality.

Supported Formats

Input

PNGJPGJPEGWebP

Output

WebP

Why WebP?

Smaller Files

WebP images are typically 25–35% smaller than equivalent PNGs and JPGs.

Faster Websites

Smaller images mean faster page loads and lower bandwidth costs.

Better Mobile Performance

Reduced file sizes improve loading on mobile networks.

Improved SEO

Google recommends WebP for better Core Web Vitals scores.

How It Works

Upload a PNG, JPG, or WebP image
Choose a size preset (Thumb, Icon, Web, SNS, Large)
Adjust quality settings if needed
Preview the optimized result with file size comparison
Download the converted WebP file

Compression and quality tips

Use WebP for delivery, not archiving

Keep your original file if it is a source asset. Use ByteCut exports as lighter copies for pages, cards, and app screens.

Avoid unnecessary resizing

If the image is already smaller than the target, use contain-style output so the result is not stretched into a softer file.

Check transparent images separately

Transparent stickers and icons can become larger than expected if exported too large. Try a smaller preset before raising quality.

For PNG to WebP and JPG to WebP conversion

Use ByteCut when you need smaller web images without a full design tool. Convert common image formats to lightweight WebP and preview the file-size difference before downloading.

Useful for everyday web publishing

Convert PNG, JPG, JPEG, and WebP inputs in the browser.
Choose practical presets for thumbnails, icons, social images, and large exports.
Compare original and output sizes before saving.
Keep the original file untouched while exporting a separate optimized copy.

Getting the size down without visibly degrading the image

Quality 80 is a starting point, not a rule

For photographs and generated imagery, WebP around quality 80 usually removes most of the file weight before the eye notices anything. The images that break that rule are the ones carrying fine detail: small type inside a graphic, thin line art, screenshots of interfaces, and dense food texture. On those, compression artefacts show up as soft smearing around edges. If the subject contains readable text or hairline strokes, compare a higher quality export before settling.

When the converted file comes out larger

It happens more often than people expect, usually when the source is a small PNG of flat colour, or a JPEG that was already compressed hard. Re-encoding an image that has already lost detail does not recover any budget; it just adds a second pass of loss. ByteCut watches for this and steps down through lower quality candidates when a result would land unreasonably large next to the original, so the export you get is the one that actually saved something.

Resizing beats compressing

The single biggest win is usually not the codec but the dimensions. A 3000px photograph displayed in a 400px card is carrying roughly fifty times the pixels it needs, and no quality setting fixes that. Decide the largest size the image will ever be shown at, export near that, and let compression handle the remainder. This is why the presets are framed by use — menu thumbnail, icon, social, large — rather than by raw numbers.

Keep the original

An optimized export is a derivative, and each further round trip through a lossy encoder costs a little more detail. Treat the WebP as a delivery copy and keep the source file wherever you store assets. When you need a different size later, go back to the original rather than re-exporting the export.

Where WebP still gets refused

Browser support stopped being the issue years ago, but upload forms are a different story. Some marketplaces, print services, older CMS installs, and internal tools still accept only PNG or JPG. Check what the destination takes before converting a batch, because converting back from WebP to PNG will not restore the detail the first encode discarded.

WebP conversion FAQ

Can I convert PNG to WebP?

Yes. Upload a PNG and export a WebP file directly from the browser.

Does WebP reduce image size?

Often yes. Results vary by image, but WebP is commonly smaller than PNG or JPG for web use.

Can I resize and convert at the same time?

Yes. Pick a preset size, adjust quality, and export the optimized WebP result.

Will ByteCut replace my original file?

No. ByteCut creates a new exported file, so your original image remains unchanged on your device.

All processing runs locally in your browser. No files are uploaded.

Convert to WebP