Free Web.P Image Optimizer

Convert JPG and PNG to WebP for free, right in your browser

Drag & drop, click or paste (Ctrl+V)

Final output preview

—→—

SEO file name

Width (px)

Height (Auto)

Crop height

Target height (px)

Anchor (part to keep)

50%

WebP quality 65%

Keep transparency

Adjustments

Brightness Advanced

Shadows 0

Midtones 0

Highlights 0

Contrast 0

Saturation 0

A free WebP converter that never uploads your images

Free WebP Image Optimizer converts JPEG and PNG images to WebP directly in your browser. The image is read, cropped, resized and encoded on your own computer or phone: nothing is sent to a server, there is no account and no watermark. It is made for everyone who publishes images on the web: site owners, bloggers, web designers, online shops and community managers.

How it works

Import: drop an image in the zone above, click it to browse your files, or paste an image with Ctrl+V.

Frame: move the crop box, set the output width (1200 px by default) and, if needed, a target height with the part of the image to keep (top, middle or bottom).

Compress: choose the WebP quality (65 % by default). The preview shows the estimated final weight and the percentage saved, updated as you change the settings.

Download: check the SEO file name (pre-filled from the original name, in lowercase with dashes) and download your WebP.

Measured examples

Measured with this tool on 3 November 2026 in Chrome, with the default settings (1200 px wide, quality 65 %):

Image	Original	WebP	Saved
Camera photo, JPEG 3456 × 4608 px	7.62 MB	53.0 KB	−99 %
Product photo on white, JPEG 5568 × 3712 px	8.42 MB	13.4 KB	−99 %
Illustration with transparency, PNG 954 × 713 px	1.22 MB	38.5 KB	−97 %

On photos, most of the saving comes from resizing them to the width they are actually displayed at. Kept at its full 3456 × 4608 px size, the same camera photo still drops from 7.62 MB to 366.5 KB (−95 %). Results vary with each image and with the browser's WebP encoder.

Tips for lighter images

Use the display width: 1200 px suits most content images, 1920 px a full-width banner. See how to resize and crop for the web.

Adjust the quality: 65 % is a good default. Go up to 80 % for photos with fine details (the camera photo above weighs 100.1 KB at 80 %), down to 50 % for backgrounds.

Transparency only when needed: keep it for logos and cut-out products, untick it otherwise to get a white background. More in PNG to WebP.

Name and describe: give the file a descriptive name with dashes (red-leather-handbag.webp) and write an alt text when you add it to your page.

Frequently asked questions

Can I convert several images at once?

No. The tool processes one image at a time so that you can frame and check each one. Click “Process another image”, or drop a new file under the settings, to continue.

Which image formats can I import?

JPEG and PNG, as well as most other formats your browser can display, such as WebP. The output is always a WebP file.

Is there a file size limit?

The tool sets no limit. Since everything happens in your browser, very large images only depend on your device's memory: the 8.42 MB product photo in the table above was processed without any issue.