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Optimize WebP.

Achieve the best web performance by reducing your WebP file size to the minimum.

Drop your images here
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PNG · WEBP · HEIC · AVIF · GIF · SVGMax. 50 MB per file
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Local processing

Your images never leave your browser.

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WebAssembly Engine

Ultra-fast compression with no quality loss.

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Unlimited

Free with zero restrictions.
Tool / Compression

Compress WebP Online Free: Optimize Your Images for Web

Optimize WebP images and further reduce their size without losing visual quality. Our compressor removes unnecessary metadata, improves encoding, and allows you to adjust the resolution or change the output format if needed. Ideal for speeding up websites and improving loading performance.

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How to reduce WebP image size?

01

Upload WebP

Drag and drop or select the WebP files you want to optimize.

02

Configure quality

Adjust the compression to find the best balance for your needs.

03

Download

Get your optimized WebP images ready to use instantly.

FORMATS

Explore Other Image Formats

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POPULAR
Compress JPG
FIDELITY
Compress PNG
ANIMATION
Compress GIF
Use cases

What Can You Use WebP Optimization For?

Although WebP is already efficient, optimizing it further has concrete benefits for different uses.

Websites & SEO

Improve your Core Web Vitals (LCP, FID) and Google ranking with images that load faster without losing quality.

Mobile Apps

Reduce your users' mobile data consumption and improve experience on slow or limited connections.

E-commerce & Catalogs

Catalogs with hundreds of products load much faster, reducing abandonment and increasing conversions.

Blogs & Media

Articles with optimized images have better time on page and lower bounce rate, improving SEO metrics.

FAQ

Frequently Asked Questions: WebP Optimization for Web

01 Isn't WebP already a lightweight format? Why compress it further? +
WebP is more efficient than JPG and PNG, but that doesn't guarantee your file is fully optimized. Many tools and plugins export it with higher quality than necessary, and re-compressing typically cuts an extra 10% to 30%. Metadata (EXIF, color profiles) can also be stripped, though it only takes up a few dozen KB. If your WebP is already well-optimized, the margin will be small.
02 Does compressing WebP images help my website's SEO? +
It can help indirectly. Lighter images improve page loading speed and, if an image is the main visual element on the page, also improve LCP (Largest Contentful Paint), a key Core Web Vitals metric considered by Google. It isn't a direct shortcut to ranking higher, but it does contribute to a better user experience and lower bounce rates.
03 Is WebP compatible with all browsers? +
Practically all of them: over 95% of browsers in use support it, including Chrome, Edge, Firefox, Safari, and modern mobile browsers. Only very outdated browsers, like Internet Explorer, cannot open it. Where it can still cause friction is with software and third-party platforms: legacy image editors, some email clients, or platforms that don't accept WebP uploads. In those cases, keep a backup copy in JPG or PNG.
04 Does WebP support transparency like PNG? +
Yes, WebP supports full alpha channel transparency in both lossy and lossless modes. In lossless mode, Google estimates files are about 26% smaller than PNG, and with lossy transparency the savings can be even higher at the cost of slight detail loss. It is an excellent choice for logos, icons, and graphics with transparent backgrounds.
05 Should I use WebP, JPG, or AVIF? +
For web photos, WebP usually weighs between 25% and 35% less than JPG with similar visual quality, and opens in nearly any browser. AVIF compresses even more (around 20% smaller than WebP) and enjoys broad support, though it takes longer to encode. A common strategy is serving AVIF with WebP as a fallback using the <picture> tag. Reserve JPG for when you need maximum universal compatibility, like emailing photos or uploading to platforms that don't accept WebP.
Notes

How Does WebP Image Compression Work?

WebP, developed by Google, features two modes. The lossy mode is based on the VP8 video codec: it predicts each block from neighboring pixels and encodes only the difference, which is then quantized, discarding data. The lossless mode uses spatial transformations and entropy coding to reconstruct the exact original image. Additionally, WebP supports alpha transparency and animations.

In a lossy WebP, savings come from re-encoding with a tighter quality target. In a lossless one, from finding a more efficient encoding without modifying pixel values. Metadata (EXIF, XMP, color profiles) only weighs a few dozen KB, though stripping it improves privacy. Because each lossy re-compression accumulates small differences, it is best to compress only once directly from the original source file.

OptimizeImg applies either approach depending on the file type and strips unnecessary metadata. Typical savings range from 10% to 30%, and are smaller on already optimized WebP files.

More

Other tools

Format

Convert Format

Convert between JPG, PNG, WebP, AVIF and more formats.

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Dimensions

Resize Image

Change photo dimensions by pixels or percentage.

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Framing

Crop Image

Crop areas of your image to refine composition.

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Privacy

Remove Metadata

Delete EXIF and GPS camera data to protect privacy.

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