WEBP Compressor
Compress WEBP images by adjusting quality. Private and browser-only, no upload.
🖼️
Drop WEBP files here or
WEBP files only. Files never leave your browser.
WEBP Compressor is a browser-based tool that reduces the file size of WEBP images by adjusting the lossy quality level. WEBP is a modern image format designed for the web, offering efficient compression at good visual quality. This tool lets you fine-tune that quality-to-size tradeoff without uploading your files anywhere — all processing happens in your browser.
Tool interface
The interface is direct and straightforward:
- A drag-and-drop upload area for one or multiple WEBP files
- A quality slider (1–100%) to control compression strength
- A file list showing each filename and its original size
- Live size comparison after compression (original → compressed, savings %)
- A
Compress & Downloadbutton to process and save all files - A
Clearoption to reset and start over
For multiple files, the output is packaged into a single ZIP archive.
Tool description
WEBP Compressor uses the browser's Canvas API to decode each WEBP image and re-encode it at the quality level you specify. Because WEBP already uses efficient compression, the potential size reduction depends on the quality level the original file was encoded at. Files created with near-maximum quality have more room to shrink; files already encoded at medium-to-low quality may not reduce noticeably.
WEBP compression is lossy in this tool. Lower quality settings produce smaller files but may introduce visible artifacts in detailed or high-contrast areas. For web images, values between 70–85% typically maintain acceptable visual quality while achieving meaningful file size savings.
If the compressed result is larger than the original, the tool returns the original file unchanged with an "already optimized" notice.
Some practical use cases:
- Re-compressing WEBP exports from design tools that default to high quality
- Reducing WEBP image sizes before uploading to a CMS or static site
- Preparing WEBP assets for performance-sensitive landing pages
- Batch-reducing WEBP files for a web project before deployment
- Trimming WEBP files exported from video frames or screen recordings
How to use
- Drop WEBP files onto the upload area, or click
Browseto select them. - Adjust the quality slider — 80% is a good starting point for most web images.
- Click
Compress & Downloadto process the files. - Review the size comparison shown next to each file name.
- Single files download directly; multiple files are packaged as a ZIP archive.
Tip: WEBP files that are already highly compressed (e.g., saved at 70–80% quality by another tool) may show little or no reduction. The tool returns the original in those cases.
FAQ
Only WEBP files are accepted?
Yes. This tool works exclusively with WEBP images. For JPEG or PNG compression, use the dedicated JPG Compressor or PNG Compressor.
How does WEBP compression work here?
The tool uses the Canvas API with a WEBP output type and the quality value you set. It decodes the original image, redraws it at full resolution, and re-encodes it as WEBP at the specified quality.
Is WEBP compression lossy?
Yes, in this tool. Lossy WEBP compression consistently achieves the smallest file sizes. It is the standard mode used for web images.
Can I compress multiple WEBP files at once?
Yes. Drop or select multiple files and all of them will be processed together, with the results saved as a ZIP archive.
Are my images uploaded to a server?
No. All processing happens locally in your browser. Your WEBP files are never sent anywhere.
Why does it show "already optimized"?
When re-encoding at your chosen quality setting produces a file larger than the original, the tool returns the original unchanged. This is common with WEBP files already encoded at or below the selected quality level.