Compress WebP Images Online — Free, No Upload
Modern image format developed by Google offering 25–35% smaller files than JPEG/PNG at equivalent visual quality. ImageSmith's free WebP compressor reduces file sizes by 60–90% using advanced lossy compression, entirely in your browser. WebP outperforms both JPEG and PNG in compression efficiency. It is the recommended output format for web-delivered images.
✓25–35% smaller than equivalent JPEG files
✓Supports both lossy and lossless compression modes
✓Full alpha channel transparency like PNG
✓Supported by all modern browsers (Chrome, Firefox, Safari, Edge)
Compress WebP to a Specific Size
Other Format Compressors
When to Use WebP
Use WebP for all modern web image delivery where performance and quality both matter.
WebP Compression FAQ
Upload your WebP image to ImageSmith, set your target file size or quality percentage, and click Compress. Your compressed WebP downloads instantly — no account and no watermark required.
WebP is a lossy format. ImageSmith's quality slider lets you precisely control the quality-to-size trade-off. Quality settings of 75–85 are imperceptible to most viewers while reducing file size by 60–80%.
WebP outperforms both JPEG and PNG in compression efficiency. It is the recommended output format for web-delivered images. ImageSmith uses a binary search algorithm to automatically find the highest quality setting that achieves your target file size.
Completely safe. ImageSmith runs entirely in your browser using the Canvas API. Your WebP images never leave your device — zero server uploads.
There is no file size limit. ImageSmith processes WebP images of any size locally in your browser. Larger images may take slightly longer, but there is no upload size cap imposed by our servers.