Image WebP Compressor
Convert PNG/JPEG images to WebP format, resize dimensions, and compress file size right in your browser.
- Drag in a PNG or JPEG image, or select one from your device.
- Set target dimensions and a WebP quality level to balance file size against visual quality.
- Preview the before/after file size comparison in real time.
- Download the compressed WebP file — the original never leaves your browser.
All processing happens entirely in your browser. Your data never leaves your device.
Key Features
- Convert PNG and JPEG images to WebP format
- Adjustable quality slider for lossy compression (0–100%)
- Resize image dimensions while maintaining aspect ratio
- Real-time before/after file size comparison
- Batch processing support — convert multiple images at once
- 100% client-side — your images never leave your device
About Image WebP Compressor
WebP is a modern image format developed by Google that provides superior lossy and lossless compression compared to JPEG and PNG. On average, WebP images are 25–35% smaller than equivalent-quality JPEGs, which translates to faster page loads, lower bandwidth consumption, and better Core Web Vitals scores.
Image compression is essential for web performance. Google's PageSpeed Insights and Lighthouse audit tools specifically recommend serving images in next-gen formats like WebP. Converting your PNG and JPEG assets to WebP is one of the highest-impact optimizations you can make for site speed.
ForgeKit's Image WebP Compressor handles conversion and resizing entirely in your browser using the Canvas API. You control the quality slider to find the perfect balance between file size and visual fidelity, and you can preview the before-and-after comparison in real time before downloading.
Frequently Asked Questions
WebP is a modern image format by Google that produces smaller file sizes than JPEG and PNG at equivalent quality. It's supported by all major browsers and is recommended by Google PageSpeed for better web performance.
WebP lossy compression does reduce quality slightly, but at 80–90% quality settings the difference is virtually imperceptible to the human eye while achieving significant file size reduction.
No. All image processing happens entirely in your browser using the HTML5 Canvas API. Your files never leave your device.
This tool is designed for PNG/JPEG → WebP conversion. For the reverse, you can open a WebP file in most image editors and export as PNG or JPEG.
Yes. As of 2023, WebP is supported by all major browsers including Chrome, Firefox, Safari, Edge, and Opera.