Convert to WebP with smart quality-size balance, real-time preview, batch processing
All image processing is done locally in your browser via WebAssembly, ensuring privacy. Conversion supports custom quality, smart compression, batch processing, real-time before/after comparison, and one-click download to optimize image loading and transfer efficiency.
Why convert to WebP?
WebP is the mainstream lightweight image format, significantly smaller than JPG and PNG at equivalent quality, with faster loading and lower data usage. It supports transparency with excellent compatibility — nearly all browsers, websites, and apps display it perfectly. The top choice for web graphics, e-commerce images, and social media.
What is WebP?
WebP is a lightweight image format by Google, supporting lossy/lossless compression and transparency. It is ~25-35% smaller than JPG and ~26% smaller than PNG at equivalent quality. Fully supported by Chrome, Firefox, Safari, Edge, and major mobile browsers, it is the mainstream choice for web and online images.
Why compress WebP?
Some original WebP files are still large, consuming storage and data, slowing page loads, and hitting platform upload limits. Moderate compression reduces file size significantly with no visible quality change, enabling faster uploads and smoother loading.
How does WebP compression work?
WebP is based on VP8 intra-frame coding. Lossy mode compresses image blocks through predictive and transform coding, then outputs via boolean entropy coding. Lossless mode uses inverse transforms and color caching for fully reversible compression. Quantization parameters can be adjusted to control compression strength, achieving high compression ratios while preserving quality and transparency.
Choose Quality Level?
Use Case Quality Level Compression Ratio Notes HD posters, photography, premium assets 90-100 10-30% Maximum clarity, full detail, virtually no compression loss Web graphics, e-commerce, social sharing 75-89 40-60% Natural quality, moderate size, best value for daily use Homepage thumbnails, list icons, content previews 60-74 60-80% Stronger compression, compact size, meets standard display needs Batch storage, low-bandwidth, minimal display Below 60 80%+ Minimal file size, ideal for fast loading and bulk storage Privacy & Security?
No registration required. All processing is done locally in your browser via WebAssembly. Images are never uploaded to the cloud, collected, or stored. Your privacy is fully protected.
How to Use?
1Adjust QualityAuto by default, or set a custom quality value2Add FilesSelect, select all, or drag and drop to convert/compress3DoneClick thumbnails to compare before/after4SaveSave individual images or download all