图像压缩器

Steps

1. Upload one or more JPG, PNG, WebP, AVIF, or BMP images.
2. Choose the output format, quality level, and optional maximum width.
3. Preview the compressed result and compare the new size with the original.
4. Download a single optimized image or a ZIP when processing a batch.

Example use case

A 2.4 MB blog cover JPG can often be reduced to 500-800 KB by exporting as WebP at medium-high quality while keeping the visible detail suitable for web publishing.

Settings explained

• Quality controls the balance between file size and visible detail. Lower values make smaller files but can add compression artifacts.
• Max width is useful for large camera photos that only need to appear in a website, email, or social post.
• Output format matters: WebP is usually smaller for web use, while PNG is better when sharp transparency is required.

Limitations

• Very large images depend on available browser memory, especially on mobile devices.
• Animated formats may be flattened or processed as a still image depending on browser support.
• Lossy compression cannot recover detail that has already been removed by a previous export.