What Is an Image Compressor?
An image compressor reduces the file size of images by applying lossy or lossless compression algorithms. This optimization is essential for web performance, as images often account for the largest portion of page weight, directly affecting load times and user experience.
How to Use This Image Compressor
- Upload or drag and drop your image file.
- Adjust the compression quality level if available.
- Download the compressed image with reduced file size.
Key Concepts
Lossy compression (JPEG) permanently removes data to achieve smaller sizes, with adjustable quality. Lossless compression (PNG) reduces size without any data loss by finding more efficient encodings. Modern formats like WebP and AVIF offer superior compression ratios. For web use, images should balance visual quality against file size, typically targeting 80-200 KB per image.
Frequently Asked Questions
What quality setting should I use?
For JPEG, 75-85% quality offers the best balance. Below 70%, artifacts become visible. For web thumbnails, 60-70% is acceptable. PNG compression is lossless, so there is no quality setting.
Does compression affect image dimensions?
No. Compression reduces file size without changing the image width or height. To reduce dimensions, you need a resize or scaling tool.
Which image format provides the best compression?
WebP offers 25-35% smaller files than JPEG at equivalent quality. AVIF achieves even better compression but has less browser support. Use JPEG for maximum compatibility.