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How to Compress Images
The Image Compressor reduces JPEG, PNG, and WebP file sizes in your browser — without uploading to any server.
- Drag and drop images or click to select files.
- Adjust the quality slider to balance file size and visual quality.
- Download the compressed images individually or as a batch.
How Image Compression Works
Lossy compression (JPEG, WebP) reduces file size by discarding visual information the human eye is less sensitive to — high-frequency detail and subtle colour variations. The quality slider controls how aggressively data is discarded. At 80% quality, most images look identical to the original but are 50–70% smaller. Lossless compression (PNG) reduces size without any quality loss by finding patterns in the pixel data.
Why Use Our Image Compressor?
- 100% browser-based — images never leave your device.
- Quality control — adjust the compression level with a slider.
- Batch processing — compress multiple images at once.
- Format support — JPEG, PNG, and WebP.
Frequently Asked Questions
Will compression reduce image quality?
At 70–80% quality, the difference is barely visible to the human eye. Lower quality settings produce smaller files with more visible artifacts. Use the preview to find your preferred balance.
What file formats are supported?
JPEG, PNG, and WebP. HEIC images are automatically converted before compression.
Is there a file size limit?
There is no hard limit, but very large images (20+ MP) may be slow on older devices. Most photos compress in under a second.
Are my images uploaded to a server?
No. Compression runs entirely in your browser. Your images never leave your device.