Image Compressor
Compress images in your browser — no uploads, fully private.
Drop images here or click to select
Supports JPEG, PNG, WebP, GIF — multiple files OK
What is Image Compression?
Image compression reduces file size by removing unnecessary data. Lossy formats like JPEG and WebP discard visual information the human eye can barely perceive, achieving 60–90% size reduction with minimal quality loss. Lossless compression (PNG) preserves every pixel but offers smaller savings. WebP, developed by Google, typically achieves 25–35% better compression than JPEG at equivalent quality, making it the preferred format for web use.
How to Use
- Choose your output format and quality level.
- Drag and drop images or click to select files.
- Review the compression results and download individually or all at once.
Frequently Asked Questions
Is my data sent to a server?
No. All compression happens entirely in your browser using the Canvas API. Your images never leave your device, making this tool completely private and secure.
What quality level should I use?
For photos on the web, 70–80% quality in WebP or JPEG is the sweet spot — significant file size reduction with nearly imperceptible quality loss. For print or archival, use 90%+ or PNG for lossless output.
Why is my PNG output larger than the original?
The browser's Canvas API re-encodes the image, and its PNG encoder may not be as optimized as dedicated tools. For best PNG compression, use a specialized tool. For size reduction, try WebP or JPEG instead.
