Image Compressor — Batch with Quality Control
Image Tools
Loading tool...
About This Tool
Free, private, serverless image compressor. Compress multiple images with quality control, max-width resize, and format conversion (WebP, JPEG, PNG). Per-image savings percentage. No data leaves your browser — 100% client-side.
How to Use
- Drop images or click to browse.
- Adjust quality (10-100%).
- Set max width for automatic downscaling.
- Choose output format (WebP recommended).
- Click Compress All.
- Download each compressed image.
Frequently Asked Questions
How much can it compress?
Typical savings range from 30-80% depending on the original format, quality setting, and output format. WebP generally provides the best compression ratios.
Which output format should I use?
WebP for best compression (recommended for web). JPEG for universal compatibility. PNG for lossless quality when needed.
Does max width affect quality?
The max width setting automatically downscales oversized images while maintaining aspect ratio. Combined with quality control, this maximizes file size reduction.
Is my data private?
Absolutely. All compression happens locally in your browser using the HTML5 Canvas API. No images are uploaded to any server.
Guides & Tutorials
In-depth guides for every tool. Learn how to process your data privately, for free, right in your browser.
Read more