Online Image Compressor
Compress JPEG, PNG, WebP & AVIF — entirely in your browser. Zero uploads.
Drop images here
or click to browse files
Lightning Fast
Local processing means zero wait times. No upload queues. Instant results.
100% Private
Your photos never touch our servers. Everything stays on your device.
High Quality
Perfectly balances file size reduction and visual fidelity every time.
How to Compress Images Online
Upload Files
Drag and drop your images into the dropzone or click to browse. Supports batch uploads of up to 20 images at once.
Auto Optimization
Our WASM compression engine instantly shrinks JPEG, PNG, WebP and AVIF files while maintaining HD visual quality.
Download & Save
Click to download individual files or grab them all as a ZIP archive. Fast, private, and completely free.
Frequently Asked Questions
Are my images uploaded to a server?
No. ImgCompress.io processes everything locally within your browser. Your images never leave your device, ensuring complete privacy.
Is there a file size limit?
Yes — 50MB per individual image file to prevent browser memory issues. You can upload up to 20 images at once.
What image formats are supported?
We support reading and writing JPEG, PNG, WebP, and AVIF formats. You can also bulk-convert between formats.
Is this tool free to use?
Yes! ImgCompress.io is completely free. Our goal is a fast, private, secure image optimizer that runs entirely on your device.