Compress any image, right in your browser
Free, privacy-first image compression. No account required, no files uploaded — everything runs locally on your device.
All tools
Compress to KB
Set an exact kilobyte target and let kiloready hit it with the best possible quality.
Social Media Resizer
Pre-configured profiles for Instagram, LinkedIn, YouTube, Twitter/X, Facebook and more.
Optimise for Website
Convert to WebP and hit your Core Web Vitals targets with a single click.
Form Upload Compression
Compress passport photos, IDs and scanned documents to meet portal limits.
Batch Compressor
Drop dozens of images at once and download them as a zip.
JPEG / PNG Compressor
Format-specific compression with granular quality control.
Crop Image
Crop with free-form or fixed ratios — 1:1, 4:5, 16:9, 9:16, 3:2. Live preview included.
Why kiloready?
100% local processing
All compression happens inside your browser using WebAssembly and Canvas APIs. Your images never leave your device.
Instant results
WebAssembly-powered codecs deliver near-native speed. No waiting for a server, no queue.
Exact-KB targeting
Binary-search compression loop guarantees your output fits inside the limit you specify.