Compress images online for free without losing quality
Shrink large photos, screenshots, and graphics to lightweight files that load fast and fit strict upload portals. ToolCrix compresses JPG, PNG, and WebP images directly on your device using hardware-accelerated Canvas — your photos are never sent across the internet, keeping your private pictures 100% secure.
How to compress images
- Drag and drop your pictures into the box above (supports multiple files for batch compression).
- Adjust the quality slider (75–85% is the recommended sweet spot for invisible quality loss).
- Optionally set maximum pixel dimensions to downscale ultra-large camera photos.
- Download your optimized images individually or get the entire batch as a single ZIP file.
Frequently asked questions
Does compressing images affect visual quality? At 75–85% quality, the visual difference is virtually imperceptible to the human eye, but the file size decreases by 60–85%. For PNG graphics with transparency, converting to WebP produces identical sharpness at a fraction of the weight.
How do I compress an image to a specific size (e.g., under 100KB or 200KB)? If your original photo is several megabytes, first scale down the pixel dimensions (e.g., max width 1200px), then lower the quality slider to 75%. This immediately brings high-resolution smartphone photos below portal limits.
Are my images stored or viewed by anyone? No — ToolCrix operates 100% client-side in your browser. No files are uploaded to our servers, and no copies are retained.