Large image files are one of the biggest causes of slow websites and full phone storage. But compressing images used to mean visibly degrading quality — not anymore.
The quality vs. size tradeoff
Modern compression algorithms like mozjpeg can reduce JPEG file sizes by 40–70% with no visible difference to the human eye. The key is choosing the right quality setting.
Recommended quality settings
For web images use 75–80%, for email attachments use 70–75%, for print use 90–95%, and for maximum compression use 60–65%.
How to compress with TechSixtus
- Open the **Compress Image** tool
- Upload your JPG, PNG, or WebP
- Choose a preset or fine-tune the quality slider
- Download your compressed image
PNG vs JPG compression
PNG files use lossless compression — ideal for images with text or sharp edges. JPG is better for photos. If you don't need transparency, converting PNG to JPG can save up to 80% in file size.