Quality Reducer
Drag & Drop your image here or click to browse
Lower quality means smaller file size but more artifacts.
Original
Reduced
The Optimization Guide: Understanding Lossy Compression
The Adiminium Quality Reducer gives you manual control over the "Lossy Compression" process. Unlike "Lossless" compression (which just rearranges data more efficiently), Lossy compression actually discards visual information to save space. The trick is to discard only the data the human eye is bad at seeing.
How JPEG Compression Works
JPEG divides images into 8x8 pixel blocks and looks for patterns. It aggressively simplifies color variations (chroma subsampling) because human eyes detect brightness (luma) better than color.
The Sweet Spot Guide
Where should you set the slider?
- 90-100% (High): "Archival Web". Hard to distinguish from original. Use for hero banners and portfolio photos. Size savings: ~50%.
- 70-85% (Medium): "The Sweet Spot". Minor artifacts visible only if you zoom in. Standard for e-commerce and blog posts. Size savings: ~80%.
- 50-65% (Low): "Utility". Visible artifacts (blockiness) around text and sharp edges. Good for thumbnails or background textures covered by dark overlays. Size savings: ~95%.
- 1-30% (Destructive): For artistic "glitch art" or extremely bandwidth-constrained environments.
Comparison Feature
The most dangerous part of compression is over-doing it. That's why we built the Real-Time
Comparator.
Don't trust the numbers. Trust your eyes. Slide the quality down until you just start to
see the image break apart, then slide it back up 5%.
Frequently Asked Questions
Does this work on PNGs?
PNG is a "Lossless" format, so it doesn't have a simple 1-100 quality slider in the same way. However, if you upload a PNG here, we intelligently convert it to a high-quality JPEG or WebP (depending on browser support) to allow you to reduce the file size significantly, as long as you don't need transparency.