Understanding image quality settings is key to optimizing your website. Too much quality means large files and slow loading. Too little means ugly artifacts. Here's how to find the sweet spot.
JPEG quality typically ranges from 1-100 (or 0.1-1.0 in decimal). The relationship between quality and file size is not linear:
| Quality | File Size | Quality Loss | Best Use |
|---|---|---|---|
| 95-100% | 90-100% of original | Imperceptible | Print, archival |
| 85-94% | 60-80% of original | Usually imperceptible | Hero images, important photos |
| 75-84% | 40-55% of original | Varies by image | Standard web content |
| 65-74% | 25-35% of original | Often visible on close inspection | Thumbnails, previews |
| <65% | 10-20% of original | Clearly visible artifacts | Avoid for web |
Why 80% is often ideal:
Rule of Thumb:
If you can't see a difference between 80% and 100% quality when viewing the image at actual size, your setting is appropriate.
These large, prominent images should look their best. Higher quality is worth the extra bytes here.
Standard content images. 75% is usually the sweet spot - good quality, small files.
Customers want to see product details. Higher quality helps conversions.
Small images where details aren't critical. Lower quality saves significant space.
Often partially hidden by content, background images don't need maximum quality.
If you can't spot the difference at actual size, your quality setting is appropriate.
Use our compressor to test different quality levels and compare results.
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