output format
JPEG
Save ShareX captures as JPEG — when to use this format, quality and file size comparison, and how to set it as your default output.
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JPG Format in ShareX
JPG (JPEG) is a lossy compressed image format ideal for photographs and complex images where file size is more important than perfect quality.
Why Use JPG
- Smaller file sizes — Typically 50-80% smaller than PNG for photos
- Universal compatibility — The most widely supported image format
- Good for photos — Lossy compression is less noticeable on photographic content
- Adjustable quality — Control the trade-off between quality and file size
Limitations for Screenshots
JPG uses lossy compression, which means:
- Text becomes blurry — Fine text and UI elements show compression artifacts
- No transparency — JPG does not support alpha channels
- Generation loss — Re-saving a JPG multiple times degrades quality further
ShareX JPG Settings
Configure JPG output in Task Settings → Image:
- Quality level (0-100) — Higher values mean better quality but larger files
- Recommended: 85-95 for screenshots, 70-85 for photo sharing
Best Use Cases
- Sharing photo-heavy screenshots via email or messaging
- Reducing file size when PNG is too large
- Quick sharing where perfect quality is not required
For most ShareX screenshots, PNG is recommended. Use JPG when you need significantly smaller files and can accept some quality loss.
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