JPG (JPEG) is a JPEG format commonly used for photos, social sharing, email attachments. This guide covers compatibility, compression, transparency, and conversion choices.
| Feature | Support |
|---|---|
| Transparency | No |
| Animation | No |
| Layers | No |
| Primary uses | photos, social sharing, email attachments |
Extension
.jpg
MIME type
image/jpeg
Family
JPEG
Compression
lossy
Browser support
universal
Small photographic files
Broad software support
Adjustable quality
No alpha transparency
Repeated saves can add artifacts
Poor fit for sharp UI graphics
JPG is the ImageHQ reference page for JPEG. It explains where the format works well, what tradeoffs to expect, and how to choose between JPG and related formats in production image workflows.
Use JPG when the workflow values photos, social sharing, email attachments. This is the practical fit that matters before tuning compression or conversion settings.
- photos
- social sharing
- email attachments
The main advantages of JPG are predictable in real projects: small photographic files, broad software support, adjustable quality.
- Small photographic files
- Broad software support
- Adjustable quality
JPG is not always the best delivery choice. Watch for no alpha transparency, repeated saves can add artifacts, poor fit for sharp ui graphics before using it as a default.
- No alpha transparency
- Repeated saves can add artifacts
- Poor fit for sharp UI graphics
JPG uses lossy compression behavior. That affects file size, editability, transparency, and whether repeated export cycles can visibly change the image.
Convert JPG files when a recipient, browser, archive, or editing tool needs a different balance of compatibility, transparency, file size, or preservation.
JPG is web-ready when browser support and file size match the use case. Compare it with WebP, AVIF, PNG, and JPG before choosing a default.
JPG transparency support: no. Use PNG, WebP, AVIF, SVG, or PSD when alpha transparency is required.