Choosing the right image format affects load speed, visual quality, and SEO. JPEG, PNG, and WEBP each shine in different scenarios. Use this breakdown to decide which format belongs in your production workflow.
JPEG
- Best for photos with gradients and complex detail.
- Supports millions of colors but no transparency.
- Use quality settings between 75-90 to balance fidelity with size.
- Avoid multiple saves; each recompression introduces artifacts.
PNG
- Lossless compression--perfect for UI, logos, illustrations, and screenshots.
- Supports alpha transparency for smooth edges.
- Files can be larger; run through optimizers like TinyPNG.
WEBP
- Created by Google; offers both lossy and lossless modes.
- Delivers ~30% smaller files compared to JPEG/PNG at similar quality.
- Supports transparency and animation.
- Browser support is excellent (Chrome, Edge, Firefox, Safari 16+). Provide JPG/PNG fallbacks for legacy needs.
Decision Matrix
- Marketing site hero: WEBP (with JPG fallback).
- Product UI screenshots: PNG or lossless WEBP.
- Email campaigns: Use JPEG for compatibility and smaller payloads.
- Logos & icons: SVG when possible, otherwise PNG.
Conversion Workflow
Use Squoosh to compare side-by-side. Export WEBP for modern browsers and keep the original format as a fallback. Automate via build tooling (Sharp, imagemin, Cloudinary) for production sites.
Integrate with uBlur
After choosing the format, open final assets in uBlur to blur sensitive info, add highlights, or label components before embedding them in documentation.