Reference
File Size Guide
How format and quality settings affect file size — and how to choose the right trade-off.
Typical sizes for a 1000 × 1000 px product cutout
| Format | Approx. size | Notes |
|---|---|---|
| PNG (lossless) | 200 – 600 KB | Depends on image complexity |
| WebP quality 80 | 40 – 120 KB | Recommended for web |
| AVIF quality 70 | 20 – 60 KB | Smallest, modern tools only |
| JPG quality 85 | 30 – 100 KB | No transparency |
Quality settings for WebP and AVIF
The quality slider controls compression aggressiveness. Higher = better quality, larger file.
| Quality | Use case |
|---|---|
| 90 – 100 | Near-lossless; source assets |
| 75 – 85 | Web publishing sweet spot |
| 60 – 74 | Smaller files, minor quality reduction |
| Below 60 | Visible artefacts — not recommended for cutouts |
Why PNG sizes vary
PNG uses lossless compression. The compressor encodes repeating patterns efficiently. A simple product on a white background compresses very well; a detailed fur or hair cutout with many unique pixel values compresses poorly.
Transparent areas (alpha = 0) still occupy file space in PNG. A tightly cropped cutout with minimal transparent border will be smaller than one with large transparent margins.
Recommendations by use case
- Photoshop / design source: PNG — lossless, universal
- E-commerce web images: WebP quality 80
- Amazon product upload: JPG quality 90 (white background required)
- Email: JPG — most email clients can't use transparency gracefully
- Modern web (performance-critical): AVIF quality 70