Benchmark Lab · format-ladder-v1
The numbers, with receipts.
Every result below comes from the checked-in source, settings, and runtime shown on this page. Download the raw data or reproduce it locally.
- Last verified
- 2026-08-30
- Runtime
- Sharp 0.35.3
Format ladder
JPEG · quality 82, progressive, mozjpeg49.7 KB
WebP · quality 80, effort 637.2 KB
AVIF · quality 5824.0 KB
Raw results
Exact bytes and encoders
| Format | Bytes | Settings | Encoder |
|---|---|---|---|
| JPEG | 50916 | quality 82, progressive, mozjpeg | mozjpeg 0826579 |
| WebP | 38096 | quality 80, effort 6 | libwebp 1.6.0 |
| AVIF | 24538 | quality 58 | libaom 3.14.1 via libheif 1.23.1 |
Method
One source is resized to 1000 px wide, then encoded once at practical web settings. Outputs were visually spot-checked at 100%; they are useful operating points, not a claim of mathematically identical perceptual quality.
Corpus provenance
- SHA-256
- 50b5a5a9bbceec6f0e284361612a250bc756ebb37aed719b85273118680523c2
- Source dimensions
- 1200 × 630
Reproduce
Run the same benchmark
Clone the repository, install its locked dependencies, then run:
npm ci
npm run benchmark