CrashBench

Compression stress: JPEG artefacts and WhatsApp recompression

The Compression-stress preset reproduces what real life does to images: WhatsApp recompression, downscale, JPEG blocking. These artefacts routinely fool models trained on clean images.

How it works

flux-schnell1 creditWhatsApp compressionDownscale
flux-schnellcompression-stresscompressdownscale

How it works

Most photos that reach production have been through one or two messengers. Testing on clean images overstates real model performance.

Every operation runs on sharp, no GPU: zero credit cost, instant result. Stack several compression passes to simulate the worst case.

Key points

  • WhatsApp recompression, downscale, adjustable JPEG quality.
  • Free and instant: this preset consumes no generative credit.
  • Exposes artefact fragility that clean datasets hide.