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Kontext Data Formatter

Automatically group images for Flux Kontext model training and correct pairing mistakes before you export.

How it works

  1. Upload your image library.
  2. Review automatic groups and fix incorrect pairs.
  3. Export a training-ready package for Kontext finetuning.

Use cases

  • Prepare start/end pairs for Flux Kontext LoRA training
  • Fix mispaired images before a long training run
  • Organize messy photo dumps into training groups
  • QA dataset consistency with face and pixel cues
  • Export cleaner zips for local or cloud trainers

Formatting and pairing run in your browser. Your training images are not uploaded for this tool.

Frequently asked questions

Flux Kontext-style finetuning expects carefully paired images. This tool helps group, correct, and export those pairs.
A GPU can speed up some comparisons when available in the browser, but you can still use the formatter without one.
No. Use this formatter for general Kontext prep. If you train on fal.ai, also see the Kontext FAL Data Formatter.
Yes. The Kontext Data Formatter is free to use in the browser.