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Kontext FAL Data Formatter
Format two image sets for Flux Kontext training on fal.ai: rename to start/end pairs and download one ZIP.
Set 1 Images
Upload Set 1 Images
Drag and drop images here, or click to browse
Will be renamed to: filename_start.ext
Set 2 Images
Upload Set 2 Images
Drag and drop images here, or click to browse
Will be renamed to: filename_end.ext
About the Tool
This tool renames images from two sets and downloads them in a single folder.
Set 1 images are renamed to filename_start.ext
Set 2 images are renamed to filename_end.ext
How to Use
1. Upload images to Set 1 and/or Set 2
2. Set 1 images will be renamed to filename_start.ext
3. Set 2 images will be renamed to filename_end.ext
4. All renamed images will be downloaded in a single ZIP file
How it works
- Upload Set 1 (start) and Set 2 (end) images.
- Files are renamed to filename_start and filename_end.
- Download a single ZIP ready for fal.ai uploads.
Use cases
- Prepare fal.ai Kontext LoRA uploads without a script
- Standardize start/end naming across a dataset
- Bundle paired images into one training zip
- Hand off a clean package to a teammate who trains on fal
- Quickly rename mixed folders into Kontext conventions
Renaming and zipping run in your browser. Images are not uploaded to TheFluxTrain for this tool.
Frequently asked questions
Set 1 becomes filename_start.ext and Set 2 becomes filename_end.ext, then everything lands in one ZIP.
It follows fal-friendly Kontext naming. For broader pairing and QA, use the main Kontext Data Formatter.
You can upload one or both sets; pairs work best when matching base names exist in each set.
Yes. The Kontext FAL Data Formatter is free to use in the browser.