JSONLify–JSONL Editor 4 GPT Fine-tuning
Edit and format JSONL datasets for GPT training instantly
What it does
JSONLify is the first online editor built just for GPT fine-tuning. It validates your data against OpenAI’s format, so no more hidden errors. Upload, edit, and export prompt-completion pairs — all in your browser.
Does a similar job
all alternatives →- JSONL(JSON Lines) Editor for OpenAIFeb 2026 · jsonlify.com · ▲3
Visual editor for GPT fine-tuning datasets
- GJGPT-JSON – Structured and typehinted GPT responses in Python2023 · github.com · ▲174
Hey HN, I've been using GPT a lot lately in some side projects around data generation and benchmarking. During the course of prompt tuning I ended up with a pretty complicated request: the value that I was looking for, an explanation, a criticism, etc. JSON was the most natural output format for this but results would often be broken, have wrong types, or contain missing fields. There's been some positive movement in this space, like with jsonformer (https://github.com/1rgs/jsonformer) the other day. But nothing that was plug and play with GPT. This library consolidates…
- ICI coded my own JSON translation tool to easily localize my side project2024 · quicklang.app · ▲43
Hi HN, I’m Joan, the developer of Quicklang. I made this app to easily translate and keep in sync all my localization JSON files for my side projects. While searching online for a similar tool, I only found enterprise solutions that do not allow direct editing of JSON files. I used to use ChatGPT to translate the JSON translation file changes before coding Quicklang. However, I realized that ChatGPT only allows you to input short content for translation into another language (even if you provide a .json file), and each time I had to request translations for one language at a time. So, I…
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