JSONL Formatter

Format or minify a JSONL file.

Processed locally in your browser. Nothing you paste is sent anywhere.

Overview

Formats each line of a JSONL file for readability, or minifies it back to compact one-object-per-line form for upload.

How to use it

1Paste JSONL content.
2Choose Format (readable) or Minify (compact).
3Copy or download the result.

Related tools

All ai & llm tools

JSONL ValidatorValidate a JSONL (JSON Lines) file line by line.JSON FormatterFormat and beautify JSON with adjustable indentation.Token CounterCount exact tokens for GPT-4o and GPT-4 tokenizers.Context Window CalculatorSee how much of a model's context window your text uses.