Browser tool
Convert Between CSV, JSON, and YAML Instantly
Paste structured data, detect common input formats, and export the format your pipeline needs without installing CLI tools.
0 bytes
CSV Options
JSON Options
Uses a safe subset (no anchors/tags).
Quick instructions
- 1
Paste or upload data
Drop your source data into the left pane or upload a file. The tool auto-detects the format.
- 2
Choose output format
Select JSON, CSV, or YAML. The preview updates immediately with formatted results.
- 3
Review validation messages
Fix any highlighted parsing issues, such as mismatched columns or invalid JSON syntax.
- 4
Export or copy
Download the converted file, copy it to your clipboard, or send it to another 404cache tool.
Examples & tips
Turn product data into YAML
Paste CSV exports from your commerce platform and convert them into structured YAML for CMS imports.
Create API fixtures
Import JSON, prettify it, and export to share as sample payloads with your engineering team.
Clean a dataset for machine learning
Convert YAML configuration into JSON, adjust formatting, and send it to your notebooks for training.
Useful details
- Combine the converter with the Regex Tester to clean data before exporting.
- Use the Robots & Sitemap Generator after converting URL lists to ensure search engines discover new pages.
About this tool
Mixing data formats is common when juggling analytics dashboards, APIs, and static site generators. Our converter bridges these worlds with a single interface.
Conversions happen locally, but the current dataset and settings are saved in this browser’s local storage. Share links include the dataset in the URL fragment.
Questions
- Is there a file size limit?
- The converter is optimised for typical web datasets. Very large files may impact performance; split them when necessary.
- Does the tool infer data types?
- Numeric and boolean values remain preserved during conversions. Strings with leading zeros stay intact.
- Can I change CSV delimiters?
- Yes. Switch between comma, semicolon, or tab delimiters before exporting.
- Is any data uploaded?
- Conversions are not uploaded for processing. Input and settings are saved in this browser’s local storage, and share links include them in the URL fragment.