CSV to JSON Converter
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How to use CSV to JSON
- Choose your file (or drop it onto the page).
- Adjust the options shown.
- Select the action button and wait for it to finish.
- Review the result, then download it.
What to expect
A new file is created. Your original file is never modified.
- Duplicate column names are made unique (name, name_2…).
- Very large files may be slow in the browser.
Frequently asked questions
How do I convert CSV to JSON?
Choose your CSV file (or paste its text), check the preview, pick the options and select Convert. You can edit the JSON output before downloading it.
Is my data uploaded anywhere?
No. The data is read and processed by JavaScript in your browser. Only the website's own code and assets are downloaded.
Do I need to create an account?
No. Every tool works without sign-up or login.
Is it safe for confidential documents?
Files are processed locally in your browser and never uploaded. Close the tab or select Clear to release them from memory.