Convert TXT to JSON Online

Free online TXT to JSON converter - no upload, no signup

Paste text or choose a .txt file, pick how it is structured, and get JSON - all in your browser.

Delimited text, key=value logs, one value per line, JSON Lines, or extract fields with a regular expression.

How to Convert TXT to JSON (3 Steps)

1. Paste your text or choose a .txt file. Use the box above (up to 10M); the text stays in your browser.
2. Pick the structure and press Convert. Auto-detect handles most files - delimited, key=value, one value per line or JSON Lines.
3. Download the JSON. Save the generated .json file. The data never leaves your computer.

Online vs App

Same job, two ways — pick the one that fits your file:

In short: this page is best for a quick, small file. For large files or batch jobs, use the DataFileConverter desktop app — it also ships a command line for scripts and scheduled runs.

What to Know About TXT to JSON

• A plain .txt file has no schema, so the tool has to be told how rows are shaped - that is what the structure selector is for.
• Delimited treats the first line as the header and turns every following line into a JSON object.
• Quoted fields, escaped quotes and delimiters inside quotes are handled correctly.
• Extract runs a regular expression over the whole text; each capture group becomes a field.
• Conversion runs locally with JavaScript - your text is never uploaded to a server.

Frequently Asked Questions

Is this TXT to JSON converter free?

Yes. The online converter is completely free and needs no account or email.

Is my text uploaded to a server?

No. The conversion runs entirely in your browser, so your text never leaves your device.

What kinds of TXT can it read?

Delimited text (comma, tab, pipe or semicolon), key=value or key: value text, one value per line, JSON Lines, and arbitrary text you extract fields from with a regular expression.

What if my TXT has no delimiter?

Use the Lines mode to get a JSON array of the lines, or the Extract mode to pull matching fields out of the text with a regular expression.

Related Tools

CSV to JSON | Excel to JSON | XML to JSON | SQL to JSON | JSON to CSV | Merge text files

Need bigger files or batch conversion?

If this service cannot convert your data correctly, or your files are big than 10M, or you want a batch conversion, you can use Data File Converter to Convert TXT to JSON Offline.

Want to stay in the browser? Subscribe (from $5/month) to raise the online limits.

If you have any question or suggestion, please contact us.