Data & Tables
HTML Table to JSON Converter
Convert HTML tables to JSON online. Extract table headers and rows into JSON objects locally in your browser.
Tool
Convert HTML tables to JSON online. Extract table headers and rows into JSON objects locally in your browser.
This tool runs in your browser. Your input is processed locally and is not uploaded.
About this Tool
Use this HTML Table to JSON Converter to turn table markup into structured JSON. Header cells can become object keys, body rows become records, and users can review generated field names before export. The tool focuses on semantic table elements and should warn when a visual layout cannot be represented as regular records.
Examples
- <table> <thead><tr><th>City</th><th>Quarter</th><th>Revenue</th></tr></thead> <tbody> <tr><td>Berlin</td><td>Q1</td><td>12800</td></tr> <tr><td>Paris</td><td>Q1</td><td>11450</td></tr> </tbody> </table>
Frequently Asked Questions
Is my HTML table markup uploaded to a server?
No. The tool parses, transforms, previews, and exports data locally in your browser without uploading your input.
How are header cells used?
Header cells should become JSON keys. If no header is present, the tool can create default keys and let the user rename them.
Can hidden page data be extracted?
No. The converter should process the table markup provided by the user, not fetch or execute page content.
How are data types detected?
Values can be inspected as strings first, then optionally detected as numbers, booleans, dates, or empty values. You can keep text mode when exact formatting matters.
What file sizes are practical in the browser?
Small and medium tables are the best fit. Very large files can use a lot of memory because parsing, previews, and exported results all live inside the browser tab.