Question 1

How does the HTML table to JSON converter work?

Accepted Answer

Paste your HTML table markup into the input area. The tool parses it with the browser DOM parser, treats the first row (or the contents of thead) as the header, and produces a JSON array where each object represents one data row keyed by the header cell text.

Question 2

Does it handle tables without a thead section?

Accepted Answer

Yes. If there is no thead, the first tr is treated as the header row. You can also switch to positional mode (col1, col2, ...) if your table has no header row at all.

Question 3

What happens with empty or merged cells?

Accepted Answer

Empty cells become empty strings (or null, depending on the option). Colspan and rowspan are expanded so each logical cell gets the correct value repeated across the spanned positions.

Question 4

Is my HTML data sent to a server?

Accepted Answer

No. All parsing and conversion happens entirely in your browser using the built-in DOMParser. Nothing is uploaded, stored or transmitted. The tool works offline after the page loads.