HTML Table ↔ JSON

How to use

1. Choose a direction

   Select HTML to JSON or JSON to HTML.

2. Provide the table

   Paste text or open a local file of at most 5 MiB.

3. Inspect the result

   Review normalization notes and the safe preview, then copy or download the result.

Scope of the result

Input is capped at 5 MiB for both pasted text and files, and the table at 100,000 cells (columns × rows). Exceeding either is an error and nothing is converted. The JSON side accepts only normalized Table JSON version 1 (caption / header / alignments / rows) — an arbitrary JSON array cannot be converted.

Frequently asked questions

What happens to rowspan and colspan?

Their values repeat into every covered cell to form a rectangle. Associations remain, but the original merged presentation does not.

Can scripts or formatting in the HTML execute?

No. The converter extracts displayed cell text, and the preview is built safely from validated Table JSON.

Can I convert multiple tables at once?

No. Provide exactly one table element per input.