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JSON to HTML Table Converter

Convert JSON arrays into clean, sortable HTML tables instantly. Features search, pagination, and code export. Free developer tool. No plugins required.

User Rating 0.0 ★★★★★
Total Usage 0 times
Category JSON Tools

Input JSON

📂 Drag & Drop JSON file or Click to Upload
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Table Preview

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About

Manually coding HTML tables is a tedious, error-prone process, especially when dealing with large datasets. A single missing </td> tag can break an entire layout. This tool eliminates that risk by programmatically parsing your JSON data and generating compliant, semantic HTML markup instantly.

We use a client-side parsing engine that handles the complexity of mapping keys to columns. Whether you have a simple list or a complex array of objects, the tool normalizes the data structure. It operates with O(n) complexity during the column discovery phase to ensure every unique key is represented in the table header, preventing data loss in irregular datasets.

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Formulas

The tool uses a standard pagination algorithm to slice the dataset for display, ensuring the browser DOM remains responsive even with thousands of records.

Istart = (Pcurrent - 1) × Rlimit

Where I is the data index, P is the active page number, and R is the rows-per-page limit. The sorting logic uses a localized comparator:

compare(a, b) = a.localeCompare(b, undefined, {
numeric: TRUE
)

Reference Data

Tag / AttributeDescriptionDefault Behavior
<table>Container for tabular dataBlock display
<thead>Table Header GroupContains column titles
<tbody>Table Body GroupContains primary data
<tr>Table RowHorizontal row of cells
<th>Header CellBold text, centered
<td>Standard Data CellRegular text, left-aligned
colspanAttribute: Spans multiple cols1
rowspanAttribute: Spans multiple rows1
scopeA11y: Defines header associationcol or row

Frequently Asked Questions

Yes. If a cell contains a nested object or array, the tool currently stringifies it (converts it to a text representation) so it fits inside a single table cell. It does not create nested tables to maintain clean, flat HTML output.
No. All processing happens 100% within your browser using native JavaScript. Your data never leaves your device, ensuring privacy and security for sensitive datasets.
The generator produces "pure" semantic HTML. This is intentional. It allows the table to inherit your website's existing CSS framework (like Bootstrap or Tailwind) without conflict. We provide a basic CSS snippet you can copy if you need immediate styling.
The tool performs a "Union" operation on all keys found in the dataset. If Row A has keys {id, name} and Row B has {id, email}, the resulting table will have three columns: {id, name, email}. Empty cells are rendered for missing data.