JSON to HTML Converter
Render arbitrary JSON as nested HTML for display anywhere.
Written by Golam Rabbani, Founder & Lead Engineer
How to use this json to html converter
- Paste your JSON into the input textarea. Any valid JSON value (object, array, string, number, boolean, null) is accepted.
- Pick an output style: nested <ul> / <li> for hierarchical lists, or definition list <dl> for key-value pairs.
- Click Generate HTML to convert.
- Click Copy HTML to grab the result, or Reset to clear.
About this json to html converter
The JSON to HTML converter turns any JSON document into a structurally equivalent HTML fragment. It is useful when you need to display arbitrary, deeply-nested JSON inside a page — for documentation, debugging panels, or static API explorers — without writing a custom renderer for every shape of data.
Two output styles are available. The nested <ul> style walks the JSON tree and emits an unordered list where every object key becomes a <strong> label inside an <li>, and every array becomes its own <ul>. Primitive leaves are wrapped in <span> tags with type-specific classes (json-str, json-num, json-bool, json-null) so you can style strings, numbers, booleans, and nulls differently. The definition-list style emits <dl><dt><dd> pairs at the object level, which is the semantically correct HTML for key-value data, and falls back to <ul> for arrays.
For example, the input {"user":{"name":"Ada","roles":["Admin","Editor"]}} in nested-ul mode produces a tree with "user:" containing a sub-list, "name:" with the string "Ada", and "roles:" containing a two-item array. All keys and values are HTML-escaped, so JSON containing < > & or quotes renders literally instead of breaking the page.
FAQ
- What are the two output styles?
- Nested <ul> / <li> renders the JSON as an unordered list tree where every object key is a label and every array becomes its own list. Definition list <dl> is the semantically correct HTML for key-value pairs and is best when most of your data is objects.
- Why span classes like json-str and json-num?
- They make it easy to style strings, numbers, booleans, and nulls differently with your own CSS — for example coloring numbers blue and strings green, the way most JSON viewers do.
- Does this convert JSON into a table?
- No — for tabular data (a flat array of objects), use the JSON to Table tool, which produces a proper <table>. This tool is for hierarchical or arbitrary JSON.
- Are special characters in my JSON safe?
- Yes. Keys and values are HTML-escaped before being inserted into the output, so < > & " in your data render as literal characters instead of breaking the surrounding HTML.
- What if my JSON is invalid?
- You will see the underlying JSON.parse error message — usually a line/column hint that points to the bad character. Fix the JSON and click Generate again.
- Does this run on a server?
- No. Parsing and rendering happen entirely in your browser using the native JSON.parse API. Your JSON is never uploaded or stored.