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10 Best Online JSON Data Converters In JavaScript (2026 Update)

by jQueryScript,
json

JSON (JavaScript Object Notation) is one of the most popular file formats for web & mobile developement that can be used to transmit data objects using human-readable text.

Want to have an online JSON converter that helps you generate JSON data from other file format (e.g. xls, csv, table, HTML, etc) or convert the JSON data into other file formats on the client-side?

Check out this list of 10 best and most popular online JSON converters that are easy to implement on your web app using jQuery and/or Vanilla JavaScript.

Originally Published Sep 24 2019, updated Mar 06 2026

Table of contents:

jQuery JSON Converters:

Export Html Table To JSON/CSV/TXT/PDF - TableHTMLExport

A multifunctional table export jQuery plugin that exports your HTML table and downloads the tabular data as JSON, CSV, TXT, or PDF files.

Export Html Table To JSON/CSV/TXT/PDF - TableHTMLExport

[Demo] [Download]

Export Table & JSON Data To Excel With jQuery - ExportToExcel

A simple & cross-browser jQuery Excel Export plugin that allows to download HTML table and JSON data as an Excel .xls file.

Export Table & JSON Data To Excel With jQuery - ExportToExcel

[Demo] [Download]

JSON To Form And Form To JSON Converter - jQuery jform

jform is an easy jQuery form builder which lets you dynamically generates form fields with preset values using JSON schema.

JSON To Form And Form To JSON Converter - jQuery jform

[Demo] [Download]

Export JavaScript/JSON Data To Excel (XLSX) - JHXLSX

A jQuery dependent JavaScript library to download or create Excel XLSX spreadsheets using JavaScript (JSON).

Export JavaScript/JSON Data To Excel (XLSX) - JHXLSX

[Demo] [Download]

Convert Form Data To A JSON Object - formToJson.js

A super tiny form to JSON converter that makes it easier to serialize your current form data to a JavaScript/JSON objects containing field names & values.

Convert Form Data To A JSON Object - formToJson.js

[Demo] [Download]

Vanilla JavaScript JSON Converters:

Form To JSON And JSON To Form Converter – form-data-json

A Vanilla JavaScript library to simplify the manipulation of HTML form with 2 functionalities:

Features:

  • Form Builder: Fill form fields with JSON data you provide.
  • Form Output: Output form values as JSON data.

Form To JSON And JSON To Form Converter – form-data-json

[Demo] [Download]

Convert JSON To CSS Variables With JavaScript

A JSON to CSS converter that allows you to define design tokens like colors, fonts, and spacing in JSON and convert them into CSS variables.

Convert JSON To CSS Variables With JavaScript

[Demo] [Download]

Convert Form Data To JSON – FormsJS

A simple-to-use JavaScript library that coverts form field values to JSON in real-time.

Convert Form Data To JSON – FormsJS

[Demo] [Download]

JSON To HTML & HTML To JSON Converter – JHson.js

A lightweight and fast JavaScript library for converting between HTML and JSON.

The library converts HTML structures into JSON format so developers can easily store, manipulate, and transfer webpage layouts and data between the server and client sides. On the contrary, it also allows you to write JSON directly to the DOM for rendering.

JSON To HTML & HTML To JSON Converter – JHson.js

[Demo] [Download]

Convert XML To JSON With Pure JavaScript – xmlToJson

Just another dependency-free JavaScript library that converts the XML data into a JSON object.

Small JavaScript Library To Export JSON Data To CSV File – CSV-Export

[Demo] [Download]

Conclusion:

Want more jQuery plugins or JavaScript libraries to create awesome JSON Converter on the web & mobile? Check out the jQuery JSON Converter and JavaScript JSON Converter sections.

See Also: