Free JSON & XML tools

Format, validate, diff, and convert data in your browser. No uploads, no sign-up — the same neutral editor chrome you get inside every tool on this site.

100% in-browser No sign-up Works offline after first load

Why JSON & XML Tools?

Developers, QA engineers, and students use webtoolkit.in to format, validate, diff, and convert structured data without installing desktop software or creating accounts. Every tool runs 100% in your browser — your JSON and XML files are not uploaded to our servers.

We built this site because most online formatters send your data to a backend. That is unacceptable when you are debugging production API responses, reviewing internal configs, or handling customer records. Our editors use Monaco, JSON Schema (AJV), XPath, and XSD validation locally, with the same professional UI across every page.

Who is this for?

Backend developers — validate JSON Schema, diff API versions, convert payloads
DevOps & SRE — compare YAML/JSON configs, XPath into XML deployment files
QA & support — reproduce formatting issues and share diff screenshots safely
Students — learn JSON, XML, XPath, and schema validation with free tools

Built by Anita Kumawat (Tvishi Tech Services). Read our About page or IT overview for security reviewers.

Guides & tutorials

New to JSON Schema or XPath? Our written guides explain real workflows — not just button clicks. Each article links to the matching free tool so you can practice immediately.

JSON Schema validation guide Catch invalid API payloads before production Compare JSON API responses Diff staging vs production safely JSON vs YAML: when to use each Configs, APIs, and CI pipelines XPath basics for XML config Selectors, predicates, namespaces XML well-formedness & XSD Parse errors vs schema violations Editing JSON safely in the browser Privacy, localStorage, and verification

View all guides →

JSON tools

{ }

JSON Editor Pro

Tree view, format, diff, JSON Schema validation, and CSV / YAML / TOON transforms

JSON Formatter

Pretty-print or minify with sort keys and 2 / 4-space indent

JSON Diff

Side-by-side diff with deep sort and syntax highlighting

YAML Diff

Compare YAML configs with per-side sort and format toggles

JSON to CSV

Turn JSON arrays into spreadsheet-ready CSV

JSON to YAML

Convert JSON to clean block-style YAML

JSON to TOON

Token-Oriented Object Notation for LLM-friendly output

XML tools

</>

XML Editor Pro

Tree view, diff, XPath, XSLT, XSD validation, and converters — all in-browser

XML Formatter

Pretty-print or minify XML instantly

XML Diff

Compare two documents with sort and whitespace options

Validate XML

Well-formedness check and XSD schema validation

XPath Studio

Run XPath expressions and inspect results

XSLT Playground

Apply your own XSLT stylesheet to XML

XML to JSON

Convert XML documents to JSON

XML to YAML

Convert XML to YAML format

XML to CSV

Flatten XML to CSV for spreadsheets

XML to Markdown

Convert XML structure to Markdown text

XML to HTML Table

Render XML as an HTML table

Image Toolkit

From the same team.

Resize, compress, and convert images in your browser — no upload