Free JSON, XML & HTML Tools Online
Pretty-print JSON, check syntax, minify payloads, and encode HTML entities without leaving the tab. Every formatter and validator on this page runs in JavaScript on your device.
Use the JSON formatter when you need readable API output, the validator when a parse error is hiding in a large blob, and the minifier before embedding JSON in a page. HTML encode/decode is for entities, not for rendering a full document. XML tools follow the same local-only model.
JSON Formatter
Format and indent JSON files.
JSON Validator
Verify syntax errors in JSON objects.
JSON Beautifier
Structure JSON listings into readable files.
JSON Minifier
Compress JSON configurations by stripping whitespaces.
JSON Sorter
Sort JSON object keys alphabetically.
JSON Escape
Escape special chars in JSON strings.
JSON Unescape
Unescape code blocks from escaped JSON values.
XML Formatter
Format and indent XML codes.
XML Minifier
Compress XML files by stripping space indents.
XML Escape
Escape XML values to avoid syntax errors.
XML Unescape
Convert XML entities back to readable tags.
HTML Encoder
Encode special HTML characters to prevent XSS.
HTML Decoder
Decode HTML entities back to markup tags.
HTML Minifier
Compress HTML codes by removing empty spacing rows.
HTML Beautifier
Format and align layout nodes.
HTML to Text
Wipe tags to extract plain text contents.
Text to HTML
Convert text formatting lines into HTML paragraphs.
Looking for something else? Browse all 99 tools.