How do I minify HTML?

Open the HTML Minifier tab, paste your HTML, click Minify, then copy the one-line result.

Does the tool send my data to a server?

No. Everything runs locally in your browser. Nothing is uploaded.

What does JSON Encode do?

It turns any text into a JSON string literal with special characters escaped so you can safely embed it in JSON.

What happens if my JSON is invalid?

The JSON Formatter and JSON Editor show a clear error message so you can fix the syntax and format again.

HTML & JSON Formatter Toolkit — Minify HTML, JSON Encode, Pretty Print, Live JSON Editor

HTML & JSON Toolkit CATechGlobal.com

Input HTML

Paste HTML to minify

Result (Minified)

Ready

Keeps content inside <script>, <style>, <pre>, <textarea>. Removes comments and whitespace between tags.

Input (Text to encode)

Convert text into a JSON string

Result (JSON string)

Ready

Uses JSON.stringify to escape special characters.

Input JSON

Paste minified or unformatted JSON

Result (Pretty JSON)

Ready

If JSON is invalid, you will see a detailed error. Indentation: 2 spaces.

JSON Editor (One-field, colored)

Live (auto) Ready

Type directly in the colored area. The system will automatically Beautify + Highlight when Valid JSON (Live), with Minify and Copy.

Input Text

Live (auto)

Result (Counts)

Ready

Characters: 0
Characters (no spaces): 0
Words: 0
Lines: 0
Bytes (UTF‑8): 0

Characters are counted as user‑perceived characters (grapheme clusters). If unavailable, we fall back to Unicode code points. Bytes are calculated using UTF‑8.

Input Text

Live (auto)

Result (Transformations)

Ready

Locale-aware for Vietnamese (upper/lower/title). Slug/camel remove accents.

Free HTML Minifier, JSON Tools & JSON Editor

This lightweight toolkit helps developers compress HTML, encode any text to a JSON string, pretty print JSON, and edit JSON with color syntax highlighting. Everything runs locally in your browser, so your data never leaves your device.

Quick tips

Press Ctrl/Cmd + Enter to run the active tab action.
Use the theme toggle (Dark/Light). Your choice is saved in a cookie.
JSON Editor supports Beautify, Minify, Copy, and optional Live (auto) validation.

HTML & JSON Toolkit CATechGlobal.com Dark Light

Input HTML

Result (Minified)

Input (Text to encode)

Result (JSON string)

Input JSON

Result (Pretty JSON)

JSON Editor (One-field, colored)

Input Text

Result (Counts)

Input Text

Result (Transformations)

Free HTML Minifier, JSON Tools & JSON Editor

Quick tips

HTML & JSON Toolkit CATechGlobal.com