Syntax Highlighter

Paste code, pick a language, and preview a dark GitHub-style highlighted output. Highlight source code for common languages with highlight.js.

Introduction

Syntax Highlighter is a free, browser-based utility in our Code Tools collection. Paste code, pick a language, and preview a dark GitHub-style highlighted output. Syntax Highlighter uses highlight.js in the browser for JS, TS, Python, SQL, and more. Everything runs locally in your browser — inputs stay on your device, with no account or upload required. Highlights include multiple languages.

Features

Multiple languages
Live preview
Copy source

How to use

1
Paste code and choose a language.
2
View the highlighted preview.

Example

JS

Input

console.log('hi')

Output

highlighted preview

Benefits

Run Highlight entirely in the browser with no signup or installation.
Keep sensitive sample data private — processing never leaves your device.
Multiple languages
Live preview
Copy source
Pair it with Code Formatter and Code Image when your workflow needs adjacent utilities.

FAQs

Copy your source from the editor; preview is for display.

A curated set is bundled for size.

No.

Yes. Highlight on EverydayDevTools is free, with no account, watermarks, or usage caps for normal interactive use.

No. Highlight runs in your browser. Your input is processed locally and is not sent to EverydayDevTools servers.

Paste code, pick a language, and preview a dark GitHub-style highlighted output. It fits everyday code tools tasks when you want a fast local utility instead of installing a CLI or opening a heavy IDE feature.

Core capabilities include: Multiple languages; Live preview; Copy source.

Developers often pair Highlight with Code Formatter, Code Image, Markdown Preview. Open Related tools on this page for quick links.