Code Highlighter: Format and Export Highlighted Code
Code Highlighter uses highlight.js to display code with syntax highlighting across 20+ languages. Choose a language or use auto-detection, select a dark or light theme, and toggle line numbers. Copy the highlighted HTML or export the result as a PNG image with html2canvas. The tool runs in your browser.
Code Highlighter is a browser-based syntax highlighter for developers who want to make code easier to read or share. It uses highlight.js, which is lazy-loaded, and supports 20+ languages. Choose the language yourself or use auto-detection, then view the code with syntax highlighting in the tool.
The available display options include dark and light themes and a line-number toggle. Once your code is highlighted, you can copy the highlighted HTML or export the result as a PNG image via html2canvas. These options let you choose a format that suits how you plan to reuse or share the highlighted code.
Code itself can be written in many programming languages, while HTML provides a markup format for structuring content. Code Highlighter does not convert one programming language into another; it presents code with syntax highlighting and lets you copy the highlighted HTML or export an image. This can help when you need a more readable view of a snippet or a visual version to share.
Code Highlighter runs entirely in your browser, and your input is processed on your own device rather than sent to a server. Once the page has loaded, the tool works offline without a server dependency. It is free to use and can help developers and DevOps engineers inspect unfamiliar code, prepare examples, or create readable code excerpts.
Step 1: Paste or drop your code into the tool to prepare it for highlighting.
Step 2: Choose a language or use auto-detection to apply syntax highlighting to your code.
Step 3: Select a dark or light theme, then toggle line numbers if you want them displayed.
Step 4: Copy the highlighted HTML or export the highlighted result as a PNG image.
Use case: Inspect a code snippet you did not write and find it difficult to read. Syntax highlighting can make the code easier to scan.
Use case: Check the structure of a value before writing code that consumes it. Highlighting helps distinguish code elements visually.
Use case: Copy a clean excerpt from a large code document. Use the highlighted HTML when you need to reuse the formatted code.
Use case: Prepare a code sample for a document or presentation. Export the highlighted result as a PNG image.
Use case: Share a code example with line numbers visible. Toggle line numbers before copying the HTML or exporting an image.
Use case: Compare how a snippet looks with different visual settings. Select a dark or light theme and choose a language or auto-detection.