Language Detection Preview
Guess the programming language of a code snippet. Compare the top two matches and check the highlighted result.
How reliable is automatic code-language detection?
The highlighter scores a selected set of common languages and reports the strongest match with an alternative when available. Short or ambiguous snippets may match several languages.
Your result
A little clarity, right here.
Start with your own content or load the example. Your result will appear here.
Three simple steps
How to use Language Detection Preview
Choose your input and adjust the options.
Review the preview and run the tool.
Download the result and keep your original.
Common questions
Good to know
Understand the result.
Keep the original.
Is this tool free, and are my files uploaded?
This tool is free with no account required. The work happens in your browser. Your input and files are not sent to a processing server.
What are the limits and details?
This is a heuristic guess, not a compiler or a definitive language classifier. The candidate set includes common web, scripting, and systems languages, and no code is executed.
Limits: 500,000 characters per text field; files up to 20 MB each, 10 files and 50 MB total. Processing stops after 30 seconds.