HTML Lang Attribute Checker
Check pasted HTML for a valid html lang attribute. Free, private, and local-first.
Use HTML Lang Attribute Checker
Check pasted HTML for a valid html lang attribute.
Lang attribute found
Detected lang="en". This helps accessibility tools and search engines understand the page language.
Quick answer
HTML Lang Attribute Checker is a free online tool that helps you check pasted HTML for a valid html lang attribute. It runs in your browser, so you can work with development data, text, files, or generated output without creating an account.
About HTML Lang Attribute Checker
HTML Lang Attribute Checker helps you check pasted HTML for a valid html lang attribute. It is designed for focused local-first workflows where you need a quick result without creating an account or sending your input to a server.
Common uses include checking static html pages before launch, improving accessibility audits, reviewing cms templates.
Use the examples, usage notes, FAQ, and related tools below when you need to compare formats, build sample data, validate inputs, or move into the next step of the same workflow.
What this tool does
How to use HTML Lang Attribute Checker
- 1
Paste your full HTML document or opening html tag.
- 2
Review whether a lang value is detected.
- 3
Add or fix the lang attribute in your source code.
- 4
Run the checker again after changes.
Examples
Good
<html lang="en">
Regional
<html lang="en-US">
Missing
<html>
Use cases
- Checking static HTML pages before launch
- Improving accessibility audits
- Reviewing CMS templates
- Finding missing language declarations
Related workflow
After using HTML Lang Attribute Checker, many workflows continue with related tools for validation, conversion, cleanup, mock data, or final export.
Privacy and usage notes
CodeVella tools are designed to run locally in your browser. Your input is not uploaded to a server, and no account is required.
Generated test data is intended for development, QA, demos, and safe internal workflows.
Frequently asked questions
Is my data uploaded?+
No. This tool is designed to run locally in your browser.
Do I need an account?+
No signup is required for CodeVella tools.
Why does the html lang attribute matter?+
The lang attribute helps screen readers pronounce content correctly and helps search engines understand the page language.
What does a good lang attribute look like?+
Use a language code such as <html lang="en"> or a regional code such as <html lang="en-US"> when region matters.