Language Detector

Wondering what language is this? The Language Detector is a free online tool. It instantly identifies the language of any text or web page. It is built for fast content analysis, multilingual SEO checks and routing work.

What does the Language Detector do?

The Language Detector reads your input and determines its language. It combines Unicode script detection with function-word and character analysis. This lets it handle Latin, Cyrillic, Greek, Arabic and Hebrew scripts. It also covers CJK and many other writing systems.

You paste text or enter a URL. The tool returns the most probable language with a confidence score. It also shows other candidates, the detected writing system and basic text statistics.

For mixed-language content it shows a percentage breakdown of every language found. You can see exactly how the text is split.

Detection modes: Auto, AI and local

The tool offers three ways to identify language. The local mode runs on a built-in engine. It is instant, unlimited and available on the free plan. It works best on full sentences and longer passages.

The AI mode uses a language model. It covers 100+ languages and is more accurate on short text. The Auto mode combines both. It runs the local engine first. When the result is uncertain (below 70%), it checks with AI. Auto and AI are available on paid plans.

The word count, character count and writing system are computed deterministically. This keeps the text statistics consistent and repeatable.

How does the Language Detector help SEO?

When you analyze a URL, the tool compares the content language with the page lang attribute. A mismatch is a common and easily missed SEO problem. It can affect indexing and hreflang targeting.

You get an instant suggestion for the correct hreflang and ISO 639-1 code. This helps you set up international targeting correctly the first time.

The tool also speeds up daily work. You sort fetched content by language and verify translations. It is easier to route messages to the right team.

Typical uses of the Language Detector tool

• Checking whether a page declared language matches its real content
• Finding the correct hreflang value for international SEO
• Sorting large amounts of fetched content by language
• Verifying the source language before sending text for translation
• Detecting multiple languages in a single document

Comparison of the Language Detector with other tools

Feature	DiagnoSEO	Other tools
Single primary language	yes	yes
Confidence score	yes	yes
Percentage breakdown of multiple languages	yes	no
Writing-system detection	yes	no
Detection from a live URL	yes	no
Comparison with the lang attribute (SEO)	yes	no

Tips and best practices

• Provide at least one full sentence for a reliable result
• Single words work too, but may not reach a confident result
• For very short text, choose the AI or Auto mode
• Use the URL mode to audit a page language declaration
• For JavaScript pages, enable client-side rendering

How to use the Language Detector tool

1. Choose the "Paste text" or "From URL" tab.
2. Enter your text or a page address.
3. Pick a detection mode: Auto, AI or local.
4. Optionally open advanced settings to use the premium proxy.
5. Run the detection.
6. Review the main language, confidence score and full breakdown.

Case study

An agency audited a multilingual store. It ran every URL through the Language Detector. Several pages declared the language as en, yet held German content.

The team fixed the language attributes and hreflang tags. The affected pages started ranking in the right regional results. They stopped competing in the wrong market.

FAQ

• How do I tell what language this text is?

  Paste the text and run the detection. This online tool tells you what language is this. It adds a confidence score, the writing system and other likely languages.

• How many languages can the tool detect?

  The detector recognises more than 35 languages. It covers Latin, Cyrillic, Greek, Arabic, Hebrew, Thai, Devanagari and CJK scripts.

• Can it detect more than one language in the same text?

  Yes. For mixed text it shows a percentage breakdown of every language found.

• Can it detect the language of a web page?

  Yes. Use the "From URL" mode. The tool fetches the page and compares the detected language with the lang attribute.

• How is the AI mode different from the local mode?

  The local mode is a fast, free built-in engine. It works best on full sentences. The AI mode uses a language model and is more accurate on short text. The AI and Auto modes are available on paid plans.

• Is the Language Detector free?

  Yes, text detection is free. Fetching pages through the premium proxy is available on paid plans.

• Is my text stored?

  Detection runs in real time. The analyzed text is not stored permanently.