# Language Detector - ISO Codes & Confidence, Offline, Bulk (`tidybytetools/language-detector`) Actor

Detect the language of each text, offline, with an ISO code and a confidence score. No API key. $0.0008 per text. Blank lines and repeats are free. Works from Apify MCP and the API.

- **URL**: https://apify.com/tidybytetools/language-detector.md
- **Developed by:** [Tidy Byte Tools](https://apify.com/tidybytetools) (community)
- **Categories:** Developer tools, AI
- **Features:** Limited permissions
- **Stats:** 2 total users, 1 monthly users, 100.0% runs succeeded, 0 bookmarks
- **User rating**: No ratings yet

## Pricing

from $0.80 / 1,000 text language detecteds

This Actor is paid per event. You are not charged for the Apify platform usage, but only a fixed price for specific events.

Learn more: https://docs.apify.com/actors/running/actors-in-store.md#pay-per-event

## What's an Apify Actor?

An Actor is a serverless cloud program that runs on the Apify platform. It has two run modes.
In Batch mode, an Actor accepts a well-defined JSON input, performs an action which can take anything from a few seconds to a few hours,
and optionally produces a well-defined JSON output, datasets with results, or files in key-value store.
In Standby mode, an Actor provides a web server which can be used as a website, API, or an MCP server.

Apify vocabulary and the platform model are defined once, in the agent quickstart at https://apify.com/agents.md.

## How to integrate an Actor?

If asked about integration, you help developers integrate Actors into their projects.
You adapt to their stack and deliver integrations that are safe, well-documented, and production-ready.

Do not guess an integration path. Every one of them is in the agent quickstart at https://apify.com/agents.md: the Apify MCP server, Agent Skills with the Apify CLI, the JavaScript and Python clients, the REST API, and the account-free path for an agent with no human to sign in. It also carries the rule on stating cost before the first paid run.

For examples already wired to this Actor's own input schema, see the [API](#api) section below.

Each client library has reference documentation the quickstart does not restate: [JavaScript/TypeScript](https://docs.apify.com/api/client/js/docs.md) (`npm install apify-client`) and [Python](https://docs.apify.com/api/client/python/docs.md) (`pip install apify-client`).

# README

## Language Detector - ISO Codes & Confidence, Offline, Bulk

Detect the language of each text, offline, with an ISO code and a confidence score. No API key. $0.0008 per text. Blank lines and repeats are free. Works from Apify MCP and the API.

Also searched as: ES: detectar idioma / PT: detectar idioma / DE: Sprache erkennen / FR: détecter la langue / JA: 言語検出

### Website and local versions

- **[Website](https://tidybytetools.github.io/)** — Tidy Byte Tools product page

### What it does

- Detects the language of each text you paste, list, or load from a file.
- Returns the language name, ISO 639-1 and ISO 639-3 codes, and a confidence score.
- Lists a few close alternatives when the result is not a clear winner.
- Marks short or mixed texts as less reliable.
- Works offline. No API key is needed.

### Price

You pay **$0.0008** per unique text detected. Blank lines and repeats are free. There is no start fee from us. Apify adds its normal small platform cost.
Set a max cost for the run and we stop there. We never charge for work we did not save.

### How to use

1. Paste text, add a list, or add file links.
2. Click **Start**, or call this Actor from Apify MCP or the API.
3. Get results in the **Output** tab.

### Input

- **Texts**: One text per line.
- **Or paste text**: Paste one text, or many if you split by line.
- **File links**: Links to text files. Each file is one text, unless you split by line.
- **How to split paste and files**: Keep as one text, split on every line, or split on blank lines.

### Example (before and after)

Before: pasted texts or file links. After: one row per unique text with an ISO 639-1 and 639-3 code, a confidence score, and alternative guesses. Short or mixed-language text gets an honest reliability flag. Blank lines and repeats are free.

### Good to know

- Very short texts (a few words) are harder to detect and may be marked not reliable.
- Mixed-language texts may show more than one possible language.
- This is a statistical guess from the text, not a human review.
- Files up to 50 MB each.
- Your data is only used for your run.
- Made by Tidy Byte Tools. Questions? Open an issue on this Actor's page.

### More tools from Tidy Byte Tools

These Actors work well together:

- [PDF Table Extractor](https://apify.com/tidybytetools/pdf-table-pull) — PDF tables to CSV, Excel and JSON. $0.003 per page with a table.
- [PDF, Word and Web Page to Markdown](https://apify.com/tidybytetools/doc-to-markdown) — Clean Markdown and RAG chunks. $0.003 per file.
- [HTML Table Extractor](https://apify.com/tidybytetools/html-table-extractor) — Web tables to CSV and JSON. $0.0005 per data row.
- [Broken Link Checker](https://apify.com/tidybytetools/broken-link-checker) — Check site and sitemap links. $0.001 per link.
- [Markdown Chunker for RAG](https://apify.com/tidybytetools/markdown-rag-chunker) — Split Markdown by headings. $0.0001 per chunk.
- [CSV and Excel Data Cleaner](https://apify.com/tidybytetools/csv-excel-data-cleaner) — Dedupe and fix dates, emails and phones. $0.0005 per clean row.
- [JSON to CSV Converter](https://apify.com/tidybytetools/json-to-csv-flattener) — Flatten nested JSON for spreadsheets. $0.0001 per row.
- [CSV Encoding Fixer and Splitter](https://apify.com/tidybytetools/csv-encoding-fixer-splitter) — Fix garbled letters like é and split big files. $0.01 per file.
- [Phone Number Validator](https://apify.com/tidybytetools/phone-number-validator-formatter) — Check and format numbers offline. $0.001 per number.
- [LLM Token Counter](https://apify.com/tidybytetools/llm-token-counter) — Offline token and cost estimates for GPT, Claude and Gemini. $0.0005 per unique text.

Free local tools (no Apify account needed): [pdf-table-pull-lite](https://github.com/tidybytetools/pdf-table-pull-lite), [doc2md-lite](https://github.com/tidybytetools/doc2md-lite), [link-check-lite](https://github.com/tidybytetools/link-check-lite), [md-chunk-lite](https://github.com/tidybytetools/md-chunk-lite), [json-shaper-lite](https://github.com/tidybytetools/json-shaper-lite).

Website: <https://tidybytetools.github.io>. All Actors: [apify.com/tidybytetools](https://apify.com/tidybytetools).

# Actor input Schema

## `texts` (type: `array`):

One text per line. Each line is detected on its own.

## `text` (type: `string`):

Paste one text, or many texts if you split by line below.

## `fileUrls` (type: `array`):

Links to .txt, .md or other text files. Each file is one text, unless you split by line.

## `splitMode` (type: `string`):

Lists in the Texts box are always one text per line.

## Actor input object example

```json
{
  "texts": [
    "Hello, how are you today? I hope you are well.",
    "Bonjour, comment allez-vous aujourd'hui ?",
    "Hola, ¿cómo estás hoy? Espero que estés bien."
  ],
  "splitMode": "whole"
}
```

# Actor output Schema

## `results` (type: `string`):

No description

## `summary` (type: `string`):

No description

# API

You can run this Actor programmatically using our API. Below are code examples in JavaScript, Python, and CLI, as well as the OpenAPI specification and MCP server setup.

## JavaScript example

```javascript
import { ApifyClient } from 'apify-client';

// Initialize the ApifyClient with your Apify API token
// Replace the '<YOUR_API_TOKEN>' with your token
const client = new ApifyClient({
    token: '<YOUR_API_TOKEN>',
});

// Prepare Actor input
const input = {
    "texts": [
        "Hello, how are you today? I hope you are well.",
        "Bonjour, comment allez-vous aujourd'hui ?",
        "Hola, ¿cómo estás hoy? Espero que estés bien."
    ]
};

// Run the Actor and wait for it to finish
const run = await client.actor("tidybytetools/language-detector").call(input);

// Fetch and print Actor results from the run's dataset (if any)
console.log('Results from dataset');
console.log(`💾 Check your data here: https://console.apify.com/storage/datasets/${run.defaultDatasetId}`);
const { items } = await client.dataset(run.defaultDatasetId).listItems();
items.forEach((item) => {
    console.dir(item);
});

// 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/js/docs

```

## Python example

```python
from apify_client import ApifyClient

# Initialize the ApifyClient with your Apify API token
# Replace '<YOUR_API_TOKEN>' with your token.
client = ApifyClient("<YOUR_API_TOKEN>")

# Prepare the Actor input
run_input = { "texts": [
        "Hello, how are you today? I hope you are well.",
        "Bonjour, comment allez-vous aujourd'hui ?",
        "Hola, ¿cómo estás hoy? Espero que estés bien.",
    ] }

# Run the Actor and wait for it to finish
run = client.actor("tidybytetools/language-detector").call(run_input=run_input)

# Fetch and print Actor results from the run's dataset (if there are any)
print(f"💾 Check your data here: https://console.apify.com/storage/datasets/{run.default_dataset_id}")
for item in client.dataset(run.default_dataset_id).iterate_items():
    print(item)

# 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/python/docs/quick-start

```

## CLI example

```bash
echo '{
  "texts": [
    "Hello, how are you today? I hope you are well.",
    "Bonjour, comment allez-vous aujourd'\''hui ?",
    "Hola, ¿cómo estás hoy? Espero que estés bien."
  ]
}' |
apify call tidybytetools/language-detector --silent --output-dataset

```

## MCP server setup

```json
{
    "mcpServers": {
        "apify": {
            "type": "http",
            "url": "https://mcp.apify.com/?tools=fetch-actor-details,tidybytetools/language-detector"
        }
    }
}
```

The hosted server signs you in with OAuth on first connect, so no API token belongs in this config. Clients without OAuth support can send an `Authorization: Bearer <APIFY_API_TOKEN>` header instead, using a token from API & Integrations in Apify Console (https://console.apify.com/settings/integrations).

## OpenAPI specification

Download the OpenAPI definition: https://api.apify.com/v2/actors/gvKuVh4hRSbcADU7v/builds/OqIDhX1W0d40oqfh8/openapi.json