# Keyword Density Checker API — Top Terms for Any URL (`eliai/webpage-keyword-density`) Actor Check keyword density via API. Input: a page URL. Output: JSON of top 1-3 word phrases with counts and density percentages — the on-page SEO signal writers and agents optimize against. Cheap pay-per-result: $0.02 per page scanned. - **URL**: https://apify.com/eliai/webpage-keyword-density.md - **Developed by:** [Anthony Snider](https://apify.com/eliai) (community) - **Categories:** SEO tools, Marketing, Automation - **Stats:** 2 total users, 1 monthly users, 100.0% runs succeeded, 0 bookmarks - **User rating**: No ratings yet ## Pricing $20.00 / 1,000 page scanneds 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/platform/actors/running/actors-in-store#pay-per-event ## What's an Apify Actor? Actors are a software tools running on the Apify platform, for all kinds of web data extraction and automation use cases. 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. Actors are written with capital "A". ## 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. The best way to integrate Actors is as follows. In JavaScript/TypeScript projects, use official [JavaScript/TypeScript client](https://docs.apify.com/api/client/js.md): ```bash npm install apify-client ``` In Python projects, use official [Python client library](https://docs.apify.com/api/client/python.md): ```bash pip install apify-client ``` In shell scripts, use [Apify CLI](https://docs.apify.com/cli/docs.md): ````bash # MacOS / Linux curl -fsSL https://apify.com/install-cli.sh | bash # Windows irm https://apify.com/install-cli.ps1 | iex ```bash In AI frameworks, you might use the [Apify MCP server](https://docs.apify.com/platform/integrations/mcp.md). If your project is in a different language, use the [REST API](https://docs.apify.com/api/v2.md). For usage examples, see the [API](#api) section below. For more details, see Apify documentation as [Markdown index](https://docs.apify.com/llms.txt) and [Markdown full-text](https://docs.apify.com/llms-full.txt). # README ## Webpage Keyword Density Analyzer Compute keyword density and the top 1-3 word phrases for any web page — the exact on-page SEO signal writers and AI agents optimize for. **Live on the Apify Store — run it instantly or call it as an agent tool via Apify MCP.** ### What you get - Visible-text extraction: scripts, styles, SVG, comments and tags stripped out. - Stopword removal and lowercase normalization for clean content terms. - **Unigram, bigram and trigram** frequencies with **density %** (count / total content words). - Top N terms per n-gram (default 30), single URL or bulk, with a per-run cap. ### Input ```json { "url": "https://en.wikipedia.org/wiki/Search_engine_optimization", "minLength": 3, "topN": 30 } ```` Bulk variant: ```json { "urls": ["https://example.com", "https://example.org/blog"], "maxUrls": 25, "topN": 20 } ``` ### Output One dataset item per URL: ```json { "url": "https://en.wikipedia.org/wiki/Search_engine_optimization", "status": 200, "wordCount": 4123, "totalTokens": 9876, "topKeywords": [ { "term": "search", "count": 210, "densityPct": 5.094 }, { "term": "engine", "count": 188, "densityPct": 4.56 } ], "topBigrams": [ { "term": "search engine", "count": 142, "densityPct": 3.444 } ], "topTrigrams": [ { "term": "search engine optimization", "count": 38, "densityPct": 0.921 } ] } ``` ### Pricing Pay-per-event: **$0.02 per page scanned** (`page-scanned`). # Actor input Schema ## `url` (type: `string`): A single page URL to analyze for keyword density. ## `urls` (type: `array`): Multiple page URLs to analyze in one run. Use instead of (or together with) the single URL above. ## `maxUrls` (type: `integer`): Hard cap on how many URLs are processed in a run. ## `minLength` (type: `integer`): Ignore words shorter than this when ranking keywords and phrases. ## `topN` (type: `integer`): How many top terms to return per n-gram (unigrams, bigrams, trigrams). ## Actor input object example ```json { "url": "https://en.wikipedia.org/wiki/Search_engine_optimization", "maxUrls": 25, "minLength": 3, "topN": 30 } ``` # API You can run this Actor programmatically using our API. Below are code examples in JavaScript, Python, and CLI, as well as the OpenAPI specification and MCP server setup. ## JavaScript example ```javascript import { ApifyClient } from 'apify-client'; // Initialize the ApifyClient with your Apify API token // Replace the '' with your token const client = new ApifyClient({ token: '', }); // Prepare Actor input const input = { "url": "https://en.wikipedia.org/wiki/Search_engine_optimization" }; // Run the Actor and wait for it to finish const run = await client.actor("eliai/webpage-keyword-density").call(input); // Fetch and print Actor results from the run's dataset (if any) console.log('Results from dataset'); console.log(`💾 Check your data here: https://console.apify.com/storage/datasets/${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 '' with your token. client = ApifyClient("") # Prepare the Actor input run_input = { "url": "https://en.wikipedia.org/wiki/Search_engine_optimization" } # Run the Actor and wait for it to finish run = client.actor("eliai/webpage-keyword-density").call(run_input=run_input) # Fetch and print Actor results from the run's dataset (if there are any) print("💾 Check your data here: https://console.apify.com/storage/datasets/" + run["defaultDatasetId"]) for item in client.dataset(run["defaultDatasetId"]).iterate_items(): print(item) # 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/python/docs/quick-start ``` ## CLI example ```bash echo '{ "url": "https://en.wikipedia.org/wiki/Search_engine_optimization" }' | apify call eliai/webpage-keyword-density --silent --output-dataset ``` ## MCP server setup ```json { "mcpServers": { "apify": { "command": "npx", "args": [ "mcp-remote", "https://mcp.apify.com/?tools=eliai/webpage-keyword-density", "--header", "Authorization: Bearer " ] } } } ``` ## OpenAPI specification ```json { "openapi": "3.0.1", "info": { "title": "Keyword Density Checker API — Top Terms for Any URL", "description": "Check keyword density via API. Input: a page URL. Output: JSON of top 1-3 word phrases with counts and density percentages — the on-page SEO signal writers and agents optimize against. Cheap pay-per-result: $0.02 per page scanned.", "version": "0.1", "x-build-id": "gYci03XiwyYKzpBJf" }, "servers": [ { "url": "https://api.apify.com/v2" } ], "paths": { "/acts/eliai~webpage-keyword-density/run-sync-get-dataset-items": { "post": { "operationId": "run-sync-get-dataset-items-eliai-webpage-keyword-density", "x-openai-isConsequential": false, "summary": "Executes an Actor, waits for its completion, and returns Actor's dataset items in response.", "tags": [ "Run Actor" ], "requestBody": { "required": true, "content": { "application/json": { "schema": { "$ref": "#/components/schemas/inputSchema" } } } }, "parameters": [ { "name": "token", "in": "query", "required": true, "schema": { "type": "string" }, "description": "Enter your Apify token here" } ], "responses": { "200": { "description": "OK" } } } }, "/acts/eliai~webpage-keyword-density/runs": { "post": { "operationId": "runs-sync-eliai-webpage-keyword-density", "x-openai-isConsequential": false, "summary": "Executes an Actor and returns information about the initiated run in response.", "tags": [ "Run Actor" ], "requestBody": { "required": true, "content": { "application/json": { "schema": { "$ref": "#/components/schemas/inputSchema" } } } }, "parameters": [ { "name": "token", "in": "query", "required": true, "schema": { "type": "string" }, "description": "Enter your Apify token here" } ], "responses": { "200": { "description": "OK", "content": { "application/json": { "schema": { "$ref": "#/components/schemas/runsResponseSchema" } } } } } } }, "/acts/eliai~webpage-keyword-density/run-sync": { "post": { "operationId": "run-sync-eliai-webpage-keyword-density", "x-openai-isConsequential": false, "summary": "Executes an Actor, waits for completion, and returns the OUTPUT from Key-value store in response.", "tags": [ "Run Actor" ], "requestBody": { "required": true, "content": { "application/json": { "schema": { "$ref": "#/components/schemas/inputSchema" } } } }, "parameters": [ { "name": "token", "in": "query", "required": true, "schema": { "type": "string" }, "description": "Enter your Apify token here" } ], "responses": { "200": { "description": "OK" } } } } }, "components": { "schemas": { "inputSchema": { "type": "object", "properties": { "url": { "title": "Page URL", "type": "string", "description": "A single page URL to analyze for keyword density." }, "urls": { "title": "Page URLs (bulk)", "type": "array", "description": "Multiple page URLs to analyze in one run. Use instead of (or together with) the single URL above.", "items": { "type": "string" } }, "maxUrls": { "title": "Max URLs", "minimum": 1, "maximum": 50, "type": "integer", "description": "Hard cap on how many URLs are processed in a run.", "default": 25 }, "minLength": { "title": "Min word length", "minimum": 1, "maximum": 12, "type": "integer", "description": "Ignore words shorter than this when ranking keywords and phrases.", "default": 3 }, "topN": { "title": "Top N terms", "minimum": 1, "maximum": 200, "type": "integer", "description": "How many top terms to return per n-gram (unigrams, bigrams, trigrams).", "default": 30 } } }, "runsResponseSchema": { "type": "object", "properties": { "data": { "type": "object", "properties": { "id": { "type": "string" }, "actId": { "type": "string" }, "userId": { "type": "string" }, "startedAt": { "type": "string", "format": "date-time", "example": "2025-01-08T00:00:00.000Z" }, "finishedAt": { "type": "string", "format": "date-time", "example": "2025-01-08T00:00:00.000Z" }, "status": { "type": "string", "example": "READY" }, "meta": { "type": "object", "properties": { "origin": { "type": "string", "example": "API" }, "userAgent": { "type": "string" } } }, "stats": { "type": "object", "properties": { "inputBodyLen": { "type": "integer", "example": 2000 }, "rebootCount": { "type": "integer", "example": 0 }, "restartCount": { "type": "integer", "example": 0 }, "resurrectCount": { "type": "integer", "example": 0 }, "computeUnits": { "type": "integer", "example": 0 } } }, "options": { "type": "object", "properties": { "build": { "type": "string", "example": "latest" }, "timeoutSecs": { "type": "integer", "example": 300 }, "memoryMbytes": { "type": "integer", "example": 1024 }, "diskMbytes": { "type": "integer", "example": 2048 } } }, "buildId": { "type": "string" }, "defaultKeyValueStoreId": { "type": "string" }, "defaultDatasetId": { "type": "string" }, "defaultRequestQueueId": { "type": "string" }, "buildNumber": { "type": "string", "example": "1.0.0" }, "containerUrl": { "type": "string" }, "usage": { "type": "object", "properties": { "ACTOR_COMPUTE_UNITS": { "type": "integer", "example": 0 }, "DATASET_READS": { "type": "integer", "example": 0 }, "DATASET_WRITES": { "type": "integer", "example": 0 }, "KEY_VALUE_STORE_READS": { "type": "integer", "example": 0 }, "KEY_VALUE_STORE_WRITES": { "type": "integer", "example": 1 }, "KEY_VALUE_STORE_LISTS": { "type": "integer", "example": 0 }, "REQUEST_QUEUE_READS": { "type": "integer", "example": 0 }, "REQUEST_QUEUE_WRITES": { "type": "integer", "example": 0 }, "DATA_TRANSFER_INTERNAL_GBYTES": { "type": "integer", "example": 0 }, "DATA_TRANSFER_EXTERNAL_GBYTES": { "type": "integer", "example": 0 }, "PROXY_RESIDENTIAL_TRANSFER_GBYTES": { "type": "integer", "example": 0 }, "PROXY_SERPS": { "type": "integer", "example": 0 } } }, "usageTotalUsd": { "type": "number", "example": 0.00005 }, "usageUsd": { "type": "object", "properties": { "ACTOR_COMPUTE_UNITS": { "type": "integer", "example": 0 }, "DATASET_READS": { "type": "integer", "example": 0 }, "DATASET_WRITES": { "type": "integer", "example": 0 }, "KEY_VALUE_STORE_READS": { "type": "integer", "example": 0 }, "KEY_VALUE_STORE_WRITES": { "type": "number", "example": 0.00005 }, "KEY_VALUE_STORE_LISTS": { "type": "integer", "example": 0 }, "REQUEST_QUEUE_READS": { "type": "integer", "example": 0 }, "REQUEST_QUEUE_WRITES": { "type": "integer", "example": 0 }, "DATA_TRANSFER_INTERNAL_GBYTES": { "type": "integer", "example": 0 }, "DATA_TRANSFER_EXTERNAL_GBYTES": { "type": "integer", "example": 0 }, "PROXY_RESIDENTIAL_TRANSFER_GBYTES": { "type": "integer", "example": 0 }, "PROXY_SERPS": { "type": "integer", "example": 0 } } } } } } } } } } ```