# Page Weight Audit (`conserving_mastodon/page-weight-audit`) Actor A performance read without a headless browser: parse the HTML, measure every script, stylesheet, and image by transfer size, total the page weight, and flag render-blocking resources, uncompressed assets, and oversized images. Charged only on completed audits. - **URL**: https://apify.com/conserving\_mastodon/page-weight-audit.md - **Developed by:** [Chris Arsenault](https://apify.com/conserving_mastodon) (community) - **Categories:** SEO tools, Developer tools, Automation - **Stats:** 2 total users, 1 monthly users, 100.0% runs succeeded, 0 bookmarks - **User rating**: No ratings yet ## Pricing $250.00 / 1,000 completed audits 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? Actors are web data automations that power AI and operations. They run on the Apify platform to scrape websites, process data, connect APIs, and automate workflows. 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. - **AI agents and MCP clients** — the [Apify MCP server](https://docs.apify.com/integrations/mcp.md) at `https://mcp.apify.com` (remote, streamable HTTP, OAuth on first use). - **Agentic workflows and local Actor development** — [Agent Skills](https://apify.com/.well-known/agent-skills/index.json) with the [Apify CLI](https://docs.apify.com/cli/docs.md): `npm install -g apify-cli`, then `apify login`. - **JavaScript/TypeScript projects** — the official [JS/TS client](https://docs.apify.com/api/client/js/docs.md): `npm install apify-client`. - **Python projects** — the official [Python client](https://docs.apify.com/api/client/python/docs.md): `pip install apify-client`. - **Any other language** — 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 ## Page Weight Audit **How heavy is this page, and what is making it heavy — without spinning up a headless browser.** It parses the HTML, finds every script, stylesheet, and image, measures each one's transfer size, totals the page weight, and flags the usual culprits: render-blocking resources in the head, uncompressed JavaScript and CSS, and oversized images. ### What you get Summary plus one row per resource: ```json { "url": "https://example.com", "total_transfer_mb": 2.8, "html_compressed": true, "script_count": 24, "script_bytes": 1180000, "image_count": 18, "image_bytes": 1420000, "render_blocking_count": 6, "fixes": [ "Page transfers about 2.8 MB (measured); most pages should target under 2 MB.", "6 render-blocking resources in ; defer scripts and inline critical CSS." ] } ``` ```json { "kind": "image", "url": "https://.../hero.png", "bytes": 840000, "encoding": "none", "render_blocking": false } ``` ### Why "without a headless browser" matters Most performance tools boot Chrome, which is slow, expensive, and overkill when the question is "what does this page ship and how big is it." This runs in a second on plain HTTP, which makes it cheap enough to schedule across a whole site. ### Use cases - **Performance budgets**: schedule it on key templates; alert when total weight or render-blocking count creeps up. - **Agencies**: a concrete, byte-level weight breakdown for site audits, no Lighthouse setup. - **Agents optimizing sites**: pipe the resource rows into a compression or lazy-loading workflow. ### Honesty notes - Weight is measured from real transfer sizes (Content-Length / ranged requests), capped at 60 resources per page for politeness; the summary reports anything unmeasured or truncated. - This measures what the page *ships* (its resource payload); it is not a Core Web Vitals field-data or rendering-timeline tool, and the listing will not pretend otherwise. - Unreachable pages report cleanly and **you are not charged**; billing is per completed audit. Built by 1450 Enterprises. # Actor input Schema ## `url` (type: `string`): The page whose resources are inventoried and weighed. ## Actor input object example ```json { "url": "https://www.apify.com" } ``` # Actor output Schema ## `results` (type: `string`): Summary: total transfer weight, per-type counts and bytes, render-blocking count, compression, fixes. Then one row per script/stylesheet/image with its measured size. # 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://www.apify.com" }; // Run the Actor and wait for it to finish const run = await client.actor("conserving_mastodon/page-weight-audit").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://www.apify.com" } # Run the Actor and wait for it to finish run = client.actor("conserving_mastodon/page-weight-audit").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 '{ "url": "https://www.apify.com" }' | apify call conserving_mastodon/page-weight-audit --silent --output-dataset ``` ## MCP server setup ```json { "mcpServers": { "apify": { "type": "http", "url": "https://mcp.apify.com/?tools=fetch-actor-details,conserving_mastodon/page-weight-audit" } } } ``` 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 ` 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/p8IOMNcl6x8eec3Ao/builds/t6J78BXg6jDfSWcDG/openapi.json