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- Browser state whatever it is
- Extensions, profile every machine differs
- The bug does not reproduce
Sessions are free — pay only for traffic
Cloud Browser for JavaScript Profiling
Profile and debug JavaScript in remote Chromium without running Chrome on your own servers. Connect with Playwright or Puppeteer to reproduce real page behavior and investigate performance issues.
- Profile JavaScript in a real Chromium environment
- Check page performance and memory usage
- Connect through CDP with Playwright or Puppeteer
JavaScript Profiling
Profile JavaScript
in remote Chromium
Run your page in Floppydata Cloud Browser and check its JavaScript performance in a real Chromium session. Use your existing code to test page loads, navigation, clicks, and other interactions without running Chrome locally.
Your profiling script profile.ts
const client = await page.context().newCDPSession(page);await client.send('Performance.enable');await page.goto('https://example.com');await page.click('#load-more');const { metrics } = await client.send('Performance.getMetrics');Why Use a Cloud Browser for JavaScript Profiling?
JavaScript issues can be difficult to reproduce. A page may work normally on a developer's machine but slow down, use more memory, or behave differently after a specific sequence of actions.
With a cloud browser for JavaScript profiling, you can recreate the same workflow in a separate Chromium session and see what happens while the page is running. Start a session, repeat the actions that caused the issue, and check the results. This works particularly well for dynamic websites, where performance can change after JavaScript execution, user interactions, or changes in browser state.
Find JavaScript Performance Problems in a Real Browser
Modern websites can keep running JavaScript long after the page first loads. Client-side rendering, third-party scripts, event handlers, API calls, and dynamic content may all add processing time or increase memory usage. Remote Chromium lets you run the page as a real browser would and check what happens during loading and interaction. Common profiling tasks include:
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Checking page load performance
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Finding slow JavaScript execution
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Monitoring memory usage
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Reproducing performance issues
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Testing JavaScript-heavy pages
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Comparing performance after repeated interactions
Check Page Load Performance
A fast HTML response does not always mean a fast page. JavaScript may still need to fetch data, initialize the application, render interface elements, and load additional resources. Run the page in Chromium to check the full loading process and find where JavaScript starts slowing things down.
Monitor Memory Usage During Browser Workflows
Some problems only show up after a page has been running for a while. Repeated navigation, UI interactions, and dynamic content can gradually increase memory usage. Run the same workflow several times in Cloud Browser to see whether the issue appears again and how memory usage changes.
Debug JavaScript-Heavy Pages
Single-page applications and other dynamic websites often require more than inspecting their initial HTML. Use Playwright or Puppeteer to reproduce the actions that trigger an issue, such as navigation, clicks, input, or page updates. This is useful when a problem appears only after a particular sequence of browser interactions.
Connect with Playwright or Puppeteer over CDP
Floppydata Cloud Browser works with Playwright and Puppeteer through the Chrome DevTools Protocol. Connect your existing code to a remote browser session and use the same navigation, selectors, clicks, input, waits, and JavaScript execution as before.
Your tooling, our Chromium
You can work with Python or Node.js, while Chromium runs remotely on Floppydata infrastructure.
Reading metrics is the same CDP call it would be locally — the session just happens to be somewhere else.
import { chromium } from 'playwright';const browser = await chromium.connectOverCDP(connectUrl);const page = browser.contexts()[0].pages()[0];const client = await page.context().newCDPSession(page);await client.send('Performance.enable');await page.goto('https://example.com');const { metrics } = await client.send('Performance.getMetrics');import puppeteer from 'puppeteer-core';const browser = await puppeteer.connect({ browserWSEndpoint: connectUrl });const page = (await browser.pages())[0];await page.goto('https://example.com');const metrics = await page.metrics();console.log(metrics.JSHeapUsedSize, metrics.ScriptDuration);from playwright.sync_api import sync_playwrightwith sync_playwright() as p: browser = p.chromium.connect_over_cdp(connect_url) page = browser.contexts[0].pages[0] client = page.context.new_cdp_session(page) client.send('Performance.enable') page.goto('https://example.com') print(client.send('Performance.getMetrics'))A CDP session on top of the page reads the Performance domain.
Reproduce JavaScript Issues with Repeatable Browser Sessions
Debugging is easier when you can reproduce the same problem consistently. With Cloud Browser, you can repeat the same page actions across multiple sessions and check whether the issue happens again. Saved browser settings and state can also be reused when you need the same browser setup.
For larger testing workloads, Floppydata supports up to 100 simultaneous browser sessions per account.
Test JavaScript from Different Locations
Location can change what a website loads and how it behaves. Regional content, APIs, and third-party resources may work differently from one country or region to another.
Cloud Browser sessions run exclusively through Floppydata rotating proxies, so you can test the same workflow from different proxy locations.
Cloud Browser has no runtime or per-session fee. You pay only for the Floppydata proxy traffic used by your sessions.
Profile JavaScript Without Maintaining Another Chrome Environment
A cloud browser for JavaScript profiling keeps Chrome infrastructure out of your debugging workflow. Run your tests in remote Chromium, reproduce the issue, and focus on what is happening inside the page.