Evaluat fills your site with real browsers, the same kind your customers use, at the traffic you expect on your biggest day. You see what holds, what slows, and what breaks, while there is still time to fix it. Every virtual user is a real browser.
Teams we've worked with
Most load testing tools just ask your server if it answered. Evaluat opens your shop in many real browsers at your forecast peak, like real customers on real laptops, and watches what they actually see.
A checkout that slows under peak traffic sheds buyers at the exact moment you have the most of them. Evaluat rehearses your checkout at Black Friday numbers in real browsers and shows the point where it starts to drag. More on checkout under load.
Every click you pay for lands on a page. If that page is slow while the campaign runs, you paid full price for a visit that never really arrived. Test the landing page at campaign traffic before the budget goes out.
New platform, new theme, new checkout. Rebuilds often ship slower than what they replaced, and nobody notices until the numbers dip. Run the same journey on old and new, side by side, before you switch.
Analytics, reviews, chat, A/B tests. Each tag is small; together they tax every page view. The report shows which one costs you the most, so you can decide whether it earns its keep.
The email goes out, or the spot airs, and everyone arrives in the same five minutes. That shape breaks sites that handle a busy day fine. Rehearse the surge, not just the volume. More on peak readiness.
Google uses field page-experience signals, including Core Web Vitals, among other ranking factors. Evaluat measures related diagnostics under controlled load, so you can find and fix the slow pages that fight uphill for the traffic you don't pay for.
Running a store? Start with ecommerce performance testing. How the testing works
The Executive Summary gives you a plain-language verdict with a health score, the key findings ranked by severity, and recommended fixes. Alongside it, five forensic views. Web Vitals, network logs, console logs, and session video for every virtual user.
It's a session. Open it. Watch the video. Read the logs. Find the request that broke.
What's in a reportIllustrative example: product pages stayed fast throughout. Checkout slowed in the final ramp, driven by one third-party script.
*Executive Summary is not available on the Starter plan.
Build a scenario once for Performance Testing today. The same scenarios are designed to become CI smoke checks and continuous monitors when Testing Suite and Monitoring ship. Same definition, same forensic detail. Performance Testing is available through assisted private access; Testing Suite and Monitoring are planned.
Real-browser performance tests at your forecast peak. Track Core Web Vitals per session and per URL. Find what breaks before peak does.
Tour the platformRun the same scenarios as post-deploy smoke checks. Catch Web Vitals regressions before they reach customers, with the per-session detail of a full performance test.
Join the waitlistRun your scenarios continuously from chosen regions. Alert on Web Vitals regressions, with session video to debug them.
Join the waitlistConfigured once at the project level. Captured for every virtual user. Open any session and see exactly what happened.
This is the half your engineering lead will want. The full mechanics are on How it works; it's written for them.
Rehearse the checkout at several times normal traffic: 5x, 10x, or whatever your peak plan calls for. Find where it starts to drag before customers do.
Run the same journey on the old build and the new one. Compare the reports qualitatively: Web Vitals, session video, and the sessions that slowed or failed.
Track how each page behaves under load in the report. Automated pass/fail budgets that fail the run the moment a page crosses a limit are planned for Testing Suite.
Find the analytics tag, A/B test, or chat widget quietly slowing every page view. The report makes it obvious.
Run the same scenario from the UK and the EU. Compare what customers in each region actually feel.
When something breaks for a handful of shoppers, open those exact sessions and watch what happened. Minutes, not weeks.
Evaluat is agent-ready: your team's AI agents can run a real-browser speed test over the Model Context Protocol and read the results back, no API key needed. Developer and agent reference
Evaluat is a real-browser performance testing platform. Every virtual user runs in its own isolated browser instance, so you capture Core Web Vitals (LCP, INP, CLS) and Navigation Timing under load, plus full session video, network logs, and console logs for every user.
Mostly no. Reports are written in plain language for non-technical readers, and you can generate an Executive Summary when you need the verdict fast. Building a scenario happens in a visual step editor with no scripts; the one technical bit is pointing steps at the right elements with CSS selectors, which is a job for your developer or your agency. The deeper views (session video, network logs, console logs) are there for them when something needs fixing.
Three common signals. A date is coming when traffic multiplies (Black Friday, a product drop, a press or TV moment). You are changing platform, theme, or checkout. Or the site already feels slower during promotions than on a quiet Tuesday. If any of those apply, one rehearsal will tell you where you stand.
Five detail views: Overview (aggregate Web Vitals, time-series), URL performance (every URL with its own metrics), Sessions (every virtual user, individually addressable, with video), Console logs (deduplicated and counted), Network logs (every HTTP request, searchable across the run). You can generate an Executive Summary on top: a plain-language verdict with a health score, the key findings ranked by severity, and recommended fixes. See what a report contains.
k6 sends HTTP requests and measures how fast your server responds. Evaluat runs real browsers and measures what users actually see: Core Web Vitals (LCP, INP, CLS), plus FCP and the full network and console for every session. Use k6 for API load tests. Use Evaluat for the customer-facing parts of your app. See all comparisons.
Yes. That is the most common first test: a rehearsal of your real journeys (home, product, cart, checkout) at the number of simultaneous visitors you expect at peak. Generate an Executive Summary for the verdict; the session-level detail shows your team exactly what to fix. Black Friday 2026 is November 27, and fixes need shipping time, so the useful testing window closes earlier than it feels.
We don't run a self-serve trial. Every onboarding includes a 30-minute demo on your real site, with a small test run live. The report from that demo is yours to keep, whether you go ahead or not.
More answers on the FAQ page.