Monitor Lighthouse performance across every client website, track available Core Web Vitals data, and share clear reports without rebuilding them by hand each month.
Free plan available. No credit card required.
Core Web Vitals reporting for agencies means keeping performance data for multiple client websites in one place and turning it into something clients can understand. Instead of running occasional tests, saving screenshots, and rebuilding the same slides each month, teams can keep a consistent history of audits and comparisons for every project.
psiLynx runs scheduled Lighthouse audits across selected client URLs and stores the results for later comparison. When Google has sufficient real-user data, available CrUX metrics such as LCP, INP, and CLS can provide an additional view of how visitors experience the website in the field.
Most SEO reporting software focuses on rankings, traffic, conversions, and backlinks. psiLynx adds the technical performance layer: page-level Lighthouse history, available Core Web Vitals data, regression tracking, and reports that can be shared with clients.
Start with one client website on the free plan. No credit card required.
Manually testing one client website is manageable. Repeating the same process across an entire client portfolio is not. As the number of projects and monitored URLs grows, teams either spend hours rerunning tests or reduce the audit to a few homepages and occasional screenshots.
That leaves large parts of the portfolio without a consistent performance history. A product template, landing page, article section, or ecommerce category can decline while the homepage remains stable and the agency is focused on another account.
Each client website can be managed as a separate project with its own URL list, audit schedule, device profiles, and historical results. This keeps client data separated while giving the agency one place to review the complete portfolio.
Account managers can check reporting status, SEO specialists can investigate page-level changes, and developers can review the runs where a regression first appeared. Everyone works from the same recorded results instead of reconstructing the story from screenshots and forwarded messages.
psiLynx keeps the technical performance workflow inside one project: import the client's URLs, run repeatable audits, compare the results, investigate regressions, and share the outcome with the client.
Import URLs from a sitemap or CSV file, or paste a custom list. Include representative pages from every important template instead of monitoring only the homepage.
Test the selected URLs on mobile and desktop using a consistent schedule. Every completed run adds another point to the client’s performance history.
Review exact differences between comparable runs and identify the URLs, page groups, and device profiles where performance declined or improved.
Send the client a public report link or export the available report format for a monthly update, performance review, or renewal discussion.
Keep every client website in a separate project with its own URL list, schedule, device results, and performance history. Project and URL limits depend on the selected plan.
Share a public report link without asking the client to create an account. Use the report to show current Lighthouse results, available Core Web Vitals data, historical changes, and the pages that need attention.
Give account managers, SEO specialists, and developers access to the same project history and comparisons. Available team seats depend on the selected plan.
A Lighthouse report is useful only when the test conditions and page sample are clear. Running one test for a homepage and presenting it as the condition of the entire website can hide serious problems across product pages, categories, articles, and landing page templates.
psiLynx runs Lighthouse audits across selected client URLs and stores the page-level results. Agencies can compare runs, review mobile and desktop performance separately, and identify whether a change affects one page or a repeated website template.
Scheduled audits reduce the manual work involved in Lighthouse reporting, but they do not remove the need for interpretation. The report shows what changed and where it appeared. The agency still provides the technical context, prioritisation, and recommended action.
Lighthouse provides controlled lab results for every client URL that can be tested. These audits help agencies compare pages under consistent conditions, investigate technical issues, and detect changes between scheduled runs.
Core Web Vitals field data comes from real Chrome users through CrUX. It can include LCP, INP, and CLS, but it is available only when Google has collected sufficient data for the relevant URL or origin. It does not update each time a Lighthouse audit runs.
A complete client performance report should keep these sources separate. Lighthouse helps explain how tested pages behave under controlled conditions, while CrUX shows how eligible pages or origins perform for real users over time.
| Lighthouse reporting | Core Web Vitals reporting |
|---|---|
| Controlled lab testing | Aggregated real-user field data |
| Available for every testable URL | Available only when CrUX has sufficient data |
| Can run on an agency schedule | Updates according to the CrUX data cycle |
| Useful for technical diagnostics | Useful for understanding real-user experience |
| Supports comparisons between audits | Shows field LCP, INP, and CLS |
| Includes additional lab metrics and opportunities | Does not provide a full Lighthouse diagnostic report |
Performance work is difficult to demonstrate with a current score alone. A client needs to see what changed, which pages improved, and whether the improvement remained visible in later audits.
psiLynx stores historical Lighthouse results for monitored URLs. Agencies can select comparable runs, review exact differences, and show how performance changed after an optimisation project, redesign, migration, or technical fix.
A before-and-after comparison shows that performance changed during the selected period. It does not automatically prove that every difference was caused by one implementation. Server conditions, dynamic content, third-party resources, and normal Lighthouse variability can also affect the result.
Client reporting should show more than a current score. Historical comparisons help agencies explain what was fixed, where performance improved, and which issues still require work.
Compare selected runs and show how monitored URLs changed during the reporting period. Page-level results are more useful than a vague claim that the website now "feels faster."
Scheduled audits and alerts help the agency identify performance declines without waiting for the next manual review. The affected URLs and first changed run provide a clearer starting point for investigation.
Reuse recorded results, comparisons, public links, and available exports instead of rebuilding the technical performance section from screenshots every month.
Technical work is easier to defend when the agency can show a recorded baseline, the pages that were changed, and the results collected after implementation. A client-ready report turns performance work from an invisible maintenance task into documented progress.
For monthly reviews, agencies can show the current condition of monitored pages, changes since the previous period, available Core Web Vitals field data, and unresolved regressions. For renewals, a longer comparison can demonstrate how the website changed across several months of work.
psiLynx provides the recorded performance data. The agency adds the work completed, business context, and recommended next steps.
SEO reporting tools for agencies usually combine rankings, organic traffic, conversions, backlinks, and technical audit data. psiLynx does not replace that complete reporting stack. It provides the web performance layer that general SEO platforms often reduce to an occasional audit or a current score.
Agencies can use psiLynx alongside their existing SEO reporting software to monitor Lighthouse performance across client URLs, review available Core Web Vitals data, identify regressions, and add technical performance evidence to client reports.
What agencies ask before moving a client portfolio onto psiLynx.
Put every client site on watch.
Add your first client website, run Lighthouse audits across important URLs, and build a performance history you can use in client reports. Start free, with no credit card required.