Features
Bulk Performance Monitoring
Audit thousands of URLs — not just one.
Stop checking pages manually. psiLynx runs Lighthouse at scale and gives you a complete picture of your site's performance in minutes.
Import URLs Step 1 of 3
📄 CSV File
Selected
🗺 Sitemap URL
✏️ Paste URLs
✓ 1,247 URLs ready to check
Bulk Audits & Flexible Import
Import URLs via CSV, sitemap, or paste — then run mobile and desktop Lighthouse audits across your entire list with one click.
Read the docs → Performance · example.com 8 weeks
W1
W2
W3
62 W4
W5
W6
W7
W8
↓ Regression on W4 ✓ Recovered
Performance History & Regression Tracking
Track every score over time. Compare results before and after deploys to catch regressions before they affect your rankings or users.
Read the docs → Page Types · 767 URLs Avg score
Home 1 URL
94
Product 248 URLs
71
Blog 512 URLs
88
Checkout 6 URLs
43
Analysis by Page Type
Group URLs by template — product pages, blog, checkout. Pinpoint exactly which page type is dragging your score down.
Read the docs → Field Data · example.com Weekly
Lab Field
LCP 1.8s Good
INP 248ms Fair
CLS 0.04 Good
FCP 3.2s Poor
Real User Data, Not Just Lab Results
Lighthouse simulates load. CrUX shows what real Chrome users actually experience — pulled from Google automatically every week.
Read the docs → Issues · /checkout 3 issues
High Render-blocking scripts
Delays LCP by ~1.4s · affects all users
→ Add defer to 3 scripts in <head>
Med Images not lazy-loaded
Wastes 340KB on initial load
Low No explicit font-display
Minor CLS on font swap
Issues & Recommendations
After every check, psiLynx surfaces the exact problems and tells you what to fix first — ranked by impact, not just by score.
Read the docs → Compare · Before vs After May 18 → May 25
↑ 12 improved ↓ 3 regressed = 8 no change
43 → 71 +28
88 → 61 −27
79 → 91 +12
Before & After Comparison
Select any two batch runs and instantly see which URLs improved and which regressed — down to every metric, after any deploy.
Read the docs → Reporting & Notifications
Share results, stay ahead of issues.
Turn performance data into client-ready reports, get instant alerts on regressions, and keep your whole team in sync.
Performance Report
example.com
April 2025 · 12 URLs · Avg score: 87
Share link
Copy
🔗 Anyone with this link can view — no login required
↓ PDF
↓ CSV
PDF Reports & Shareable Links
Generate client-ready PDF reports with scores, trends, and top issues. Or share a live HTML report link — no login required for the recipient.
Read the docs → Alerts
Email Slack
↓
Regression detected
example.com/checkout · -27 pts
✓
Check complete
500 URLs · Mobile + Desktop
⚠
Score below threshold
3 URLs dropped under 50
Regression Alerts
Get notified the moment scores drop. Email, Slack, or webhook — catch performance problems before your clients or users do.
Read the docs → Team · Pro Workspace 3 / 3 seats
AK
Alex K. Admin SM
Sara M. Editor JL
Jake L. Viewer + Invite team member
Team Collaboration
Invite teammates or clients to your workspace. Share projects, assign URL lists, and keep everyone aligned on performance goals.
Read the docs → Uptime Monitoring 3 monitors
example.com UP 99.9%
example.com/shop DEGRADED 87.2%
example.com/checkout UP 100%
⚠ DEGRADED alert sent 14 min ago
Uptime Monitoring
Know your site is reachable before you run a performance check. Monitors per URL — UP, DOWN, or DEGRADED when a maintenance page is served.
Read the docs → Schedules · example.com Pro
Weekly · Monday 8:00 AM
All 247 URLs · Mobile + Desktop
✓ Last run Mon 08:02 — Completed
Daily · 6:00 AM
12 priority URLs · Paused
Next scheduled run
Mon, Jun 9 · 8:00 AM
in 4 days, 11 hours
Scheduled Checks
Set it and forget it. psiLynx runs audits on your schedule — daily, weekly, or custom cron — and results are waiting when you open the dashboard.
Read the docs → Why teams switch to psiLynx
Built around the problems you already have
1,000 pages. 20 minutes. Not 2 days.
Import via CSV, sitemap, or paste. psiLynx runs every URL on mobile and desktop simultaneously. What used to take days is done before lunch.
Did the deploy break it? You shouldn't have to ask.
Every batch is timestamped. Compare scores before and after a deploy and see exactly when the regression started — no guesswork required.
Your client will ask about Core Web Vitals. Have the answer.
LCP, CLS, and INP pass rates across every URL in the project. One number that tells the whole story — no explaining raw Lighthouse JSON.
Still copy-pasting scores into a spreadsheet?
Export every result as CSV with LCP, CLS, INP, FCP, TTFB, and Speed Index. Your data, your way — ready for further analysis or client reporting.
FAQs
Questions buyers actually ask
Still not sure? These are the questions we hear most from teams before they sign up.
One check = one URL audited on one device (mobile or desktop). Since psiLynx always runs both platforms in parallel, each URL in a batch consumes 2 checks. Quotas reset every Monday. You'll receive an email warning at 80% usage so you're never caught off guard. If you need more capacity mid-week, you can upgrade your plan at any time — the new limit applies immediately.
Yes. Every project report can be shared via a public link — no login, no registration required for the recipient. Just send the link and your client sees the full report: scores, trends, Core Web Vitals pass rates, and top issues. You can also export a PDF if you prefer to attach it to an email or a presentation.
psiLynx uses the official Google PageSpeed Insights API, which runs the same Lighthouse engine as Chrome DevTools — but from Google's own servers under controlled, reproducible conditions. Local DevTools scores can vary based on your machine, browser extensions, and network. API scores are generally more stable and closer to what Google uses for ranking signals, making them a more reliable baseline for monitoring.
CrUX (Chrome UX Report) data is updated weekly by Google. psiLynx pulls the latest field data automatically — you don't need to trigger it manually. Each project's CrUX metrics refresh every Monday alongside the Chrome UX Report cycle.
Yes. Scheduled checks are available on Pro and Business plans. You can set up daily, weekly, or custom cron schedules — and results are ready the next time you open the dashboard. For deploy-triggered automation, you can also trigger a batch via the psiLynx API.
DEGRADED means the URL returned HTTP 200 but the page content changed significantly — typically a maintenance page, error overlay, or partial outage. It's a signal that the server is responding but the site isn't functioning normally. You'll receive an alert the same as a full DOWN event.
Select any two batch runs — for example, the run before a deploy and the run after — and psiLynx compares every URL side by side. You instantly see which pages improved, which regressed, and which stayed the same, with the exact score delta for every metric.
Your scores are changing right now. Are you watching?
Set up automated Lighthouse monitoring in minutes. Free plan available. No credit card required.