Understand what slows a page down—and what to fix first
Knotvo combines HAR inspection, Lighthouse measurements and Core Web Vitals context in a focused Mac application for SEO and web teams.
🍎 Coming to the Mac App Store · macOS 14+ · Apple Silicon and Intel
See site health at a glance
The overview combines the performance score, the three most expensive bottlenecks and the estimated gain from completing the highest-priority work.
Actions, not unexplained metrics
Knotvo explains what a finding means, why it matters and how to fix it instead of leaving interpretation to the user.
Live measurement, step by step
Enter a public URL and Knotvo validates the address, connects to PageSpeed Insights, checks CrUX field data, processes Lighthouse and interprets Core Web Vitals.
See where every request loses time
The waterfall exposes DNS, connection, TLS, waiting and download time for each request, together with blocking chains and failed resources.
A filterable request inventory
Inspect all requests in a sortable table and isolate scripts, images, fonts, third parties, failures or the heaviest resources.
A report ready for stakeholders
Turn analysis into a clear report that explains priorities, expected gains and implementation evidence without requiring the reader to understand raw HAR data.
The complete workflow in one Mac app
Lab and field data together
Compare Lighthouse lab results with real-user Core Web Vitals and understand which signal affects search.
Share-safe HAR copies
Remove cookies, Authorization headers, tokens and body secrets without altering the original file.
Compare two HAR files
Measure before and after a release to find new weight, timing regressions or failed requests.
Brand workspace
Manage multiple brands and sites, keep scan history and monitor changes over time.
Multi-URL comparison
Measure several public URLs and compare the results in one view.
Private by default
HAR analysis stays on your Mac; only an optional public live URL is sent to Google.
Why teams choose Knotvo
How Knotvo compares
Cloud speed tests
Useful for public lab tests, but typically require accounts, quotas and cannot inspect private pages or local HAR workflows.
Network capture tools
Powerful for capturing requests, but they do not translate performance evidence into prioritized SEO and development actions.
Free HAR viewers
They open waterfalls but usually lack recommendations, comparison, field data context and secure sanitization workflows.
Frequently asked questions
What does Knotvo do?
It analyzes HAR files and optional live measurements, then turns requests, Core Web Vitals and third-party load into a prioritized action list.
Does my HAR go to the cloud?
No. HAR analysis is entirely local. Only a public URL is sent to Google when you explicitly run live measurement.
Can I test localhost or staging?
Yes. Capture a HAR in the browser and open it in Knotvo. Live measurement itself requires a public URL.
Can I share a HAR safely?
Use Share-Safe Copy to remove cookies, authorization data and tokens while preserving your original file.
Which devices are supported?
Knotvo targets macOS 14 and later on Apple Silicon and Intel Macs.