What powers sfopera.com?
Last seen Jun 2026 · 81 technologies across 33 categories
A/B Testing
Zoho PageSense
since Mar 2024
Accessibility
UserWay
since Jan 2025
Advertising
Microsoft Advertising
since Nov 2025
Reddit Ads
since May 2026
Analytics
Azure Monitor
since Jun 2025
Crazy Egg
since Jun 2018
Google Ads Conversion Tracking
since Jul 2021
Google Analytics
since Jun 2018
Microsoft Clarity
since Mar 2026
Monsido
since Oct 2022
TikTok Pixel
since Sep 2024
Authentication
Facebook Login
since Nov 2022
Caching
Varnish
since Jan 2025
CDN
Amazon CloudFront
since Jan 2023
Amazon S3
since Jan 2023
cdnjs
since Dec 2023
Cloudflare
since Oct 2020
Fastly
since Jan 2025
jQuery CDN
since Feb 2022
jsDelivr
since Jul 2020
Unpkg
since Aug 2022
CMS
Optimizely Content Management
since Apr 2018
Cookie compliance
CRM
Zoho
since Mar 2024
Databases
MariaDB
since Jan 2025
Ecommerce
Cart Functionality
since Aug 2020
Shopify
since Jan 2021
ActiveCampaign
since Feb 2023
Font scripts
Bootstrap Icons
since Jan 2025
JavaScript frameworks
Zone.js
since Jan 2023
JavaScript libraries
Miscellaneous
Operating systems
Windows Server
since Jun 2018
PaaS
Payment processors
American Express
since Jan 2021
Mastercard
since Nov 2022
PayPal
since Dec 2025
Shop Pay
since Jan 2021
Visa
since Jan 2021
Performance
Priority Hints
since Feb 2023
Programming languages
PHP
since Jan 2025
TypeScript
since Jan 2023
RUM
Microsoft Application Insights
since Apr 2026
Security
Cloudflare Bot Management
since Nov 2021
HSTS
since Nov 2022
Segmentation
Adobe Audience Manager
since Apr 2022
Shopify apps
In Cart Upsell & Cross-Sell
since Nov 2022
Locksmith
since Nov 2022
Tag managers
Google Tag Manager
since Apr 2018
UI frameworks
Video players
Web frameworks
Web servers
Webmail
Microsoft 365
since Aug 2022
Widgets
Top search keywords
| Keyword | Position | Est. monthly visits |
|---|---|---|
| operatic vocals | #1 | 3,700 |
| opera | #10 | 1,900 |
| opera solo | #2 | 1,200 |
| war memorial opera house | #4 | 1,200 |
| barber of seville opera | #3 | 1,200 |
| aria music definition | #4 | 650 |
| barber of seville | #5 | 570 |
| war memorial opera house san francisco | #1 | 550 |
| san francisco war memorial opera house | #1 | 550 |
| san francisco opera schedule | #1 | 490 |
| the magic flute | #7 | 460 |
| rigoletto | #6 | 410 |
| rossini barber of seville | #6 | 410 |
| san francisco opera house | #1 | 400 |
| san francisco opera tickets | #2 | 390 |
| italian opera | #2 | 390 |
| war memorial opera house | #8 | 360 |
| the barber of seville | #4 | 360 |
| the magic flute opera | #7 | 350 |
| monkey king sun wukong | #11 | 340 |
| voice types | #7 | 310 |
| tristan and isolde | #10 | 310 |
| sf opera schedule | #2 | 260 |
| aria definition | #7 | 250 |
| the handmaid's tale | #14 | 210 |
The site's top keywords in Google (US), with the visits each one is estimated to bring per month.
Top backlinks
Top links pointing at the site, one per source domain, strongest first. The anchor text opens the page carrying the link.
Audience
- 57% desktop
- 41% phone
- 2% tablet
United States
Germany
United Kingdom
France
Canada
Spain
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
7.27 / 10 · ranked #29,377 of all domains
505 referring domains · OpenPageRank
Search traffic
37,500 est. monthly organic visits (US)
11,895 keywords in Google's top 30
Core Web Vitals
| LCP | 2 s |
| INP | 125 ms |
| CLS | 0.1 |
| TTFB | 1300 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: English
- CDN: Cloudflare
- Weight: 23.1 MB · 98 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| www.sfopera.com | 29 |
| sfopera.com | 28 |
| shop.sfopera.com | 22 |
| frontrow.sfopera.com | 18 |
| archive.sfopera.com | 17 |
| pac.sfopera.com | 10 |
Full technology history →
Report an incorrect detection
Recent changes
- detected Cookiebot Jun 2026
- detected Microsoft Advertising Jun 2026
- detected Reddit Ads May 2026
- dropped Cookiebot Apr 2026
- dropped Microsoft Advertising Apr 2026
- detected Microsoft Application Insights Apr 2026
- detected Microsoft Clarity Mar 2026
- detected YouTube Feb 2026
- detected Zoho Feb 2026
- detected Zoho PageSense Feb 2026
- detected Cookiebot Nov 2025
- detected Microsoft Advertising Nov 2025
- dropped Boomerang Oct 2025
- dropped YouTube Aug 2025