What powers castr.com?
Last seen Jun 2026 · 58 technologies across 25 categories
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Top search keywords
| Keyword | Position | Est. monthly visits |
|---|---|---|
| 16:9 | #5 | 1,300 |
| 16:9 aspect ratio | #3 | 790 |
| castr | #1 | 580 |
| castr | #1 | 580 |
| internet protocol television | #15 | 560 |
| 16/9 | #6 | 460 |
| restream alternatives | #1 | 180 |
| hls encoder | #1 | 150 |
| bitrate calculator | #2 | 140 |
| rtmp server | #2 | 140 |
| hd or sd | #8 | 130 |
| restream | #69 | 130 |
| bitrate streaming calculator | #1 | 120 |
| vod platforms | #1 | 120 |
| stream bitrate calculator | #1 | 120 |
| bitrate | #9 | 99 |
| twitch video bitrate | #3 | 97 |
| twitch bitrate | #3 | 97 |
| restream alternative | #1 | 97 |
| 30 vs 60 fps | #3 | 97 |
| stream bitrate | #2 | 96 |
| stream key | #5 | 89 |
| 3g-sdi | #1 | 89 |
| multistream | #8 | 87 |
| mpeg transport stream | #3 | 70 |
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
- 82% desktop
- 18% phone
Nigeria
United States
India
Germany
United Kingdom
Brazil
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
6.98 / 10 · ranked #46,362 of all domains
716 referring domains · OpenPageRank
Search traffic
14,400 est. monthly organic visits (US)
6,178 keywords in Google's top 30
Core Web Vitals
| LCP | 1.8 s |
| INP | 100 ms |
| CLS | 0 |
| TTFB | 600 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: English (United States)
- CDN: Fastly
- Weight: 3.0 MB · 100 requests
- WordPress theme: castr_2020 · all themes
- Structured data: JSON-LD, Microdata, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| player.castr.com | 40 |
| castr.com | 29 |
| developers.castr.com | 15 |
| docs.castr.com | 14 |
Full technology history →
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Recent changes
- detected OptinMonster Jun 2026
- dropped jsDelivr May 2026
- dropped OptinMonster May 2026
- detected Priority Hints May 2026
- dropped wpCache May 2026
- detected Emotion Mar 2026
- dropped Algolia Feb 2026
- dropped Reddit Ads Feb 2026
- dropped Twitter Ads Feb 2026
- detected wpCache Feb 2026
- detected Tailwind CSS Jan 2026
- detected Sendgrid Oct 2025