What powers teratail.com?
Last seen Jun 2026 · 47 technologies across 22 categories
A/B Testing
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Miscellaneous
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Widgets
Top search keywords
| Keyword | Position | Est. monthly visits |
|---|---|---|
| number picker dialog android | #89 | 5 |
| enoent | #48 | 2 |
| width body | #77 | 1 |
| wpf background image | #24 | 1 |
| yarn command not found | #71 | 1 |
| can only use dt accessor with datetimelike values | #35 | 1 |
| cannot unpack non iterable int object | #34 | 1 |
| the given key was not present in the dictionary | #90 | 1 |
| tuple object is not callable | #49 | 1 |
| typeerror: object of type tensor is not json serializable | #8 | 1 |
| type of expression is ambiguous without a type annotation | #16 | 1 |
| undefined reference to main | #35 | 1 |
| apt purge | #57 | 1 |
| armhf | #64 | 1 |
| attributeerror: can only use dt accessor with datetimelike values | #56 | 1 |
| bad operand types for binary operator | #30 | 1 |
| remote host terminated the handshake | #75 | 1 |
| saveall | #79 | 1 |
| stack smashing detected | #44 | 1 |
| no module named sklearn | #37 | 1 |
| no module named scipy | #48 | 1 |
| no module named pil | #38 | 1 |
| only length-1 arrays can be converted to python scalars | #44 | 1 |
| only length-1 arrays can be converted to python scalars | #30 | 1 |
| path to | #96 | 1 |
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
- 85% desktop
- 15% phone
Japan
Indonesia
Bangladesh
India
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
6.91 / 10 · ranked #50,135 of all domains
919 referring domains · OpenPageRank
Search traffic
40 est. monthly organic visits (US)
1,508 keywords in Google's top 30
Core Web Vitals
| LCP | 1.5 s |
| INP | 50 ms |
| CLS | 0.05 |
| TTFB | 600 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Weight: 4.3 MB · 573 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| teratail.com | 34 |
| blog.teratail.com | 15 |
| www.teratail.com | 6 |
Full technology history →
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Recent changes
- detected OpenX Jun 2026
- detected TripleLift Jun 2026
- detected Cloudflare May 2026
- detected Cloudflare Bot Management May 2026
- dropped Microsoft ASP.NET Apr 2026
- dropped 33Across Jan 2026
- dropped Amazon Advertising Dec 2025
- dropped core-js Dec 2025
- dropped ID5 Dec 2025
- dropped Cloudflare Nov 2025
- dropped Cloudflare Bot Management Nov 2025
- dropped JSS Aug 2025