Найден корректный robots.txt
Файл управления сканированием сайта роботами
?
Robots.txt указывает поисковым роботам, какие страницы сканировать, а какие — нет. Ошибки в файле могут случайно закрыть важные разделы от индексации.
Кол-во редиректов для файла robots.txt 3 слишком большое! Это может вызывать затруднение при индексации поисковыми роботами!
Проверяемая страница не запрещена в robots.txt.
Цепочка редиректов для файла robots.txt:
http://us.prairielearn.com/robots.txt
301 MovedPermanently
https://us.prairielearn.com/robots.txt
302 Found
https://us.prairielearn.com/pl/login
200 OK
Показать содержимое robots.txt
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<meta name="cookie-domain" content=".us.prairielearn.com" />
<title> PrairieLearn</title>
<link href="/assets/us-prod/main/node_modules/f5a36452276fee8a/bootstrap/dist/css/bootstrap.min.css" rel="stylesheet" />
<link
href="/assets/us-prod/main/node_modules/a38a1050d45a66fa/bootstrap-icons/font/bootstrap-icons.css"
rel="stylesheet"
/>
<link href="/assets/us-prod/main/public/6c2a4b5ed3ce70bc/stylesheets/colors.css" rel="stylesheet" />
<link href="/assets/us-prod/main/public/a5a370bb2af3150f/stylesheets/local.css" rel="stylesheet" />
<script src="/assets/us-prod/main/node_modules/332b5ada10be1415/jquery/dist/jquery.min.js"></script>
<script src="/assets/us-prod/main/node_modules/f5a36452276fee8a/bootstrap/dist/js/bootstrap.bundle.min.js"></script>
<link
href="/assets/us-prod/main/node_modules/78be53807783b6e1/@fortawesome/fontawesome-free/css/all.min.css"
rel="stylesheet"
/>
<link rel="stylesheet" href="/assets/us-prod/main/build/stylesheets/prairielearn-ui-CI4TYDS5.css" /> <script src="/assets/us-prod/main/build/scripts/application-MH6STVD2.js"></script>
<script src="/assets/us-prod/main/build/scripts/navbarClient-V2XMHSEQ.js"></script>
<style>
html,
body {
min-height: 100vh;
}
.login-container-wrapper {
width: 100%;
height: 100%;
}
.login-container {
background-color: white;
padding: 20px;
height: 100%;
}
@media (min-width: 576px) {
html,
body {
background-color: var(--bs-dark);
}
.login-container-wrapper {
max-width: 500px;
margin: auto;
height: auto;
}
.login-container {
border-radius: 5px;
box-shadow:
0 19px 38px rgba(0, 0, 0, 0.3),
0 15px 12px rgba(0, 0, 0, 0.22);
height: auto;
margin: 20px;
}
}
.subheader {
font-weight: 300;
font-size: 1.2rem;
}
.btn .social-icon {
position: absolute;
left: 7px;
height: 24px;
top: 0;
bottom: 0;
margin: auto;
}
.btn-shib {
background-color: #E84A27;
border-color: #E84A27;
color: white;
}
.btn-shib:hover {
background-color: #D04223;
border-color: #D04223;
color: white;
}
.btn-shib:focus {
box-shadow: 0 0 0 0.2rem rgba(255, 83, 0, 0.35);
}
.btn-shib:active {
background-color: #B93B1F;
border-color: #B93B1F;
color: white;
}
.institution-header {
overflow: hidden;
text-align: center;
}
.institution-header:before,
.institution-header:after {
background-color: #000;
content: '';
display: inline-block;
height: 1px;
position: relative;
vertical-align: middle;
width: 50%;
}
.institution-header:before {
right: 0.5em;
margin-left: -50%;
}
.institution-header:after {
left: 0.5em;
margin-right: -50%;
}
</style>
</head>
<body class="d-flex flex-column">
<main class="login-container-wrapper">
<div class="login-container">
<div>
<h1 class="text-center">
<a
href="https://www.prairielearn.com/"
target="_blank"
rel="noreferrer"
class="text-body"
>
PrairieLearn
</a>
</h1>
<h2 class="text-center subheader mb-5">
Sign in
</h2>
<div class="d-flex flex-column gap-2 mt-4">
<a class="btn btn-primary d-block position-relative" href="/pl/oauth2login">
<img src="/assets/us-prod/main/public/a52ccb080e95c320//images/google_logo.svg" class="social-icon" alt="" />
<span class="fw-bold">Sign in with Google</span>
</a>
<a class="btn btn-dark d-block position-relative" href="/pl/azure_login">
<img src="/assets/us-prod/main/public/a52ccb080e95c320//images/ms_logo.svg" class="social-icon" alt="" />
<span class="fw-bold">Sign in with Microsoft</span>
</a>
</div>
<div class="institution-header text-muted my-3">Institution sign-on</div>
<div class="d-flex flex-column gap-2">
<a href="/pl/auth/institution/55/saml/login" class="btn btn-outline-dark d-block w-100">
<span class="fw-bold">Bucknell University (bucknell.edu)</span>
</a>
<a href="/pl/auth/institution/616/saml/login" class="btn btn-outline-dark d-block w-100">
<span class="fw-bold">California State University, Long Beach (csulb.edu)</span>
</a>
<a href="/pl/auth/institution/617/saml/login" class="btn btn-outline-dark d-block w-100">
<span class="fw-bold">El Camino College (elcamino.edu)</span>
</a>
<a href="/pl/auth/institution/8/saml/login" class="btn btn-outline-dark d-block w-100">
<span class="fw-bold">Iowa State University (iastate.edu)</span>
</a>
<a href="/pl/azure_login" class="btn btn-outline-dark d-block w-100">
<span class="fw-bold">Oklahoma State University (okstate.edu)</span>
</a>
<a href="/pl/auth/institution/880/saml/login" class="btn btn-outline-dark d-block w-100">
<span class="fw-bold">Princeton University (princeton.edu)</span>
</a>
<a href="/pl/auth/institution/5566/saml/login" class="btn btn-outline-dark d-block w-100">
<span class="fw-bold">San Diego State University (sdsu.edu)</span>
</a>
<a href="/pl/auth/institution/781/saml/login" class="btn btn-outline-dark d-block w-100">
<span class="fw-bold">University of British Columbia (ubc.ca)</span>
</a>
<a href="/pl/auth/institution/10/saml/login" class="btn btn-outline-dark d-block w-100">
<span class="fw-bold">University of California, Berkeley (berkeley.edu)</span>
</a>
<a href="/pl/oauth2login" class="btn btn-outline-dark d-block w-100">
<span class="fw-bold">University of California Davis (ucdavis.edu)</span>
</a>
<a href="/pl/auth/institution/88/saml/login" class="btn btn-outline-dark d-block w-100">
<span class="fw-bold">University of California San Diego (ucsd.edu)</span>
</a>
<a href="/pl/auth/institution/484/saml/login" class="btn btn-outline-dark d-block w-100">
<span class="fw-bold">University of California, Santa Barbara (ucsb.edu)</span>
</a>
<a href="/pl/auth/institution/717/saml/login" class="btn btn-outline-dark d-block w-100">
<span class="fw-bold">University of California, Santa Cruz (ucsc.edu)</span>
</a>
<a href="/pl/auth/institution/3/saml/login" class="btn btn-outline-dark d-block w-100">
<span class="fw-bold">University of Illinois Urbana-Champaign (UIUC)</span>
</a>
<a href="/pl/auth/institution/6/saml/login" class="btn btn-outline-dark d-block w-100">
<span class="fw-bold">University of Maryland (umd.edu)</span>
</a>
<a href="/pl/auth/institution/14/saml/login" class="btn btn-outline-dark d-block w-100">
<span class="fw-bold">University of Michigan (umich.edu)</span>
</a>
<a href="/pl/auth/institution/253/saml/login" class="btn btn-outline-dark d-block w-100">
<span class="fw-bold">University of Pennsylvania (upenn.edu)</span>
</a>
<a href="/pl/auth/institution/3157/saml/login" class="btn btn-outline-dark d-block w-100">
<span class="fw-bold">University of Victoria (uvic.ca)</span>
</a>
<a href="/pl/auth/institution/724/saml/login" class="btn btn-outline-dark d-block w-100">
<span class="fw-bold">University of Virginia (virginia.edu)</span>
</a>
<a href="/pl/auth/institution/121/saml/login" class="btn btn-outline-dark d-block w-100">
<span class="fw-bold">University of Wisconsin - Madison (wisc.edu)</span>
</a>
<a href="/pl/auth/institution/3190/saml/login" class="btn btn-outline-dark d-block w-100">
<span class="fw-bold">York University (yorku.ca)</span>
</a>
</div>
</div>
</div>
</main>
</body>
</html>
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