How to block LinkPreview
Operated by Interactive32. is a bot operated by Interactive32 that fetches web page metadata to generate link previews with titles, descriptions, and images for developers using the Lin… Fetcher Retrieves web page metadata to power app features like link previews or feeds
How it identifies itself
Chatwork LinkPreview v1
robots.txt
What the agent asks to be told. It obeys this or it does not — nothing enforces it.
User-agent: LinkPreview Disallow: /
nginx
In the server block, then reload.
# In the server block. 403 rather than 444: a closed connection tells the
# operator nothing, and an agent that gets a status code can log it.
if ($http_user_agent ~* "(LinkPreview|Chatwork LinkPreview v1)") {
return 403;
}
Apache
In .htaccess or the vhost.
BrowserMatchNoCase "LinkPreview" bad_bot
BrowserMatchNoCase "Chatwork LinkPreview v1" bad_bot
<RequireAll>
Require all granted
Require not env bad_bot
</RequireAll>
Cloudflare
Security → WAF → Custom rules.
# Security → WAF → Custom rules, action: Block (http.user_agent contains "LinkPreview") or (http.user_agent contains "Chatwork LinkPreview v1")
WordPress
A child theme's functions.php, or a small plugin.
// functions.php of a child theme, or a small plugin. Runs before WordPress
// builds the page, so a blocked agent costs one PHP process and no queries.
add_action('init', function () {
$agent = $_SERVER['HTTP_USER_AGENT'] ?? '';
foreach (['LinkPreview', 'Chatwork LinkPreview v1'] as $needle) {
if (stripos($agent, $needle) !== false) {
status_header(403);
exit('Blocked: LinkPreview');
}
}
});
robots.txt is a request. The rules below it are the wall.
LinkPreview publishes a token, so the directive above will work for as long as it keeps honouring it — and nothing except its own good manners makes it. The server rules match on a header the requester sets, which stops the agent that says who it is and not the one that copies somebody else's name. Botscope verifies identity against DNS and published address ranges, records which check decided each request, and shows you the ones that lied.