Published on 2025-08-07T06:18:08Z

FlipboardProxy

FlipboardProxy is the official web crawler for Flipboard, the popular social magazine and content aggregation app. Its function is to fetch articles, metadata, and images from websites to create the rich, visual previews that are displayed within the Flipboard app. This activity is triggered by user interest in your content and can serve as a significant source of referral traffic for publishers and bloggers.

What is FlipboardProxy?

FlipboardProxy is the web crawler for Flipboard, the social magazine app that aggregates content into a personalized reading experience. The bot's job is to fetch, process, and present web content within the Flipboard application. It identifies itself in server logs with a distinctive user-agent string like Mozilla/5.0 (...) Gecko/20100101 Firefox/49.0 (FlipboardProxy/1.2; +http://flipboard.com/browserproxy). The crawler operates from Amazon Web Services infrastructure and often makes sequential requests to retrieve a page's HTML and its associated assets, like images and stylesheets.

Why is FlipboardProxy crawling my site?

FlipboardProxy is visiting your site because Flipboard users have shown interest in your content. This can happen when a user adds your site to their Flipboard feed, your content is widely shared on social media platforms that Flipboard monitors, or your site's RSS feed is indexed by the service. The crawler looks for article content, metadata, and images to generate the rich previews that are a core feature of the Flipboard app. The frequency of visits depends on your site's popularity among Flipboard users.

What is the purpose of FlipboardProxy?

The purpose of FlipboardProxy is to support Flipboard's core service of aggregating content into a personalized "social magazine." The crawler collects and processes web content to create optimized previews within the app, allowing users to discover and engage with your content. When a user is interested in a preview, they can tap through to view the full article on your website. For publishers, this can be a valuable source of referral traffic and a way to reach a new audience through Flipboard's content discovery mechanisms.

How do I block FlipboardProxy?

If you wish to prevent FlipboardProxy from accessing your site, you can add a disallow rule to your robots.txt file. Note that this will prevent previews of your content from being generated within the Flipboard app.

To block FlipboardProxy, add the following lines to your robots.txt file:

User-agent: FlipboardProxy
Disallow: /

How to verify the authenticity of the user-agent operated by Flipboard?

Reverse IP lookup technique

To verify user-agent authenticity, you can use host linux command two times with the IP address of the requester.
  1. > host IPAddressOfRequest
    This command returns the reverse lookup hostname (e.g., 4.4.8.8.in-addr.arpa.).
  2. > host ReverseDNSFromTheOutputOfFirstRequest
If the output matches the original IP address and the domain is associated with a trusted operator (e.g., Flipboard), the user-agent can be considered legitimate.

IP list lookup technique

Some operators provide a public list of IP addresses used by their crawlers. This list can be cross-referenced to verify a user-agent's authenticity. However, both operators and website owners may find it challenging to maintain an up-to-date list, so use this method with caution and in conjunction with other verification techniques.