Bingbot tester: check how Bing crawls your page
Bing, DuckDuckGo, Yahoo, and Ecosia all pull their search results from Bingbot's index. Combined they represent around 10-15% of global search - and significantly more for B2B audiences on Microsoft Edge. If your JavaScript site is invisible to Bingbot, you are invisible to all four.
This free Bingbot tester sends a real HTTP request using Bingbot's exact user-agent and returns the raw HTML Bing receives. Bingbot's JavaScript rendering is far less consistent than Googlebot's, so pages that look fine on Google may return an empty shell here.
Paste a URL below to see exactly what Bingbot crawls from your site.
How to use this tool
- 1
Enter the URL you want to appear in Bing. Bingbot is preselected on this page.
- 2
Click 'Simulate crawl' to request the page with Bingbot's user-agent.
- 3
Check the status code and the visibility score. A redirect, an error or a challenge page here is what Bing has to index in place of your content.
- 4
Open 'Raw HTML response' and confirm the title, meta description and main copy are present without JavaScript.
- 5
Cross-check with URL Inspection in Bing Webmaster Tools, then submit the corrected URL through IndexNow or URL Submission so Bing recrawls it promptly.
How it works
The test makes a single server-side request with the header 'Mozilla/5.0 (compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm)' and shows the status, the headers and the unmodified HTML. No scripts run, so you see the document as it exists before any client-side rendering.
Microsoft moved Bingbot to an evergreen renderer based on Microsoft Edge in 2019, so it can execute modern JavaScript. Bing's webmaster guidance still recommends dynamic rendering for large or JavaScript-heavy sites, because rendering every page at scale is expensive and is not guaranteed. Treat the raw response as the safe baseline: content that is present here does not depend on Bing choosing to render the page.
Because Bing's index also supplies results to other search engines, including DuckDuckGo and Yahoo, one failed response affects several of them at once. If you get a 403, check whether your firewall validates Bingbot by IP address. Microsoft publishes its crawler address ranges and a request from our servers is not in them, so that block would not apply to the real crawler.
Understanding Bingbot
Bingbot is Microsoft's web crawler powering Bing Search, DuckDuckGo, Yahoo Search, and Ecosia. While Bing has invested in JavaScript rendering capabilities, Bingbot's rendering is less consistent than Googlebot's and often fails on complex single-page applications.
Bing's market share is often underestimated. Combined with DuckDuckGo (which uses Bing's index), Yahoo, and Ecosia, Bing-powered search represents roughly 10-15% of global search traffic. For many B2B and enterprise sites, this share is even higher because Microsoft Edge defaults to Bing.
Bingbot crawls less frequently than Googlebot and has a smaller rendering budget. This means JavaScript-heavy pages are more likely to be indexed with incomplete or missing content on Bing compared to Google. If your site relies on client-side rendering, you may be invisible on Bing even if Google indexes you correctly.
Pre-rendering ensures consistent visibility across all Bing-powered search engines without relying on Bingbot's JavaScript rendering capabilities.
Frequently asked questions
Does Bingbot execute JavaScript?▾
Bingbot has some JavaScript rendering capability, but it is less reliable than Googlebot's. Complex SPAs, lazy-loaded content, and client-side routing often fail to render correctly for Bingbot.
Why should I care about Bing if Google is bigger?▾
Bing powers multiple search engines including DuckDuckGo, Yahoo, and Ecosia. Combined, these represent 10-15% of search traffic. For B2B sites, the share is often higher due to Microsoft Edge's default search engine.
Does DuckDuckGo use Bingbot?▾
DuckDuckGo uses its own crawler (DuckDuckBot) for some features, but relies primarily on Bing's index for search results. Ensuring your content is visible to Bingbot improves your DuckDuckGo visibility.
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