All corrections
Substack May 6, 2026 at 07:43 PM

cardcatalogforlife.substack.com/p/google-has-a-secret-reference-desk

1 correction found

1
Claim
supports all the operators covered above.
Correction

DuckDuckGo does not support all of the Google-specific operators discussed earlier. Its own help pages document a smaller set of operators, and DuckDuckGo says even those are not working perfectly on all queries.

Full reasoning

DuckDuckGo’s official advanced syntax page lists the search operators it supports: exact quotes, -, +, filetype:, site:, -site:, intitle:, and inurl:. It does not list several Google-specific features/operators discussed earlier in the article, such as Verbatim mode, before: / after: date operators, AROUND(#), or the @ social-handle search syntax. DuckDuckGo’s separate date-filter help page also shows that date limiting is done through a date filter dropdown / custom date range, not the Google before: / after: operator.

So the categorical claim that DuckDuckGo “supports all the operators covered above” is inaccurate. Even DuckDuckGo’s own syntax page adds that some of its advanced syntax “isn't operating 100% correctly on all queries.”

2 sources
  • How to use advanced syntax on DuckDuckGo Search - DuckDuckGo Help Pages

    DuckDuckGo supports search syntax you can use to fine-tune your queries... `"cats and dogs"` ... `cats -dogs` ... `cats +dogs` ... `cats filetype:pdf` ... `dogs site:example.com` ... `cats -site:example.com` ... `intitle:dogs` ... `inurl:cats` ... Please note: we are aware some of our advanced syntax isn't operating 100% correctly on all queries.

  • How To Sort DuckDuckGo Search Results by Date - DuckDuckGo Help Pages

    When searching on DuckDuckGo, you have the ability to limit search results to a certain timeframe... you can select that option from the date filter dropdown below the search box. You can even enter a custom date range.

Model: OPENAI_GPT_5 Prompt: v1.16.0