Google: Do Not Use Robots.txt To Block Indexing Of URLs With Parameters

Nov 8, 2019 - 7:28 am 10 by

Lines Google

Google's John Mueller said you should absolutely not "use robots.txt to block indexing of URLs with parameters." He said if you do that then Google "cannot canonicalize the URLs, and you lose all of the value from links to those pages." Instead use rel-canonicals and link consistently throughout your site.

John said this on Twitter, here is an embed of the tweet:

He then had a follow up about why it is so bad to block these URLs with robots.txt:

So be careful about this and double check all of these things on your web sites.

Forum discussion at Twitter.

 

Popular Categories

The Pulse of the search community

Search Video Recaps

 
- YouTube
Video Details More Videos Subscribe to Videos

Most Recent Articles

Web Analytics

Google Analytics Real Time Reporting Broken Again

Jul 17, 2025 - 10:40 am
Search Forum Recap

Daily Search Forum Recap: July 17, 2025

Jul 17, 2025 - 10:00 am
Google

Google AI Mode Gets Gemini 2.5 Pro & Deep Search For A Fee

Jul 17, 2025 - 7:51 am
Google

Google Discover Officially Gets AI-Generated Summaries

Jul 17, 2025 - 7:41 am
Google

How The Google Ask For Me Feature Works & New AI Local Calling

Jul 17, 2025 - 7:31 am
Google

Google Tests Much Larger Favicons In Search

Jul 17, 2025 - 7:21 am
Previous Story: Google Ads Editor v1.2 Adds New Campaign Types & Cross-Account Features