--- title: Pixalate Releases Q1 2018 Ads.txt Trends Report description: How many publishers are using the IAB's ads.txt, and which exchanges are used most often? Pixalate's Q1 2018 Ads.txt Trends Report provides a comprehensive update. image: https://www.pixalate.com/hubfs/Blog_Media/Blog%20photos/q1-2018-ads-txt-report-header.png --- [![pixalate-full-logo](https://www.pixalate.com/hs-fs/hubfs/Pixalate_Logos/pixalate-full-logo.jpg?width=150&height=60&name=pixalate-full-logo.jpg "pixalate-full-logo")](https://www.pixalate.com) Search **Menu** ** ** ![](https://www.pixalate.com/hubfs/Blog_Media/Blog%20photos/q1-2018-ads-txt-report-header.png) [Research Reports](https://www.pixalate.com/blog/topic/research-reports) | 2 min read # Pixalate Releases Q1 2018 Ads.txt Trends Report Written by [Tyler Loechner](https://www.pixalate.com/blog/author/tyler-loechner) Apr 17, 2018 9:00:00 AM Pixalate this week released its [Q1 2018 Ads.txt Trends Report](https://info.pixalate.com/ads-txt-q1-2018-trends-report). The report features data and insights collected by Pixalate detailing the state of ads.txt adoption over the first quarter of 2018. The industry-wide ads.txt effort was born in the IAB's Tech Lab and has created overnight transparency for buyers into the programmatic advertising ecosystem of sellers and domains. ### Ads.txt adoption increased 269% during Q1 2018 ![q1-2018-sites-with-ads-txt](https://www.pixalate.com/hs-fs/hubfs/Blog_Media/Blog%20photos/q1-2018-sites-with-ads-txt.png?width=640&height=320&name=q1-2018-sites-with-ads-txt.png) According to Pixalate's data, ads.txt adoption increased 269% in Q1 2018, rising from fewer than 100,000 total sites with ads.txt on January 1, 2018 to over 300,000 sites with ads.txt by March 31, 2018.  [![ads-txt-2017-trends-report](https://no-cache.hubspot.com/cta/default/2364596/59e1928b-9f01-4978-b862-51b354c3d90d.png)](https://cta-redirect.hubspot.com/cta/redirect/2364596/59e1928b-9f01-4978-b862-51b354c3d90d) ### Inside the report, you'll find... - Ads.txt adoption trends from **January-March 2018 **(Q1 2018) - Insight into ads.txt adoption among the **top 1000 and top 5000** sites in terms of programmatic ad volume - Insight into the **Alexa 1000 and 5000** sites and their ads.txt adoption rates on a week-by-week basis - Data on which **exchanges show up most often on ads.txt files** - Including which exchanges are listed most often as a **direct** partner, or as a **reseller** - And much more ### Report highlights: ![q1-2018-ads-txt-report-header](https://www.pixalate.com/hs-fs/hubfs/Blog_Media/Blog%20photos/q1-2018-ads-txt-report-header.png?width=640&height=320&name=q1-2018-ads-txt-report-header.png) - According to Pixalate's data, on January 1, 2018, the total number of sites with an ads.txt file was **89,638** - That number rose to **331,155** by March 31, 2018, representing a rise of **269%** - Of the top 5,000 sites in terms of programmatic ad volume, ads.txt adoption **increased from about 47% in January to about 67% in March** - Over 70% of the top 1,000 sites in terms of programmatic ad volume now have ads.txt - Similar to Q4 2017, **Google** is the exchange most often listed as a "direct" partner on ads.txt files among the top programmatic publishers, while **AppNexus** is the exchange most often listed as a "reseller," according to Pixalate's data Pixalate has posted weekly [ads.txt updates](https://www.pixalate.com/topic/ads-txt) via its blog throughout Q1 2018,  and has made available for download a list containing all [publishers who have an ads.txt file](https://info.pixalate.com/publishers-with-ads-dot-txt), as observed by Pixalate. This list is updated weekly. [![ads-txt-2017-trends-report](https://no-cache.hubspot.com/cta/default/2364596/59e1928b-9f01-4978-b862-51b354c3d90d.png)](https://cta-redirect.hubspot.com/cta/redirect/2364596/59e1928b-9f01-4978-b862-51b354c3d90d) *Want more data-driven insights? Sign up for our blog! * ### Search Blog Search ### Follow Pixalate ### Subscribe to our blog *By entering your email address and clicking Subscribe, you are agreeing to our [Terms of Use ](https://www.pixalate.com/terms)and [Privacy Policy.](https://www.pixalate.com/privacypolicy) Previous Story [← Major publishers are still adopting ads.txt](https://www.pixalate.com/blog/ads-txt-adoption-trends-weekly-data-april-16-2018) [** ](https://www.pixalate.com/blog) Next Story [The most popular mobile app in every U.S. state: March 2018 →](https://www.pixalate.com/blog/march-2018-trending-mobile-apps-usa-state) ## You May Also Like These Stories on Research Reports [![](https://www.pixalate.com/hubfs/TOP%20100%20CONNECTED%20TV%20(CTV)%20BUNDLE%20IDs%20MAY%202026.jpg) ](https://www.pixalate.com/blog/top-100-connected-tv-ctv-bundle-ids-in-may-2026) [CTV](https://www.pixalate.com/blog/topic/ctv) ### [Pixalate Releases Top 100 Connected TV (CTV) Bundle ID Rankings For Global Ad Spend in May 2026; 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