Ads.txt adoption reaches new highs to end Q1 2018

This blog series provides a weekly summary highlighting some of the key takeaways as the programmatic industry adopts ads.txt, the IAB-led anti-ad fraud initiative.

Pixalate has also made available for download the full list of publishers with ads.txt implemented, which also gets updated weekly. 

Ads.txt adoption at a glance: Initiative nears 70% adoption among top 5,000 programmatic publishers

Ads.txt adoption reached some new highs this week:

• Ads.txt adoption reached the 72.5% mark among the top 1,000 programmatic publishers
• Among the top 5,000 programmatic publishers, 69.34% now have ads.txt — a record high
• Over 43,000 new publishers implemented ads.txt over the final week of March

Here are the latest ads.txt adoption figures, as of March 26, 2018.

Nearly 350,000 publishers now have ads.txt

As of April 2, 2018, 342,305 publishers have implemented ads.txt.

This represents an increase of 43,312 compared to last week.

Ads.txt adoption has increased 282% so far in 2018

According to Pixalate’s research, the total number of publishers with ads.txt was 89,638 as of January 1, 2018.

Over 250,000 new publishers have implemented ads.txt since then — representing a rise of about 282% during Q1.

Pixalate Top 1,000: 72.5% of the top 1,000 programmatic publishers have ads.txt

Of the top 1,000 sites based on programmatic advertising volume (the “Pixalate Top 1,000”), 725 sites have implemented ads.txt — or 72.50%.

This represents an increase of 23 new publishers since last week.

This number is up from 571 on January 1, representing a year-to-date rise of 26.97%.

Pixalate Top 5,000: 69.34% of the top 5,000 programmatic publishers have ads.txt

Of the top 5,000 sites based on programmatic advertising volume (the “Pixalate Top 5,000”), 3,467 sites have implemented ads.txt — or 69.34%.

This indicates that an additional 119 sites within the Pixalate Top 5,000 implemented ads.txt in the past week.

This number is up from 2,355 on January 1, representing a year-to-date rise of 47.22%.

35% of Alexa Top 1,000 sites have ads.txt

As of this writing, 350 Alexa Top 1,000 publishers have implemented ads.txt — or 35%.

This number is up from 220 on January 1, representing a year-to-date rise of 59.09%

Last week, Pixalate measured 344 Alexa Top 1,000 publishers as having implemented ads.txt. Publishers can move in and out of these top rankings. 

31.34% of Alexa Top 5,000 sites have ads.txt

As of this writing, 1,567 Alexa Top 5,000 publishers have implemented ads.txt — or 31.34%. 

This number is up from 1,013 on January 1, representing a year-to-date rise of 54.69%.

Last week, Pixalate measured 1,527 Alexa Top 5,000 publishers as having implemented ads.txt. Publishers can move in and out of these top rankings. 

Download the full list of publishers with ads.txt

You can download the full list of publishers with ads.txt here:

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