In April 2026, the addition of 521,179 new ads.txt lines and the removal of 419,047 existing lines resulted in a net increase of around 102k+ lines, indicating a strong rise in activity this month. Both direct and reseller entries saw significant growth, reflecting increased publisher updates and continued expansion of ads.txt lines across publisher inventories.
The changes in the ads.txt lines show notable improvements compared to previous months. Here are some top SSPs that have gained a good number of new lines.
- Smaato emerged as the strongest contributor this month, likely driven by its mobile-focused monetization and in-app demand integrations. Minute Media followed with notable gains, supported by expansion across its publisher network. PubMatic also recorded solid growth, reflecting continued adoption and strong demand connectivity.
- AppNexus and Sharethrough also posted steady increases, indicating ongoing expansion through established demand partnerships and native strengths. Overall, this month’s rankings reflect continued momentum from SSPs strengthening their presence across publisher segments.
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