Plugin that allows you to insert a table of contents into your posts.
https://wordpress.org/plugins/easy-table-of-contents/
Widgets · WordPress Plugins
Get access to data on 389,611 websites that are Easy Table of Contents Customers. We know of 90,730 live websites using Easy Table of Contents and an additional 298,881 sites that used Easy Table of Contents historically and 45,435 websites in the United States.
Get a list of 389,611 websites using Easy Table of Contents which includes location information, hosting data, contact details, 90,730 currently live websites and an additional 59,311 domains that redirect to sites in this list. 298,881 sites that used this technology previously and 45,435 websites in the United States currently using Easy Table of Contents.
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