Scroll Anchor for Gravity Forms gives you control over the gform_confirmation_anchor filter without touching a single line of code.

By default, Gravity Forms scrolls the page back to the top of the form after a submission. This plugin lets you turn that anchor behavior on in one of two ways:

Sitewide, so every form on the site uses the anchor.
Per form, so only the forms you choose use the anchor while every other form keeps default behavior.

A simple settings screen under Settings > GF Confirmation Anchor lists every Gravity Forms form on your site with a checkbox next to it, along with a single toggle to enable the anchor everywhere at once.

This plugin is not affiliated with or endorsed by Gravity Forms.

Features

Lightweight, single purpose settings page.
Sitewide toggle for enabling the anchor on all forms.
Per form checkboxes for granular control.
Settings are sanitized and stored using the WordPress Settings API.
No database tables, no external requests, no bloat.