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Best custom image size plugins for WordPress

The most popular custom image size plugins for WordPress in November 2026, in WordPress.org’s own popular order, which follows active installs. Custom Thumbnail Generator leads with 20+ active installs. All 1 plugins tagged “Custom Image Size” are below, with figures from WordPress.org that update every day.

Installs aren’t everything: a recent release, a “Tested up to” that matches the current WordPress, and support threads that get resolved show a plugin is looked after. Open any plugin for its downloads, rank history and alternatives.

Research this niche or see all plugins.

Top 1 custom image size plugins

  1. 1.
    Custom Thumbnail Generator

    The most installed custom image size plugin, with 20+ active installs. Rated 5.0 from 7 reviews, updated 1 month ago.

All 1 plugins tagged “Custom Image Size”