Local WebP optimizer for WordPress. Free converts images to WebP; Pro adds AVIF and site-wide image tools.
Alternatives to GLS RSS Thumbnails
Plugins below are selected for functional relevance and current directory signals. Active-install counts do not affect this ranking.
Relevant replacements
WordPress plugins with similar use cases
Compatibility and update metadata provide context, not a quality guarantee. Review each plugin’s details for your site.
Feed Post Thumbnailv3.0.0
Adds MRSS namespace to the feed and uses post-thumbnail as media element in the feed. Settings available under Settings -> Reading.
This plugin automatically adds featured images of your posts into the RSS feed.
Add featured images to WordPress RSS feeds for Mailchimp newsletters and RSS readers. Includes image sizes and optional enclosure tags.
Adds the featured image attached to posts to the beginning of the post content and excerpt in RSS feeds.
Generate smart, contextual AI featured images for your WordPress posts automatically or on-demand using Pollinations.ai.
Automatically set missing featured images from the first image or a YouTube, Vimeo or Dailymotion video in your content.
Automatically creates a title-text thumbnail and sets it as the featured image for posts that don't have one — with a live preview.
Display a Masonry Thumbnail Grid of Featured Images, including captions and excerpts.
SNY Auto Featured Imagev2.1.1
SNY Auto Featured Image automatically sets featured images from content, external URLs, or defaults. Bulk preview & apply for existing posts.