New app. PixStrip - batch image processor for Linux. Resize, convert, compress, strip metadata, watermark, and rename. A step-by-step wizard walks you through everything so you don't need to know what you're doing to get good results.
Full CLI for scripting. Fediverse resize presets for Mastodon, Pixelfed, and Lemmy built in.
Rust + GTK 4, native on GNOME. WCAG 2.2 AAA accessible. Free, CC0 public domain. Runs locally.