Curtail vs Optimole

Curtail is a free Linux application for compressing PNG, JPEG, WebP, and SVG images. It offers both compression modes and lets users decide whether image metadata is retained. Recursive directory compression supports batch processing across folder contents. When compression would produce a larger file, Curtail restores the original. Actions are provided to open a compressed image and reveal it in its folder. The project is released under the GNU General Public License version 3 or later and uses open-source components including Oxipng, pngquant, Jpegoptim, libwebp, and Scour. The project recommends installing its Flatpak package from Flathub; unofficial Snap, Ubuntu PPA, and Fedora COPR packages are also listed. Flathub marks the app as potentially unsafe and lists read/write access to the home folder. The GNOME page lists version 1.17.0, released on 2026-10-05, and links to an issue tracker. Curtail is available at no cost, with no trial required.

Optimole is a web service for optimizing and delivering images across WordPress sites and other integrations. It resizes images for a visitor’s device and screen, adjusts quality based on device and connection, and supports conversion or delivery in WebP and AVIF. Its WordPress plugin optimizes uploaded images in real time, while sites beyond WordPress can connect through custom integration. The Media API provides more than 50 URL-based image transformations, and API access is available. Digital Asset Management includes a central media library, folders, tagging, and filtering; teams can use access controls and share assets with external stakeholders. Optimole uses Amazon CloudFront, which it says has more than 450 locations worldwide. Its Free plan costs nothing and allows 2,000 monthly visits, unlimited images, and unlimited sites. A free trial is promoted without a credit card requirement, and purchases have a 7-day no-questions-asked money-back guarantee. Monthly and yearly billing are offered, with yearly billing marked to save 20%.