A SPARKLE file is a project created by River SRL Sparkle, a macOS program used to visually build websites without any coding. It contains a website design, which may include text, images, video, audio, social media buttons, menus, radio buttons, checkboxes, and scroll locations.

SPARKLE file open in River SRL Sparkle 2.7 SPARKLE files are only supported by Sparkle. You can open a SPARKLE file by selecting File → Open.... You can create a SPARKLE file by selecting File → Save.... SPARKLE files not only contain design elements. The files also contain the website URL address, language, website ownership verification, search engine metadata, the website icon, and Google Analytics information. When you finish editing your website you can publish it directly from Sparkle by clicking the "Publish" button or selecting File → Publish website....