The Theme Design Utilities plugin offers a range of helpful tools for Obsidian theme designers. It includes features like mobile emulation for previewing themes on mobile devices and the ability to cycle through installed themes or toggle between light and dark modes. The plugin also provides commands for debugging, such as adding red outlines to elements or freezing Obsidian for creating test elements. Additionally, it offers helpful resources like cheatsheets and markdown notes for testing theme colors and CSS adjustments. These utilities streamline the theme design process and improve efficiency within the Obsidian environment.

The Extended File Support plugin enhances Obsidian by enabling users to view and embed various file formats that are not natively supported. It provides read-only compatibility for image, design, and 3D model files, including Krita (`.kra`), Photoshop (`.psd`), Adobe Illustrator (`.ai`), and multiple 3D formats (`.gltf`, `.glb`, `.obj`, `.stl`). Users can configure file display settings, such as scaling, embedding dimensions, and camera positioning for 3D models. The plugin also integrates with Obsidian Canvas, ensuring smooth visualization across different workspaces.

The Easy Fonts plugin allows users to easily load custom fonts in Obsidian, including on mobile devices where installing system fonts can be challenging. Users can add fonts directly to their vault, specify file paths in the plugin settings, and reload fonts instantly. It supports common web font formats such as TTF, OTF, WOFF, and WOFF2. The plugin ensures efficient font loading and caching to minimize startup time while maintaining performance.