Opening and moving between works is faster. Ugoira starts playing before it finishes downloading, and the original-size view shows the already-loaded standard image first. Added the option "Also preload the adjacent work" (off by default).

You can now click near the edges of the viewer to turn pages or switch works (setting "Click the edges to navigate", off by default). When the sidebar is hidden, a "Artwork page" link appears next to the close button, and on narrow windows the sidebar can be opened with the button at the top right. Fixed the viewer sometimes closing when you click the ugoira play button, and clicking below a commenter's icon opening their page.

Added Korean, Simplified Chinese and Traditional Chinese. When pixiv is displayed in one of these languages, the viewer and the settings screen follow it.