For Markdown documents in the browser (WebView2) view and for CHM documents, Ctrl + F now opens SumatraPDF’s own find bar instead of the browser’s find dialog. It searches every page, highlights matches on the page, fills the find results list (click a result to jump there) and shows the “n / m” count. F3 / Shift + F3 move between matches across pages.

PNG files that SumatraPDF saves, such as screenshots, cropped or resized images and images pasted from the clipboard, are now recompressed in the background without losing quality (zopflipng). This typically makes them 10-40% smaller.