New in the SumatraPDF [pre-release builds](https://www.sumatrapdfreader.org/prerelease):

## Tab switching in most-recently-used order

The new `TabsMru` advanced setting makes `Ctrl + Tab` go through tabs in most-recently-used order.

![With TabsMru = true, Alt + 4 and Alt + 2 visit Dunes and Bees; Ctrl + Tab shows the tab list in most-recently-used order (Bees, Dunes, Apples, ...) and goes back to Dunes, Ctrl + Tab again back to Bees, and Ctrl + Tab + Tab further back to Apples](https://youtu.be/C5nFBrqxAkI)

## More details in image and comic book properties

Document Properties (`Ctrl + D`) for image files now shows size, dimensions, DPI and EXIF metadata ([#4265](https://github.com/sumatrapdfreader/sumatrapdf/issues/4265)). For comic book files (CBZ, CBR, CB7, CBT) it lists the image files in the archive.

![Document Properties for a JPEG image with dimensions, DPI and EXIF data, and for a comic book with the list of image files](https://files.sumatrapdfreader.org/assets/sumatrapdf/changelog/img/image-and-comic-properties-5639.png)

## Image editor keyboard shortcuts

In the image crop/resize window, `Esc` switches back to save mode and `Ctrl + C` copies the image to the clipboard.

## No border around the sidebar trees

The border around the Table of Contents and bookmarks trees is gone.

## Menu bar respects UIFontSize

The menu bar uses the font size from the `UIFontSize` setting.

More: [changes from April 1, 2026](https://www.sumatrapdfreader.org/docs/Changelog-2026-04-01) and the [full changelog](https://www.sumatrapdfreader.org/docs/Changelog).