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

## Crop and resize images

When you view an image file, `Crop Image` (`CmdCropImage`) and `Resize Image` (`CmdResizeImage`) open an editing window. Drag to crop (arrow keys move an edge by 1 pixel) or resize, then save to a new file. The right-click menu has an `Image` submenu (Copy To Clipboard, Save, Crop, Resize), which also works for images inside PDFs and other documents.

![A Mandelbrot PNG is open; right-click > Selected Image > Crop opens the Crop Image window, a drag draws a crop area around the fractal and Apply Crop crops it; Resize and dragging a corner handle shrink it to about half, and Save writes Mandelbrot.1.png and opens it in a new tab](https://youtu.be/VwfSKo5VPhg)

## Save images as PNG, JPEG, BMP, GIF, TIFF or WebP

The image save window has a format drop-down: PNG, JPEG, BMP, GIF, TIFF, and WebP when Windows has a WebP encoder installed (it's only offered if the encoder is found).

![The Save Image window with the image format drop-down open](https://files.sumatrapdfreader.org/assets/sumatrapdf/changelog/img/save-image-formats-5e54.png)

## Paste image from clipboard

`Ctrl + V` pastes an image from the clipboard: it's saved as a PNG in the Downloads folder and opened.

## Drag & drop images from a browser

Drag an image from a web browser onto the SumatraPDF window. It's downloaded to the Downloads folder and opened.

## Show Errors for problematic PDFs

If MuPDF reported warnings or errors while loading a PDF, the right-click menu has `Show Errors` to see them.

![Show Errors in the right-click menu of a damaged PDF, and the Errors window listing what MuPDF reported](https://files.sumatrapdfreader.org/assets/sumatrapdf/changelog/img/show-errors-ded9.png)

## Deleting a file cleans up history

`CmdDeleteFile` also removes the file from history and deletes its home page thumbnail.

## Tab and annotation visual tweaks

The tab close button has a round hover background. The selected annotation is marked in blue instead of gray, so it's easier to see.

![The tab close button with its round hover background, and a selected annotation marked in blue](https://files.sumatrapdfreader.org/assets/sumatrapdf/changelog/img/tab-close-hover-annotation-selected-741a.png)

More: [changes from March 29, 2026](https://www.sumatrapdfreader.org/docs/Changelog-2026-03-29) and the [full changelog](https://www.sumatrapdfreader.org/docs/Changelog).