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

## Read Aloud in main menu, continuous reading and word highlight

The main menu bar has a **Read Aloud** menu. **Start Reading From Top** reads from the visible page through to the end of the document instead of stopping after one page. **Start Reading Selection** reads only the selected text. The word being spoken is highlighted on the page. The toolbar Read Aloud button's drop-down has Pause and other playback controls.

![The main menu button opens the menu; Read Aloud > Start Reading From Top reads the three short pages one after another without stopping, the view scrolls down to follow and the spoken word is highlighted](https://youtu.be/Ixx6raq-I9Y)

## Translate selected text with AI tools

If Grok Build, Claude Code or OpenAI Codex is installed, the selection's right-click menu can translate the selected text (`CmdTranslateSelectionWithClaudeCode`, `CmdTranslateSelectionWithGrokBuild`, `CmdTranslateSelectionWithOpenAICodex`). A dialog lets you edit the text and pick the source language (**Auto** detects it) and the target language, and shows the translation there. The target language is remembered (`TranslateToLang`).

![Translate dialog with the selected text, Claude Code as the translator, and source and target language drop-downs](https://files.sumatrapdfreader.org/assets/sumatrapdf/changelog/img/translate-dialog-ai-350b.png)

## SVG icons for custom toolbar buttons

Custom toolbar buttons defined in `Shortcuts` can use `ToolbarSvgIcon` to show an SVG icon that looks like the built-in icons, instead of a text label. If both `ToolbarSvgIcon` and `ToolbarText` are set, the icon is used ([#5711](https://github.com/sumatrapdfreader/sumatrapdf/issues/5711)).

![Toolbar with three custom buttons with SVG icons at the end: Back, Forward and Favorites](https://files.sumatrapdfreader.org/assets/sumatrapdf/changelog/img/toolbar-svg-icons-13fd.png)

## Search and navigation in the built-in manual

The built-in manual has full-text search (`Ctrl + K`), and its window has Back / Forward buttons and shows the current address. Pages are rendered from the Markdown source on demand.

![Built-in manual window with Back / Forward buttons and the current address, after following a link](https://files.sumatrapdfreader.org/assets/sumatrapdf/changelog/img/manual-navigation-1b57.png)

More: [changes from June 20, 2026](https://www.sumatrapdfreader.org/docs/Changelog-2026-06-20) and the [full changelog](https://www.sumatrapdfreader.org/docs/Changelog).