# SumatraPDF changelog

> A small, fast PDF, ePub, MOBI and comic reader.

- Vendor: Krzysztof Kowalczyk
- Category: Productivity
- Platforms: Windows
- Official site: https://www.sumatrapdfreader.org
- Tracked by: What's New (https://whatsnew.fyi/product/sumatrapdf)
- Harvested from: GitHub (sumatrapdfreader/sumatrapdf)
- Entries below: 10 (newest first)

What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog.

## Releases

### 3.6.1rel — 3.6.1 release

- Date: 2026-04-06
- Version: 3.6.1rel
- Original notes: https://github.com/sumatrapdfreader/sumatrapdf/releases/tag/3.6.1rel
- Permalink: https://whatsnew.fyi/product/sumatrapdf/releases/3.6.1rel
- Labels: Platforms: Windows

Bugfixes.

### 3.6rel — 3.6 release

- Date: 2026-03-17
- Version: 3.6rel
- Original notes: https://github.com/sumatrapdfreader/sumatrapdf/releases/tag/3.6rel
- Permalink: https://whatsnew.fyi/product/sumatrapdf/releases/3.6rel
- Labels: Platforms: Windows

- **changed** — Improved Command Palette (Ctrl + K)
- **changed** — Improved editing of annotations
- **changed** — Improved scrolling with mouse wheel and touch gestures
- **added** — New commands
- **changed** — Some commands can now take arguments
- **changed** — Improved theming
- **fixed** — Many bug fixes

Full version history: https://www.sumatrapdfreader.org/docs/Version-history#3.6

Notable highlights:
* improved Command Palette (`Ctrl + K`)
* improved editing of annotations
* improved scrolling with mouse wheel and touch gestures
* more customizability:
  * new commands
  * some commands can now take arguments
* improved theming
* many bug fixes

You can download latest version from https://www.sumatrapdfreader.org/download-free-pdf-viewer or `Ctrl + K`, `Check For Updates` using command palette.

### 3.5.2rel — 3.5.2 release

- Date: 2023-10-25
- Version: 3.5.2rel
- Original notes: https://github.com/sumatrapdfreader/sumatrapdf/releases/tag/3.5.2rel
- Permalink: https://whatsnew.fyi/product/sumatrapdf/releases/3.5.2rel
- Labels: Platforms: Windows

- fix not showing tab text
- fix Bookmarks for folder showing bad file names
- make menus in dark themes look more like standard menus (bigger padding)
- update translations

Full release notes: [www.sumatrapdfreader.org/docs/Version-history](https://www.sumatrapdfreader.org/docs/Version-history)
To download: [www.sumatrapdfreader.org/download-free-pdf-viewer](https://www.sumatrapdfreader.org/download-free-pdf-viewer)

### 3.5.1rel — 3.5.1 release

- Date: 2023-10-24
- Version: 3.5.1rel
- Original notes: https://github.com/sumatrapdfreader/sumatrapdf/releases/tag/3.5.1rel
- Permalink: https://whatsnew.fyi/product/sumatrapdf/releases/3.5.1rel
- Labels: Platforms: Windows

- fixed a crash in uninstaller
- disable lazy loading on session restore

Full release notes: [www.sumatrapdfreader.org/docs/Version-history](https://www.sumatrapdfreader.org/docs/Version-history)
To download: [www.sumatrapdfreader.org/download-free-pdf-viewer](https://www.sumatrapdfreader.org/download-free-pdf-viewer)

### 3.5rel — 3.5 release

- Date: 2023-10-23
- Version: 3.5rel
- Original notes: https://github.com/sumatrapdfreader/sumatrapdf/releases/tag/3.5rel
- Permalink: https://whatsnew.fyi/product/sumatrapdf/releases/3.5rel
- Labels: Platforms: Windows

Full release notes: [www.sumatrapdfreader.org/docs/Version-history](https://www.sumatrapdfreader.org/docs/Version-history)
To download: [www.sumatrapdfreader.org/download-free-pdf-viewer](https://www.sumatrapdfreader.org/download-free-pdf-viewer)

- Arm 64-bit builds
- dark mode (menu `Settings / Theme` or `Ctrl + K` command `Select next theme`)
  you can use `i` (invert colors) to match the background / text color of rendered
  PDF document. Due to technical limitations, it doesn't work well with images
- `i` (invert colors) is remembered in settings
- `CmdEditAnnotation` select annotation under cursor and open annotation edit window
- rename `CmdShowCursorPosition` => `CmdToggleCursorPosition`
- add `Annotations [ FreeTextColor, FreeTextSize, FreeTextBorderWidth ]` settings
- ability to move annotations. `Ctrl + click` to select annotation and them move via drag & drop
- add `CmdCommandPaletteOnlyTabs` command with `Alt + K` shortcut
- exit full screen / presentation modes via double click with left mouse button
- ability to drag out a tab to open it in new window
- support opening `.avif` images (including inside .cbz/,cbr files)
- respect image orientation `exif` metadata in .jpeg and .png images
- support Adobe Reader syntax for opening files `/A "page=<pageno>#nameddest=<dest>search=<string>`
- add `Next Tab` / `Prev Tab` commands with `Ctrl + PageUp` / `Ctrl + PageDown` shortcuts
- keep Home tab open; add `NoHomeTab` advanced option to d`isable that
- add context menu to tabs
- bugfix: handle files we can't open in `next file in folder` / `prev file in folder` commands
- command palette: when search starts with `>`, only show commands, not files (like in Visual Studio Code)
- add `reopen last closed` command (`Ctrl + Shift + T`, like in web browsers)
- add `clear history` command
- can send commands via [DDE](https://www.sumatrapdfreader.org/docs/DDE-Commands)
- added `CmdOpenWithExplorer`, `CmdOpenWithDirectoryOpus`, `CmdOpenWithTotalCommander`, `CmdOpenWithDoubleCommander` commands
- enable `CmdCloseOtherTabs`, `CmdCloseTabsToTheRight` commands from command palette
- recognize `PgUp` / `PgDown` and a few more in keyboard shortcuts
- add `-disable-auto-rotation` cmd-line print option

### 3.4.6rel — 3.4.6 release

- Date: 2022-06-08
- Version: 3.4.6rel
- Original notes: https://github.com/sumatrapdfreader/sumatrapdf/releases/tag/3.4.6rel
- Permalink: https://whatsnew.fyi/product/sumatrapdf/releases/3.4.6rel
- Labels: Platforms: Windows

Minor release:
* fix crashes
* fix hang in Fit Content mode and Bookmark links

### 3.4.5rel — 3.4.5 release

- Date: 2022-06-06
- Version: 3.4.5rel
- Original notes: https://github.com/sumatrapdfreader/sumatrapdf/releases/tag/3.4.5rel
- Permalink: https://whatsnew.fyi/product/sumatrapdf/releases/3.4.5rel
- Labels: Platforms: Windows

A minor release:

* fixes crashes

### 3.4.4rel — 3.4.4 release

- Date: 2022-06-02
- Version: 3.4.4rel
- Original notes: https://github.com/sumatrapdfreader/sumatrapdf/releases/tag/3.4.4rel
- Permalink: https://whatsnew.fyi/product/sumatrapdf/releases/3.4.4rel
- Labels: Platforms: Windows

Minor release:

* restore `HOME` and `END` in find edit field
* fix crashes

### 3.4.3 — 3.4 release

- Date: 2022-05-30
- Version: 3.4.3
- Original notes: https://github.com/sumatrapdfreader/sumatrapdf/releases/tag/3.4.3
- Permalink: https://whatsnew.fyi/product/sumatrapdf/releases/3.4.3
- Labels: Platforms: Windows

##### 3.4

- [Command Palette](https://www.sumatrapdfreader.org/docs/Command-Palette)
- [customizable keyboard shortcuts](https://www.sumatrapdfreader.org/docs/Customizing-keyboard-shortcuts)
- better support for epub files using mupdf's epub engine. Adds text selection and search in ebook files. Better rendering fidelity. On the downside, might be slower.
- [search / translate selected text](https://www.sumatrapdfreader.org/docs/Customize-search-translation-services)
    - we have few built-in and you can [add your own](https://www.sumatrapdfreader.org/settings/settings3-4#SelectionHandlers)
- installer: `-all-users` cmd-line arg for system-wide install
- added `Annotations.TextIconColor` and `TextIconType` advanced settings
- added `Annotations.UnderlineColor` advanced setting
- added `Annotations.DefaultAuthor` advanced setting
- `i` keyboard shortcuts inverts document colors `Shift + i` does what `i` used to do i.e. show page number
- `u` and `Shift + u` keyboard shortcuts adds underline annotation for currently selected text
- `Delete` / `Backspace` keyboard shortcuts delete an annotation under mouse cursor
- support .svg files
- faster scrolling with mouse wheel when cursor over scrollbar
- add `-search` cmd-line option and `[Search("<file>", "<search-term>")]` DDE command
- a way to get list of used fonts in properties window
- support opening `.heic` image files (if Windows heic codec is installed)
- add experimental smooth scrolling (enabled with `SmoothScroll` advanced setting)

##### 3.4.1

- fix downloading of symbols for better crash reports

##### 3.4.2

- make keyboard accelerators work when tree view has focus
- fix `-set-color-range` and  `-bg-color` replacing `MainWindowBackground`
- fix crash with incorrectly defined selection handlers

##### 3.4.3

- re-enable backspace in edit field
- fix installation for all users when using custom installation directory
- re-enable `Copy Image` context menu for comic book files
- fix display of some PDF images
- fix slow loading of some ePub files

### 3.3.3rel — 3.3.3 release

- Date: 2021-07-21
- Version: 3.3.3rel
- Original notes: https://github.com/sumatrapdfreader/sumatrapdf/releases/tag/3.3.3rel
- Permalink: https://whatsnew.fyi/product/sumatrapdf/releases/3.3.3rel
- Labels: Platforms: Windows

Changes in this release:
* fix a crash in PdfFilter.dll (Desktop Search integration)

Full release notes: https://www.sumatrapdfreader.org/docs/Version-history
To download: https://www.sumatrapdfreader.org/download-free-pdf-viewer