What's New

No changelog details available for this version.

• WindowSill now integrates with Directory Opus app!
• Improved user experience when installing extensions.

• New "File Helper" extension is available! Check the Manage Extensions page to install it.
• WindowSill now integrates with Files app!
• Fixed an issue where WindowSill would not detect selected files in File Explorer if file extensions are hidden.
• Fixed a bug where Analyze / Rewrite sill would be cut-off in Small size.

• Improved extensions loading performance.
• Fixed a bug where Analyze / Rewrite sill would be cut-off in Medium size.

• AI prompts now show a clearer message when a Microsoft Store account problem prevents WindowSill Plus from authenticating.
• Fixed a crash that could occur when the app tried to restart itself while a Windows update for WindowSill was in progress.
• Fixed an issue where some sills (such as Microsoft Teams) could be incorrectly replaced by an error report while the app was shutting down.
• Fixed a crash that could occur on startup when the app was restarting or shutting down at the same time.
• Fixed a crash that could occur on startup when the bar failed to display on a monitor.
• Fixed a crash that could happen while detecting which sills to activate for the focused app.

• The app starts up to 6 times faster in some cases, which highly depends on how many extensions are installed.
• Added a free trial for Microsoft Store users that doesn't require any credit card.

• Fixed a crash occurring when retrieving the icon of a packaged app.
• Fixed a crash occuring on start-up for unpackaged WindowSill after an update.

• AI prompts now keep the original formatting and images (lists, tables, screenshots) when replacing text. Ideal for Outlook or Word.
• AI prompt results now show a rich preview with images and tables, matching what will be pasted.
• Added a `{{keep_format}}` prompt field to preserve formatting and images; built-in rewrite, translate, tone, and spell-check prompts include it by default.
• Improved AI response reliability by treating the selected text strictly as content, reducing potential off-topic answers.
• AI responses that come back empty now show a clear message with a Retry button instead of an empty result.
• Improved Polish and Brazilian Portuguese translations.
• Brought back the Copy button in prompt results.
• Fixed a crash that could happen when plug-in a new monitor while WindowSill was open.

• Predefined, custom, and organization prompts are now merged into a single unified settings page.
• Added a search bar and source filter to quickly find specific prompts.
• You can now add multiple instances of a given AI provider, each with its own custom name and configuration.
• Running a prompt now automatically adds it to the AI Activity sill, where you can track its progress in real time.
• Completed prompt results are automatically dismissed from the AI Activity after a configurable delay.
• You can pin a prompt result to the AI Activity sill to prevent it from being automatically dismissed.
• The Replace and Append buttons in a prompt result now inject the text back into the app where the prompt was originally triggered.
• Added an option to run favorite prompts in the background by default; clicking the sill runs the prompt directly into the AI Activity without opening the popup.
• Various minor UX improvements to AI Providers settings, Prompts settings and Analyze / Rewrite sill.
• Fixed a crash that could happen when changing the focused app.
• Fixed a crash that could happen when the taskbar is relocated.
• Fixed a crash that could happen on startup.

• New "Date" extension is available! Check the Manage Extensions page to install it.
• New "Inline Terminal" extension is available! Check the Manage Extensions page to install it.
• New "Universal Commands" extension is available! Check the Manage Extensions page to install it.
• New "Text Finder" extension is available! Check the Manage Extensions page to install it.
• New "Video Helper" extension is available! Check the Manage Extensions page to install it.
• New "CharStats" extension is available! Check the Manage Extensions page to install it.
• Added the ability to set a custom color or image as the bar background in Personalization settings.
• Added the ability to customize Acrylic settings in Personalization settings.
• WindowSill Pro: administrators can now remote install public and private extensions for their users from the dashboard.
• Improved various translations.
• Fixed an issue where a sill's popup that is near a monitor edge may be cut off.
• Fixed an issue where a sill's popup that opens a modal dialog would result in closing the popup.
• Fixed an issue where sills that inject content in the foreground window may not activate the window properly.
• Fixed an issue where sills that get displayed on the same monitor than the focused window would not follow a window that gets dragged to another monitor.
• Fixed an issue where the app may fail at getting foreground app information.
• Fixed an issue where the Analyze / Rewrite sill may fail at rendering text in AI responses.
• Fixed a memory leak when closing the settings window.
• Fixed a crash that could occur when Windows shuts down.
• Fixed a crash occurring when clicking twice on the "..." sill and that answer time is slow.
• Fixed a crash that could occur when disconnecting a monitor.
• Fixed a crash that could occur when explorer.exe is not responding.
• Fixed a crash that could occur on startup when opening a sill bar.
• Fixed a crash that could occur when updating extensions on startup.
• Fixed a crash that could occur when changing app theme.

• Optimized ARM64 support, reducing battery consumption and improving performance on ARM devices.
• Added support for custom configuration for WindowSill Pro local models (Other AI, LM Studio, Ollama).
• Added the ability to select a specific AI model to use before running an AI prompt in AI Writing & Analysis.
• Added the ability to automatically select the best AI model to use for each prompt based on the prompt configuration and available providers and models.
• A default AI provider can now be set in AI Writing & Analysis settings.
• AI Writing & Analysis sills are now merged into a single `Analyze / Rewrite` sill.
• Tone, Length and Case prompts have been moved to `Rewrite` tab in the `Analyze / Rewrite` sill.
• Predefined, custom and organization AI prompts can now be searched in the text input allowing to type a prompt in `Analyze / Rewrite`.
• Organizations can now control which prompts are marked as favorites or hidden for their users in WindowSill Pro.
• Improved Anthropic, OpenAI, and xAI icons in dark theme.
• Improved animations when sills are shown or hidden. They are now less sluggish, especially on lower-end machines.
• Improved CPU usage when sills update their content.
• Improved translations.
• Fixed a memory leak related to keyboard shortcuts indicators.
• Fixed a crash occurring when Windows wakes up from sleep.
• Fixed a crash on launch.
• Fixed a crash occurring after taking a screenshot.
• Fixed an issue where Show Desktop (Win+D) would hide WindowSill.
• Fixed an issue where sill activation on text selection may not properly get cancelled.
• Fixed an issue where focus was not in the right place by default in `Analyze / Rewrite` popup.
• Fixed an issue where cancelling an AI prompt may not work properly.
• Fixed an issue where sills with context menu may close when other sills update their content.

• You can now add any OpenAI's compatible AI provider to AI Writing & Analysis.
• Improved search of AI models in settings.
• Variables in AI prompts can now be copied from the list of available variables.
• Infrastructure and SDK improvement in order to prepare for better ARM64 support.

• Added support for LM Studio.
• Added icons next to AI providers.
• Added an option to define the WindowSill bar size when the computer is in Tablet Mode in the Personalization settings page.
• Improved notification when the app is protected from screen recording.

• Added support for Mistral AI models in AI Writing & Analysis.
• Added Polish translation, and improved other translations.
• Improved performance and responsiveness of the WindowSill bar layout when many sills are displayed.
• Fixed an issue where the icons in buttons in Manage Extensions page were cut off.

• SDK: improved support of third-party control libraries in extensions.
• SDK: improved support of third-party native libraries in extensions.
• Improved resilience of connection with AI services.

• Added support for custom configuration for WindowSill Pro local models (Ollama).
• Added support for variables in AI prompts. You can now use a syntax like {{date_time}} in your prompts to inject the current date and time, and more.
• Fixed an issue where WindowSill may appear on top of full-screen applications such as PowerPoint in presentation mode or video games.
• Fixed an issue where WindowSill Pro may not work when Streaming AI responses is turned off in settings.
• Fixed an issue where clicking Copy in the result of an AI action would not delete the AI result from the WindowSill bar.
• Fixed an issue where AI providers list would be displayed in AI action when there's only one provider available.
• Fixed an issue where a failed AI action would not show the error message in the popup if the popup was dismissed and shown again.

• Ensure that AI Action result don't get deleted as soon as the popup is dismissed.
• Fixed an issue where it was impossible to switch to a different AI provider when Ollama or Foundry Local were temporarily unavailable.
• Fixed an issue where clicking the Update Now button would shut down WindowSill and the installer of the new version.
• Fixed an issue where WindowSill bar would hang when the Taskbar is set to only be displayed on primary monitor, that a secondary monitor is plugged in, and that the scale of the primary monitor is 100%.
• Reduced the amount of flickering of WindowSill bar when monitor(s) configuration changes.

• AI Rewrite & Improve actions can now work in background. Dismissing the popup while an AI action is in progress will no longer cancel it, and the AI result will be shown in the WindowSill bar when ready.
• You can now run multiple AI actions in a row without waiting for the previous one to finish.
• Fixed an issue where WindowSill bar was not visible on high DPI screens when the Taskbar is set to auto-hide and positioned on the bottom of the screen.
• Fixed an issue where WindowSill bar would overlap the Taskbar on a high DPI screen set as secondary monitor.
• Fixed an issue where firewall may block SSL connections to Ollama server.

• You can now hide any AI prompt that you don't use in the settings page.
• An extra line is now added before appending AI suggestions in AI Writing & Analysis for better readability.
• AI prompts are now ordered by name in the settings page.
• Favorite AI prompts can now be toggled from the settings page.
• Improved various translations.
• Improved reliability of assets loading.
• Fixed an issue where favorite AI prompts may appear twice in the WindowSill bar.
• Fixed an issue where toggling a favorite Organization prompt would not update the favorite indication.
• Fixed an issue where we could not scroll through tabs in AI Writing & Analysis.

• When selecting Images, PDF or DOCX files in File Explorer, WindowSill will now show tools that can be applied to them, such as AI Writing & Analysis or Image Helper!
• There's now a splash screen when starting WindowSill.
• Fixed an issue where a prompt with a defined model would not re-run using another model than the default one.
• Fixed an issue where re-running an AI prompt may not find a suitable model to use.

• The WindowSill bar can now be set to be transparent or translucent. Check the Personalization settings page to customize this feature!
• You can now reorder sills in the Personalization settings page by dragging and dropping them.
• AI Rewrite & Improve actions are now available even when text is not editable.
• Favorite prompts in AI Writing & Analysis are now displayed directly in the bar.
• WindowSill Pro: organization specific AI prompts are now displayed in settings.
• WindowSill Pro: a message is now displayed when account synchronization fails.
• WindowSill Pro: fixed an issue where changing AI Configuration Mode and models list in dashboard would not apply the changes immediately in the app after synchronizing settings.
• WindowSill Pro: administrators can now define centrally-managed Ollama server from a private network from the app.
• Improved translation in several languages.
• Fixed an issue where reasoning steps were not shown in AI Rewrite & Improve prompts.
• Fixed an aesthetic issue where the WindowSill bar would not show noise properly.
• Fixed another issue where WindowSill icon would appear in the taskbar after Explorer.exe restarts.

• You can now display WindowSill on multiple monitors at once! Check the Personalization settings page to customize this feature.
• Added an option to turn off streaming of AI answers for Ollama.
• AI Writing & Analysis now shows reasoning steps when using models that support it.
• Fixed an issue where Ollama answers were not properly streamed.
• Fixed an issue where AI Writing & Analysis would freeze while receiving an AI response.
• Fixed an issue where WindowSill icon would appear in the taskbar after Explorer.exe restarts.
• Fixed an issue where WindowSill Pro may fail to restart.
• Fixed an issue where WindowSill Pro users would be logged out after 24h.

• In AI Writing & Analysis, the Append button will now insert a new line before appending the result.
• In AI Writing & Analysis, AI responses that include headers or tables will now be properly formatted when inserted in applications that support rich text (like Microsoft Word or Outlook).
• Improved clarity when an extension can't be installed.
• Improved memorization of preferred display monitor on which WindowSill should be shown.
• Fixed an issue where WindowSill would stay on top of full-screen elements such as media players or video games.
• Fixed an issue where the "Rate the app" button stays after rating the app.
• Fixed an issue where WindowSill Pro users would be logged out when they have an unstable internet connection.
• Fixed a crash occurring when a tooltip is too tall for the screen.

• You can now use the Win+Ctrl shortcut to trigger an AI action even when the AI Writing & Analysis window is open, just like you already do when invoking a sill.
• Improved default focus behavior when opening a sill's popup.
• SDK: extensions can now include unmanaged DLLs.
• SDK: extensions can now include custom controls.
• Fixed an issue where sill's activators could fail to load.
• Fixed an issue when trying to load AI models with an invalid API key.
• Fixed a rare issue occurring with rapid successive Win+Ctrl keyboard shortcut.
• Fixed a crash occurring when a window gets the focus then quickly closed.
• Fixed a crash occurring when a UWP app gets the focus.
• Fixed a crash occurring when updating extensions.
• Fixed a crash occurring when using Web Browser extension while a web browser is not in foreground anymore.
• Fixed a crash occurring when changing the system theme while using WindowSill.

• Fixed a threading issue that had a side effect of slowing down typing responsiveness in some applications over time.

• The settings window will now always open on the same monitor as the WindowSill bar.
• Reduced latency when displaying responses from local AI models (Ollama and Foundry Local).

• Fixed a security issue when installing extensions.
• Extensions & AI can now be managed by administrator for all users on the machine using WindowSill Pro.
• Removed Preview badge

• Happy New Year! Wishing you a joyful and prosperous 2026!
• Improved Portuguese translation. Thanks @winchestercanal!

• New "Color Picker" extension is available! Check the Manage Extensions page to install it.
• Added translation in Portuguese. Thanks @winchestercanal!
• Fixed an issue where corrupted settings could crash the app.
• Fixed an issue where the WindowSill bar may overlap the Taskbar when it has a custom height.
• Fixed an issue where the WindowSill bar may not be properly aligned at the bottom of the screen when the Taskbar is moved to the left or right on Windows 11.

• New "Pomodoro Timer" extension is available! Check the Manage Extensions page to install it.
• In auto-hide mode, WindowSill now shows up when pressing Win+Ctrl.
• In auto-hide mode, WindowSill now hides itself properly after an action is performed and the resulting popup is closed.

• Fixed an issue that impacted typing responsiveness in web-based apps over time.
• Fixed a crash occurring when dragging and dropping files onto the WindowSill bar that from a remote file server.

• Google Gemini 3 Pro and OpenAI GPT 5.1 models are now available in AI Writing & Analysis.
• API keys in AI Writing & Analysis settings are now hidden.
• Added an option to enable or disable telemetry.
• Increased extension loading buffer.
• Fixed an issue where non-existing files in clipboard could cause internal errors.
• Fixed an internal error happening when testing activators.

• Added support for Foundry Local models to AI Writing & Analysis.
• Added a prompt generator to AI Writing & Analysis to help you create custom prompts more easily.
• You can now assign each prompt to a specific AI model, giving you better control over how each one behaves.
• You can now replace or add to your selected text with AI results from Analyze & Understand actions, just like you could already do with Rewrite & Improve (works when text isn't locked for editing).
• AI suggestions can now be added after your selected text instead of replacing it entirely.
• AI Writing & Analysis now notify when no text is selected.
• AI Writing & Analysis shows more details when the prompt is in progress.
• Fixed a rare issue where the mouse cursor would momentarily freeze while WindowSill is running.
• Fixed residual files left by uninstalled extensions that blocked reinstallation.
• Fixed a bug allowing sills to remain accessible via keyboard shortcuts after the WindowSill bar was emptied.
• Fixed an issue where retrying an AI answer didn't cancel the previous request properly.

• Fixed an issue where URLs would not be detected in Brave web browser.
• Fixed a title in French translation.

• NEW: You can now drag and drop any plain text file, PDF or Docx onto WindowSill bar to open it in AI Writing & Analysis for summarization, rewriting, or other actions.
• Added a button in Settings to check for extension updates manually.
• In future extension update, some extensions will be able to hide their icon in the WindowSill bar to optimize space.
• Fixed a memory leak that had a side effect of slowing down typing responsiveness in some applications over time.

• The last separator in the WindowSill bar is now next to the "..." menu button or hidden for better appearance.
• Fixed an issue where full-screen windows could cover WindowSill when it's set to Small on high-resolution screens.
• Fixed an issue where WindowSill didn't appear in the right spot when auto-hide was turned on for high-resolution screens.
• Fixed an issue where WindowSill would not correctly detect selected text in apps that support multiple selections at once.

• Fixed a bug that made the mouse pointer pause for a moment every second on some machines.

• New "NetStats" extension is available! Check the Manage Extensions page to install it.
• Default prompts in AI Writing & Analysis can now be customized in the Settings page.
• Default prompts in AI Writing & Analysis are now translated in all supported languages.
• AI Writing & Analysis actions can now be marked as favorites for quicker access.
• Moved Sills management to Personalization settings page.
• Uninstalling an extension will now clearly indicate which sills will be removed.
• Fixed a crash that could occur when quickly switching between windows and selecting text.

• Added a helpful description to the Auto Hide setting.
• Fixed a crash that could happen when retrieving contextual information on the foreground window.
• Fixed a memory leak that could happen when failing at retrieving selected text from any app.

• Fixed an issue where the app's version number was wrongly displayed in the About page.
• Fixed a crash that could occur when disconnecting a monitor.
• Fixed a crash that could happen some time after selecting text in a web browser or web-based app.
• Fixed a memory leak that could happen over time when spending a lot of time in a web browser or web-based app.

• New "Currency & Unit Converter" extension is available! Check the Manage Extensions page to install it.
• Added an option to hide the "..." menu button in the WindowSill bar.
• Improved reliability in detection of selected text in any app.
• Fixed an issue where non-selected text was triggering AI Writing & Analysis to appear.
• Fixed an issue where the app couldn't retrieve the latest AI models from online services.
• Fixed an issue causing other application's typing responsiveness to become slower over time while WindowSill is running.
• Fixed a crash that can happen when the content of the WindowSill bar changes.

• Right-clicking on an empty area now opens the "..." menu.
• Smoother animations when showing WindowSill from auto-hide.
• Added an option to add a delay before showing the WindowSill bar when auto-hidden.
• Improved the user experience when Windows 11 is in Tablet Mode.
• Improved report of errors when loading extensions.
• Improved Chinese and Vietnamese translations.
• Fixed the navigation selection not updating when using the back button in Settings.
• Fixed maximized windows overlapping with WindowSill after Windows Explorer restarts.
• Fixed the app failing at initializing every sills when debugging a new extension.
• Fixed an issue where newly installed extensions would not show their first-time tutorial.
• Fixed a crash that occurred when pressing multiple number keys at once in keyboard shortcuts.

• Added translations for Chinese (Simplified & Traditional), German, Hindi, Japanese, Spanish, Ukrainian, and Vietnamese.
• Added a link in the About page to help translate the app.
• Extensions now display their changelog after updating and are accessible from the Extensions page.
• Performance and reliability improvements.
• Fixed a crash when reordering clipboard history items.

• Improved AI Writing & Analysis and URL Helper compatibility with Notepad++, Code::Blocks, and other Scintilla-based applications.
• Fixed a crash when reordering clipboard history items.

• Added French translation.
• Fixed an occasional crash when the bar reaches capacity.
• Fixed an occasional crash when switching between windows.
• Fixed the Delete button not working properly in AI Custom Actions.
• Fixed initial setup failing to complete on some devices.
• Fixed a crash loop issue that could occur during startup.
• Fixed the app becoming unresponsive when installing new extensions.

• Added settings to customize the order of sills.
• Added an option to center sills.
• Added an option to auto-hide WindowSill.
• Fixed missing icons on Windows 10.
• Fixed sills not loading properly.
• Fixed a crash when translating text to Croatian using AI.

• Added an option to hide the Win+Ctrl indicator.
• Fixed a startup crash on ARM64 devices.
• Fixed an issue with focus not initializing properly in Short-Term Reminders.

• Fixed a memory leak.
• Fixed the app becoming unresponsive during startup.
• Improved visual indicators for active lifetime licenses and subscriptions.
• Added XAML support for extensions.

• Faster loading of AI models in the AI Writing & Analysis popup.
• Fixed the Windows taskbar not appearing when set to auto-hide and WindowSill is at the bottom of the screen.

• Added 27 additional OpenAI models to AI Writing & Analysis.
• Added Google Gemini models to AI Writing & Analysis.
• Added xAI Grok models to AI Writing & Analysis.
• Added OpenRouter models to AI Writing & Analysis, including Mistral AI, Meta Llama, and DeepSeek.
• Added a notification when screen recording protection hides the app for the first time.
• Added third-party open source notices.
• The Preview badge can now be hidden in settings.
• Fixed a crash related to text selection tracking.
• Fixed popup alignment issues on screens with different DPI settings.
• Fixed incorrect app bar positioning on secondary monitors with different DPI and scale settings.

• Added What's New section.
• Extensions now update automatically.
• Fixed a performance issue that caused the system to slow down over time.

• Fixed the app appearing blank on systems not using en-US locale.