How to download and install Lang Switcher in Chrome

From the “Download” button to the icon in the tray: what Chrome will show you, what Windows will ask, and what to click.

in developmentversion 0.103.0, October 19, 2026license MIT or Apache-2.0Tested in Chrome
  1. 1Download
  2. 2Chrome
  3. 4SmartScreen
  4. 5UAC: “Yes”
  5. 6Setup wizard
  6. 7Done

On the download page

  1. 1

    Click “Download”

    On the download page, in the “Download the installer” step, click “Download”. This downloads LangSwitcher-setup.exe from this site; “Download from GitHub” is a fallback that gets you the same file.

    1. Click “Download”

      2Download the installerDownloadDownload from GitHubVersionDateFileLangSwitcher-setup.exeSizeSHA-256Signed byPanda Koder
      2Download the installerDownloadDownload from GitHubVersionDateFileLangSwitcher-setup.exeSizeSHA-256Signed byPanda Koder

In Chrome

  1. 2

    Chrome blocks the file

    The “Recent download history” panel opens at the top right, and the file is marked “Suspicious download blocked”. That’s expected: a new release is still rarely downloaded. Click the file.

    1. Click the file

      Download Lang Switcherpanda-pishet-kod.dev/en/langswitcher/download/Download Lang Switcher2Download the installerRecent download historyLangSwitcher-setup.exeSuspicious download blockedFull download history
      panda-pishet-kod.devRecent download historyLangSwitcher-setup.exeSuspicious download blockedFull download history
  2. 3

    Download the file anyway

    Chrome warns you: “This file isn’t commonly downloaded and it may be dangerous.” Click “Download suspicious file” — the lighter button on the right.

    Once the file has downloaded, open it from Chrome’s downloads panel or from your “Downloads” folder.

    1. Click “Download suspicious file”

      Download Lang Switcherpanda-pishet-kod.dev/en/langswitcher/download/Download Lang Switcher2Download the installerLangSwitcher-setup.exeThis file isn’t commonly downloaded andit may be dangerous.Learn why Chrome blocks some downloadsDelete from historyDownload suspicious file
      panda-pishet-kod.devLangSwitcher-setup.exeThis file isn’t commonlydownloaded and it may bedangerous.Learn why Chrome blockssome downloadsDeletefrom historyDownloadsuspicious file

In Windows — this part is the same for every browser

  1. 4

    Get past “Windows protected your PC”

    Windows shows a blue “Windows protected your PC” window — that’s Microsoft Defender SmartScreen. Click “More info”, and you’ll see the file name, “Unknown publisher” and a “Run anyway” button. Click it.

    Windows won’t let the installer run, and there’s no “Run anyway” button? That means Smart App Control is turned on in Windows 11. It lets a program run if Microsoft considers it safe or if it’s signed with a certificate from a certification authority, and it doesn’t make exceptions for individual programs. Lang Switcher is signed with my own certificate, so with this protection on, Windows may not let it run. You can turn it off in the Windows Security app, under “App & browser control”. If you have the latest Windows 11 updates, you can turn it back on later; without them, only by resetting or reinstalling Windows.

    1. Click “More info”

      Windows protected your PCMicrosoft Defender SmartScreen prevented an unrecognized app fromstarting. Running this app might put your PC at risk.More infoDon’t run
      Windows protectedyour PCMicrosoft Defender SmartScreenprevented an unrecognized appfrom starting. Running this appmight put your PC at risk.More infoDon’t run
    2. Click “Run anyway”

      Windows protected your PCMicrosoft Defender SmartScreen prevented an unrecognized app fromstarting. Running this app might put your PC at risk.App:LangSwitcher-setup.exePublisher:Unknown publisherRun anywayDon’t run
      Windows protectedyour PCMicrosoft Defender SmartScreenprevented an unrecognized appfrom starting. Running this appmight put your PC at risk.App:LangSwitcher-setup.exePublisher:Unknown publisherRun anywayDon’t run
  2. 5

    Allow the installation

    A yellow prompt asks: “Do you want to allow this app from an unknown publisher to make changes to your device?” The publisher is unknown because the installer is signed with the author’s certificate, not one from a certification authority.

    “No” is selected by default, so pressing Enter cancels the installation. Click “Yes”.

    1. Click “Yes”; “No” is selected by default

      User Account ControlDo you want to allow this app from anunknown publisher to make changes toyour device?LangSwitcher-setup.exePublisher: UnknownFile origin: Hard drive on this computerShow more detailsYesNoClick “Yes”“No” is selected:Enter cancels the installation
      User Account ControlDo you want to allow thisapp from an unknownpublisher to make changesto your device?LangSwitcher-setup.exePublisher: UnknownFile origin: Hard drive onthis computerShow more detailsYesNoClick “Yes”“No” is selected: Entercancels the installation
  3. 6

    Go through the setup wizard

    The setup wizard opens in your Windows language. On the first page, “Ready to Install”, click “Install”. The box on that page says: “Setup will create a certificate on this computer and sign Lang Switcher with it, so that it can work in windows of programs run as administrator.”

    Then the wizard extracts the files — you don’t need to click anything. On the last page, leave “Launch Lang Switcher” checked and click “Finish”.

    1. Click “Install”

      Setup - Lang SwitcherReady to InstallSetup is now ready to begin installing Lang Switcher on your computer.Click Install to continue with the installation.Setup will create a certificate on this computer and signLang Switcher with it, so that it can work in windows ofprograms run as administrator.Panda Koder · programs made with heartpanda-pishet-kod.devCancelInstall
      Setup -Lang SwitcherReady to InstallSetup is now ready to begininstalling Lang Switcher onyour computer.Click Install to continue withthe installation.Setup will create acertificate on this computerand sign Lang Switcher withit, so that it can work inwindows of programs run asadministrator.CancelInstallPanda Koder · programsmade with heartpanda-pishet-kod.dev
    2. Wait — you don’t need to click anything

      Setup - Lang SwitcherInstallingPlease wait while Setup installs Lang Switcher on your computer.Extracting files...C:\Program Files\Lang_Switcher\LangSwitcher.exePanda Koder · programs made with heartpanda-pishet-kod.devCancel
      Setup -Lang SwitcherInstallingPlease wait while Setupinstalls Lang Switcher onyour computer.Extracting files...C:\Program Files\Lang_Switcher\LangSwitcher.exeCancelPanda Koder · programsmade with heartpanda-pishet-kod.dev
    3. Leave the box checked and click “Finish”

      Setup - Lang SwitcherCompleting the Lang SwitcherSetup WizardSetup has finished installing Lang Switcher on yourcomputer. The application may be launched byselecting the installed shortcuts.Launch Lang SwitcherClick Finish to exit Setup.1Panda Koder · programs made with heartpanda-pishet-kod.devFinish2
      Setup -Lang SwitcherCompleting theLang Switcher SetupWizardSetup has finished installingLang Switcher on yourcomputer. The applicationmay be launched by selectingthe installed shortcuts.Launch Lang Switcher1Click Finish to exit Setup.Finish2Panda Koder · programsmade with heartpanda-pishet-kod.dev
  4. 7

    Done: the tray icon and a welcome letter

    The Lang Switcher icon appears on the right of the taskbar, with the tooltip “Lang Switcher — active”. If you can’t see it, it may be hidden under the “^” arrow.

    When the program starts for the first time, it shows you a letter that begins with “Hello! My name is Panda.” It has an example: you type руддщ, press Pause/Break and get “hello”. Read it and click “Got it”. From then on, the program starts by itself when you sign in.

    What’s next? The first five minutes: the tray menu, the welcome letter and your first fix.

    1. The Lang Switcher icon in the tray

      12:00Lang Switcher — activeThe Lang Switcher icon is on the right of the taskbar.Can’t see it? Click the “^” arrow: the icon may be there.
      12:00Lang Switcher — activeThe Lang Switcher icon ison the right of the taskbar.Can’t see it? Click the“^” arrow: the icon maybe there.
    2. The welcome letter — click “Got it”

      A letter from the authorHello! My name is Panda.I made Lang Switcher and I am glad you installed it. The programdoes one thing: it fixes a word typed in the wrong layout. Here iswhat that looks like:руддщhelloThree things for the first dayOpen settingsGot it
      A letter from the authorHello! My nameis Panda.I made Lang Switcher and I amglad you installed it. Theprogram does one thing: itfixes a word typed in thewrong layout. Here is whatthat looks like:руддщhelloThree things for the first dayOpen settingsGot it

Other browsersEdge · Opera · Yandex Browser · Firefox · ← download page

Documentationhow to set it up and use it

Questions and problemson GitHub Issues ↗ or by email: send.me@panda-pishet-kod.dev