texlab/docs/previewing.md

Previewing

texlab supports compiling LaTeX using a custom request (textDocument/build) and by building a document after saving if configured to do so. To enable building on save, simply set texlab.build.onSave to true. Previewing can be configured in a variety of ways:

1. If you are using latexmk, you can create a .latexmkrc file and call your viewer accordingly. Afterwards, you can add the -pv flag to your texlab.build.args.

2. If you want the PDF viewer to stay synchronized with the cursor position in your editor, you can instruct texlab to execute a forward search after every build (texlab.build.forwardSearchAfter). To do so, you need to enable SyncTeX and update the texlab.forwardSearch configuration. If you want to use this feature, we do not recommend the -pvc flag because texlab does not get notified by latexmk when a document gets built. Instead, you can use texlab.build.onSave.

In the following sections, we will give forward search configurations for several popular viewers and Visual Studio Code. However, these settings can easily be adapted to other editors. If your viewer is not listed here, you can send us a pull request or create an issue.

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SumatraPDF

We highly recommend SumatraPDF on Windows because Adobe Reader locks the opened PDF file and will therefore prevent further builds.

Forward Search

Add the following lines to your editor config:

{
  "texlab.forwardSearch.executable": "C:/Users/{User}/AppData/Local/SumatraPDF/SumatraPDF.exe",
  "texlab.forwardSearch.args": [
    "-reuse-instance",
    "%p",
    "-forward-search",
    "%f",
    "%l"
  ]
}

Inverse Search

Add the following line to your SumatraPDF settings file (Menu -> Settings -> Advanced Options):

InverseSearchCmdLine = "C:\Users\{User}\AppData\Local\Programs\Microsoft VS Code\Code.exe" -g "%f":%l

Note

: Please make sure to replace {User} with your Windows username.

You can execute the search by pressing Alt+DoubleClick in the PDF document.

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Evince

The SyncTeX feature of Evince requires communication via D-Bus. In order to use it from the command line, install the evince-synctex script.

Forward Search

Add the following lines to your editor config:

{
  "texlab.forwardSearch.executable": "evince-synctex",
  "texlab.forwardSearch.args": ["-f", "%l", "%p", "\"code -g %f:%l\""]
}

Inverse Search

The inverse search feature is already configured if you use evince-synctex. You can execute the search by pressing Ctrl+Click in the PDF document.

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Okular

Forward Search

Add the following lines to your editor config:

{
  "texlab.forwardSearch.executable": "okular",
  "texlab.forwardSearch.args": ["--unique", "file:%p#src:%l%f"]
}

Inverse Search

Change the editor of Okular (Settings -> Configure Okular... -> Editor) to "Custom Text Editor" and set the following command:

code -g "%f":%l

You can execute the search by pressing Shift+Click in the PDF document.

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Zathura

Forward Search

Add the following lines to your editor config:

{
  "texlab.forwardSearch.executable": "zathura",
  "texlab.forwardSearch.args": ["--synctex-forward", "%l:1:%f", "%p"]
}

Inverse Search

Add the following lines to your ~/.config/zathura/zathurarc file:

set synctex true
set synctex-editor-command "code -g %{input}:%{line}"

You can execute the search by pressing Alt+Click in the PDF document.

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qpdfview

Forward Search

Add the following lines to your editor config:

{
  "texlab.forwardSearch.executable": "qpdfview",
  "texlab.forwardSearch.args": ["--unique", "%p#src:%f:%l:1"]
}

Inverse Search

Change the source editor setting (Edit -> Settings... -> Behavior -> Source editor) to:

code -g "%1":%2

and select a mouse button modifier (Edit -> Settings... -> Behavior -> Modifiers -> Mouse button modifiers -> Open in Source Editor) of choice. You can execute the search by pressing Modifier+Click in the PDF document.

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Skim

We recommend Skim on macOS since it is the only native viewer that supports SyncTeX.

Additionally, enable the "Reload automatically" setting in the Skim preferences (Skim -> Preferences -> Sync -> Check for file changes).

Forward Search

Add the following lines to your editor config:

{
  "texlab.forwardSearch.executable": "/Applications/Skim.app/Contents/SharedSupport/displayline",
  "texlab.forwardSearch.args": ["%l", "%p", "%f"]
}

If you want Skim to stay in the background after executing the forward search, you can add the -g option to texlab.forwardSearch.args.

Inverse Search

Select the Visual Studio Code preset in the Skim preferences (Skim -> Preferences -> Sync -> PDF-TeX Sync support). You can execute the search by pressing Shift+⌘+Click in the PDF document.

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