Visualize package dependencies in your Dart project

Make sure you run dart pub get or dart pub upgrade in your target project directory.

Example

Here's an example of pubviz run on itself.

Installing

Activate pubviz.

$ dart pub global activate pubviz

Use

If you have configured your PATH correctly, you can run pubviz directly.

$ pubviz

Otherwise, you can use the pub global command.

$ dart pub global run pubviz

Generate and open an HTML file for the package on the current path.

$ pubviz

Will open the default browser to something like:

Print GraphViz dot format to command line for a package on a specified path.

$ pubviz -a print /path/to/http_package

You should see output something like:

digraph G {
  node [fontname=Helvetica];
  edge [fontname=Helvetica, fontcolor=gray];

  http [label="http
1.2.0",fontsize=18,style=bold,shape=box,margin="0.25,0.15"];
  http -> async [label="^2.5.0",penwidth=2];
  http -> http_parser [label="^4.0.0",penwidth=2];
  http -> path [label="^1.8.0",penwidth=2];

  async [label="async
2.11.0",shape=box,margin="0.25,0.15",style=bold];
  async -> collection [label="^1.15.0"];

  collection [label="collection
1.18.0",shape=box,margin="0.25,0.15",style=bold];

  http_parser [label="http_parser
4.0.2",shape=box,margin="0.25,0.15",style=bold];
  http_parser -> collection [label="^1.15.0",color=gray];
  http_parser -> source_span [label="^1.8.0",color=gray];

  path [label="path
1.9.0",shape=box,margin="0.25,0.15",style=bold];
}

Generate PDF, PNG and other files

GraphViz tool allows dot format to be converted to various types of outputs like PNG, PDF or SVG.

In order to export pubviz data to PNG file you need to install GraphViz package on your machine (see detailed installation instructions).

On macOS:

brew install graphviz

On Windows:

winget install graphviz

Then you can save the pubviz output to a file and convert it with dot command to desired output type, e.g.:

pubviz -a print > output.dot
dot -Tpdf output.dot -o output.pdf

The full list of possible output types is available on the GraphViz website.

pubviz -? prints help

$ pubviz -?
Usage: pubviz [<args>] [<package path>]

Arguments:
  -a, --action=<action>
            [open] (default)       Like "serve" but also opens the browser.
            [print]                Print the raw DOT output to stdout.
            [serve]                Hosts the web app on a local server.

  -i, --ignore-packages            A comma separated list of packages to exclude in the output.
  -o, --[no-]flag-outdated         Check pub.dev for latest packages and flag those that are outdated.
                                   (defaults to on)
  -d, --direct-dependencies        Include only direct dependencies.
  -p, --production-dependencies    Include only production (non-dev) dependencies.
  -v, --version                    Print the version of pubviz and exit.
  -w, --[no-]workspace             Include all packages in the workspace.
  -?, --help                       Print this help content.

If <package path> is omitted, the current directory is used.