electron/docs/api/chrome-command-line-switches.md

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# Supported Chrome command line switches
This page lists the command line switches used by the Chrome browser that are also supported by
Electron. You can use [app.commandLine.appendSwitch][append-switch] to append
them to your app's main script before the [ready][ready] event of [app][app]
module is emitted:
```javascript
var app = require('app');
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app.commandLine.appendSwitch('remote-debugging-port', '8315');
app.commandLine.appendSwitch('host-rules', 'MAP * 127.0.0.1');
app.on('ready', function() {
// Your code here
});
```
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## --client-certificate=`path`
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Sets the `path` of client certificate file.
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## --ignore-connections-limit=`domains`
Ignore the connections limit for `domains` list separated by `,`.
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## --disable-http-cache
Disables the disk cache for HTTP requests.
## --remote-debugging-port=`port`
Enables remote debugging over HTTP on the specified `port`.
## --proxy-server=`address:port`
Use a specified proxy server, which overrides the system setting. This switch only
affects HTTP and HTTPS requests.
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## --proxy-pac-url=`url`
Uses the PAC script at the specified `url`.
## --no-proxy-server
Don't use a proxy server and always make direct connections. Overrides any other
proxy server flags that are passed.
## --host-rules=`rules`
A comma-separated list of `rules` that control how hostnames are mapped.
For example:
* `MAP * 127.0.0.1` Forces all hostnames to be mapped to 127.0.0.1
* `MAP *.google.com proxy` Forces all google.com subdomains to be resolved to
"proxy".
* `MAP test.com [::1]:77` Forces "test.com" to resolve to IPv6 loopback. Will
also force the port of the resulting socket address to be 77.
* `MAP * baz, EXCLUDE www.google.com` Remaps everything to "baz", except for
"www.google.com".
These mappings apply to the endpoint host in a net request (the TCP connect
and host resolver in a direct connection, and the `CONNECT` in an HTTP proxy
connection, and the endpoint host in a `SOCKS` proxy connection).
## --host-resolver-rules=`rules`
Like `--host-rules` but these `rules` only apply to the host resolver.
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[app]: app.md
[append-switch]: app.md#appcommandlineappendswitchswitch-value
[ready]: app.md#event-ready
## --ignore-certificate-errors
Ignores certificate related errors.
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## --ppapi-flash-path=`path`
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Sets the `path` of the pepper flash plugin.
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## --ppapi-flash-version=`version`
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Sets the `version` of the pepper flash plugin.
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## --log-net-log=`path`
Enables net log events to be saved and writes them to `path`.
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## --v=`log_level`
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Gives the default maximal active V-logging level; 0 is the default. Normally
positive values are used for V-logging levels.
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Passing `--v=-1` will disable logging.
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## --vmodule=`pattern`
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Gives the per-module maximal V-logging levels to override the value given by
`--v`. E.g. `my_module=2,foo*=3` would change the logging level for all code in
source files `my_module.*` and `foo*.*`.
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Any pattern containing a forward or backward slash will be tested against the
whole pathname and not just the module. E.g. `*/foo/bar/*=2` would change the
logging level for all code in the source files under a `foo/bar` directory.
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To disable all chromium related logs and only enable your application logs you
can do:
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```javascript
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app.commandLine.appendSwitch('v', -1);
app.commandLine.appendSwitch('vmodule', 'console=0');
```