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Chrome DevTools Autosave

DevTools Autosave on Google I/O 2012 · Intro to DevTools Autosave version 0.x (a bit outdated)

Chrome DevTools let you edit CSS and JavaScript. It even allows you to save it. I think, it’s annoying to choose a folder you want to save to for every file. DevTools Autosave saves the files on every change for you!

How to Install

Chrome DevTools Autosave consists of a Chrome extension and a server. The extension pushes changed files to the server. The server resolves URL of these files and overwrites the old ones with the new ones.

Install the Server

How to Use

$ autosave
DevTools Autosave is listening on http://127.0.0.1:9104

Open example/index.html locally (using file:// scheme).
Edit some CSS and JS.
That’s it. Files have been saved.

How Does It Work?

Google Chrome has an onResourceContentCommitted event that fires when you edit CSS and JavaScript.

chrome.experimental.devtools.inspectedWindow.onResourceContentCommitted.addListener(function(resource, content) {
    resource.url
    resource.type // 'script', 'stylesheet' or 'document' (happens when you edit inline JS or CSS)
    content // all the content of updated file as a string
})

Nice, isn’t it?

More on Autosave protocol.

FAQ

I’m developing on http://localhost/ (or http://you-name-it/) instead of file://. Can I make Autosave work?

Sure, just add a new route to the extension’s options.

Autosave Options

Alternatives

All the alternative listed below miss one Autosave’s feature: saving newly added CSS rules to the last stylesheet file.

Workspaces

chrome-devtools-workspaces

Latest Chrome DevTools support Workspaces which makes Chrome DevTools Autosave obsolete.

The same as Autosave but doesn’t require you to install the server and does both ways syncing!

Two-way sync, requires to install Node and write JS config files.

Works only with JetBrains IDEs, such as WebStorm.

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Auto-saving CSS and JavaScript changes from the Chrome Developer Tools

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