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DropCSS Alternatives

DropCSS Alternatives

DropCSS

DropCSS is an unused CSS cleaner; it takes your HTML and CSS as input and returns only the used CSS as output. The core is simply some minimal glue between these awesome low-level tools:

• Fast HTML Parser
• CSSTree
• css-select

The entire logic for DropCSS is this ~60 line file.

It is recommended to also run your CSS through an optimizer like clean-css to group selectors, merge and remove redundant rules, purge unused keyframes, etc. Whether this is done before or after DropCSS is up to you, but since clean-css also minifies, it probably makes sense to run DropCSS first to avoid bouncing [and re-parsing] the output back and forth (optimize & minify -> drop) vs (optimize -> drop -> minify), though this will likely depend on your actual input; profiling is your friend.

A bit more on this project's backstory & discussions in /r/javascript and on Hacker News.

Best Open Source DropCSS Alternatives

For the best DropCSS alternative check out these alternatives which will work with your device & platform. There are several DropCSS-like software that you might want to check as well.

Purgecss

Purgecss

FreeOpen SourceSelf-HostedCSS

What is Purgecss? When you are building a website, chances are that you are using a CSS framework like Bootstrap, Materializecss, Foundation, etc... But you will only...

PurifyCSS

PurifyCSS

FreeOpen SourceSelf-HostedCSS

A function that takes content (HTML/JS/PHP/etc) and CSS, and returns only the used CSS. PurifyCSS does not modify the original CSS files. You can write to a new file...

UnCSS

UnCSS

FreeOpen SourceSelf-HostedCSS

UnCSS is a tool that removes unused CSS from your stylesheets. It works across multiple files and supports Javascript-injected CSS. How? The process by which UnCSS...

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