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
FreeOpen SourceSelf-HostedCSSWhat 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
FreeOpen SourceSelf-HostedCSSA 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
FreeOpen SourceSelf-HostedCSSUnCSS 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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