CSS to Base64 Converter
Encode CSS text to Base64 safely for data URLs and inline embedding.
CSS to Base64
Stylesheets are text. This tool UTF-8 encodes your CSS and applies Base64 so you can build data:text/css;base64,…
URLs or store opaque payloads. All work happens client-side.
Typical uses
Inline small critical CSS, experiments with data URLs, or piping through other tools that expect Base64 text.
Frequently Asked Questions
Will @import inside CSS still work after Base64?
Relative @import URLs may break once CSS is embedded as a data URL. Prefer self-contained CSS or absolute URLs.
Why is the output larger than my CSS file?
Base64 expands binary payload by roughly four thirds compared to raw bytes when measuring character count.
Is this the same as minifying CSS?
No. Minification removes whitespace; Base64 only encodes what you paste. Combine with a minifier first if you need smaller payloads.
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