After implementing subresource integrity and switching over to CloudFlare, I noticed resources like CSS and JavaScript were breaking on my site. I ran into the same issue as this guy. CloudFlare presents these options and I didn't think twice about turning them on.

CloudFlare interface showing three checkboxes for 'Auto Minify'...HTML, CSS, and JS

Because there's an integrity hash on these files, they fail to load when modified. CloudFlare's 'auto-minification' changes, causing the hash check to fail.

After turning off these optimizations, CSS and JavaScript started loading again (after purging the cache). I still want to minify my CSS and JS, but I'll have to implement it on the server side.


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John Solly Profile Picture
John Solly Profile Picture

John Solly

Hi, I'm John, a Software Engineer with a decade of experience building, deploying, and maintaining cloud-native geospatial solutions. I currently serve as a senior software engineer at New Light Technologies (NLT), where I work on a variety of infrastructure and application development projects.

Throughout my career, I've built applications on platforms like Esri and Mapbox while also leveraging open-source GIS technologies such as OpenLayers, GeoServer, and GDAL. This blog is where I share useful articles with the GeoDev community. Check out my portfolio to see my latest work!