Toby Yes. Here's the full requirements/optional extensions from composer.json:
"require": {
"php": ">=5.3.3",
"ext-dom": "*",
"ext-filter": "*",
"lib-pcre": ">=7.2"
},
"suggest": {
"ext-intl": "Allows international URLs to be accepted by the URL filter",
"ext-json": "Enables the generation of a JavaScript parser",
"ext-mbstring": "Enables some optimizations in the PHP renderer",
"ext-tokenizer": "Enables optimizations in the PHP renderer",
"ext-xsl": "Enables the XSLT renderer",
"ext-zlib": "Enables gzip compression when scraping content via the MediaEmbed plugin"
},
