Directive Index

Alphabetical reference of all mod_pagespeed 1.1 configuration directives with Apache and nginx syntax, default values, and links to full documentation.

All mod_pagespeed 1.1 directives are listed alphabetically below. In Apache, prefix each directive name with ModPagespeed (e.g., ModPagespeedEnableFilters). In nginx, prefix with pagespeed and terminate with a semicolon (e.g., pagespeed EnableFilters ...;).

Directive	Default	Description	Docs
`AddResourceHeader`	(none)	Adds custom header to optimized resources	Configuration
`AdminDomains`	Allow *	ACL for admin page access	Admin Console
`Allow`	(none)	Allows optimization of resources matching a URL pattern	Domain Configuration
`AdminPath`	/pagespeed_admin	URL path for admin pages (nginx)	Admin Console
`CacheFlushFilename`	cache.flush	Filename for legacy cache flush	Caching
`CacheFlushPollIntervalSec`	5	Interval to check for flush file	Caching
`CacheFragment`	(auto)	Cache partition key	Caching
`ConsoleDomains`	Allow *	ACL for console access	Admin Console
`ConsolePath`	/pagespeed_console	URL path for console (nginx)	Admin Console
`CriticalImagesBeaconEnabled`	on	Enables beacon for image optimization	Image Filters
`CssFlattenMaxBytes`	102400	Max size for flattened CSS	CSS Filters
`CssImageInlineMaxBytes`	0	Max image size to inline in CSS	CSS Filters
`CssInlineMaxBytes`	2048	Max CSS file size to inline	CSS Filters
`CssOutlineMinBytes`	3000	Min inline CSS to externalize	CSS Filters
`DefaultSharedMemoryCacheKB`	50000	Shared memory metadata cache size	Caching
`Disallow`	(none)	Prevents optimization of resources matching a URL pattern	Domain Configuration
`DisableFilters`	(none)	Disables specific filters	Filter Selection
`DisableRewriteOnNoTransform`	on	Honors Cache-Control: no-transform	Configuration
`Domain`	(none)	Authorizes a domain for resource fetching	Domain Configuration
`EnableCachePurge`	off	Enables per-URL cache purge	Caching
`EnableFilters`	(none)	Enables specific filters	Filter Selection
`FetcherTimeoutMs`	5000	Timeout for resource fetches	Caching
`FetchHttps`	(off)	Enables HTTPS resource fetching	HTTPS Configuration
`FetchWithGzip`	off	Fetches resources with gzip Accept-Encoding	Caching
`FileCachePath`	(required)	Path for file-based cache storage	Caching
`FileCacheSizeKb`	102400	Maximum file cache size in KB	Caching
`ForbidAllDisabledFilters`	off	Forbids all non-enabled filters	Filter Selection
`ForbidFilters`	(none)	Permanently disables specific filters	Filter Selection
`GlobalAdminDomains`	Allow *	ACL for global admin access	Admin Console
`GlobalStatisticsDomains`	Allow *	ACL for global statistics access	Admin Console
`GlobalAdminPath`	/pagespeed_global_admin	URL path for global admin (nginx)	Admin Console
`GlobalStatisticsPath`	(nginx path)	URL for global stats (nginx)	Admin Console
`HonorCsp`	off	Respects Content-Security-Policy headers	Configuration
`HttpCacheCompressionLevel`	9	Compression level for cached HTTP responses	Caching
`ImageInlineMaxBytes`	3072	Max image size to inline as data URI	Image Filters
`ImageLimitOptimizedPercent`	100	Only serve if optimized is smaller	Image Filters
`ImageMaxRewritesAtOnce`	8	Parallel image optimization limit	Image Filters
`ImageRecompressionQuality`	85	Image recompression quality	Image Filters
`ImageResolutionLimitBytes`	32000000	Max image size to optimize	Image Filters
`ImplicitCacheTtlMs`	300000	Cache TTL for resources without explicit headers	Caching
`InPlaceResourceOptimization`	on	Enables IPRO	Caching
`InPlaceRewriteDeadlineMs`	10	IPRO rewrite deadline per flush	Caching
`InPlaceSMaxAgeSec`	10	s-maxage for IPRO responses	Caching
`JpegRecompressionQuality`	-1	JPEG quality (-1 = use general)	Image Filters
`JsInlineMaxBytes`	2048	Max JS file size to inline	JavaScript Filters
`JsOutlineMinBytes`	3000	Min inline JS to externalize	JavaScript Filters
`ListOutstandingUrlsOnError`	off	Shows fetch URLs in error responses	Configuration
`LoadFromFile`	(none)	Loads resources from filesystem	Domain Configuration
`LoadFromFileCacheTtlMs`	(ImplicitCacheTtlMs)	Cache TTL for filesystem-loaded resources	Caching
`LogDir`	(none)	Directory for statistics logging	Admin Console
`LowercaseHtmlNames`	off	Lowercases HTML tag/attribute names	Configuration
`LRUCacheByteLimit`	16384	Max entry size for LRU cache	Caching
`LRUCacheKbPerProcess`	1024/8192	LRU cache size per process	Caching
`MapOriginDomain`	(none)	Maps public domain to origin for fetching	Domain Configuration
`MapProxyDomain`	(none)	Proxies and optimizes content from a separate origin	Domain Configuration
`MapRewriteDomain`	(none)	Rewrites resource URLs to another domain	Domain Configuration
`MemcachedServers`	(none)	Memcached server list	Caching
`MemcachedTimeoutUs`	500000	Memcached operation timeout	Caching
`MessageBufferSize`	0	Size of message history buffer	Admin Console
`MessagesDomains`	Allow *	ACL for message history	Admin Console
`MessagesPath`	(nginx path)	URL for messages (nginx)	Admin Console
`ModifyCachingHeaders`	on	Sets caching headers on HTML	Configuration
`PreserveUrlRelativity`	off	Preserves relative URLs	Configuration
`PurgeMethod`	(none)	HTTP method for cache purge	Caching
`RateLimitBackgroundFetches`	on	Rate-limits background fetches	Caching
`RedisDatabaseIndex`	0	Redis database index	Caching
`RedisReconnectionDelayMs`	1000	Redis reconnection delay	Caching
`RedisServer`	(none)	Redis server address	Caching
`RedisTimeoutUs`	50000	Redis operation timeout	Caching
`RedisTTLSec`	-1	Redis entry TTL	Caching
`RespectVary`	off	Respects Vary headers on resources	Configuration
`RetainComment`	(none)	Wildcard pattern for comments to keep	HTML Filters
`RewriteDeadlinePerFlushMs`	10	Rewrite timeout per HTML flush	Caching
`RewriteLevel`	CoreFilters	Baseline filter set	Filter Selection
`RewriteRandomDropPercentage`	0	Random percentage of rewrites to skip	Filter Selection
`ShardDomain`	(none)	Distributes resources across domains	Domain Configuration
`ShmMetadataCacheCheckpointIntervalSec`	300	Checkpoint interval for shm cache	Caching
`SslCertDirectory`	(none)	SSL certificate directory	HTTPS Configuration
`SslCertFile`	(none)	SSL certificate file	HTTPS Configuration
`StaticAssetPrefix`	/pagespeed_static/	URL prefix for static assets	Configuration
`Statistics`	on	Enables statistics collection	Admin Console
`StatisticsDomains`	Allow *	ACL for statistics access	Admin Console
`StatisticsLogging`	off	Enables logging for console graphs	Admin Console
`StatisticsPath`	(nginx path)	URL for statistics (nginx)	Admin Console
`SupportNoScriptEnabled`	on	Inserts noscript redirect	Troubleshooting
`UsePerVhostStatistics`	off	Per-virtual-host statistics	Admin Console
`WebpRecompressionQuality`	80	WebP quality level	Image Filters
`XHeaderValue`	(version)	X-Mod-Pagespeed/X-Page-Speed header value	Configuration

See also