Removes or replaces images that meet certain size criteria or originate from certain sources.
Image filtering is not only about removing annoying and bandwidth consuming banners. Invisible tracking images (also known as “web bugs”) are widely used by many commercial websites to keep track of the pages visited by the user. Those images (usually transparent 1x1 GIF images) can be easily intercepted. For example, something similar to
<img src="http://server-au.imrworldwide.com/cgi-bin/count?cid=au_newscorp_0" width=1 height=1>(a typical “web bug”) will be converted to harmless
<img src="http://foxy/null.gif" width="1" height="1" border="0">
src_include and src_exclude parameters define a set of image URLs to which filtering is applied. Unlike the standard include and exclude parameters that define addresses of the pages containing images, these parameters define addresses of images themselves (src attribute of the img HTML element).
Format:
scr_include = url_template scr_exclude = url_template
Besides images, this filter also removes shockwave objects, iframe and script elements if their source URLs match the URLs specified by src_include and src_exclude parameters.
Defines size match mode. Possible values:
Format:
size_match = min size_match = exact size_match = any
The Image Filter will try all possible ways to determine image size when the size does matter:
Format:
size = width x height
Defines sizes of the images that must be deleted or replaces by the filter. There must be at least one size element defined if size_match is set to exact.
Defines minimum width to height ratio when size_match is set to min_size. Set to 0 if you want to use minimum size only.
Format:
min_ratio = number
Defines minimum image size when size_match is set to min_size. Set to 1x1 if you want to use minimum ratio only.
Format:
min_size = width x heigth
Tells the filter what to do with the images that match the criteria.
Format:
action = delete action = replace:URL
delete - Remove images.
replace:URL - Replace images with the image defined by
URL. URL can be either a path relative to
httproot directory or an absolute URL.
If set to true, prevents maps from being deleted/replaced.
Format:
keep_maps = boolean
Note: some images are downloaded dynamically by scripts or are results of redirects. Such images cannot be easily removed by simply analyzing HTML code of the page that contains them. The browser still has to issue requests to fetch those images, so they can still be filtered out. But at this point it is unknown whether they are maps or not. To avoid damage such images might not be filtered when keep_maps is set to true.
If set to true, prevents images originating from the same domain as the page that contains them from being deleted/replaced. There are many websites where local images are benign; all the banners are coming from different domains (such as doubleclick.net).
Format:
keep_same_domain = boolean
See also Common Filter Parameters.
type = Image Filter name = Banners By Size enabled = true logging = true time = user = include = * size_match = exact min_size = 1x1 min_ratio = 0.000000 keep_maps = false keep_same_domain = true size = 88x31 size = 89x26 size = 88x60 size = 120x60 size = 120x90 size = 120x240 size = 120x600 size = 125x125 size = 160x600 size = 180x150 size = 234x60 size = 468x60 size = 240x400 size = 250x250 size = 300x250 size = 336x280 size = 392x72 size = 400x40 size = 400x50 size = 720x300 size = 728x90 action = delete src_include = * src_exclude = canadiandriver.com src_exclude = autos.yahoo.com src_exclude = *futureshop.* src_exclude = *bestbuy.* type = Image Filter name = Banners By Source (Generic Path Templates) enabled = true logging = true time = user = include = * exclude = *.google.* size_match = any min_size = 1x1 min_ratio = 0.000000 keep_maps = false keep_same_domain = false action = delete src_include = *.ad.* src_include = *.ads.* src_include = *.adserver.* src_include = *.adswap.* src_include = *.hotlog.* src_include = */*/ad src_include = */*/adimage* src_include = */*/adlog src_include = */*/adredir* src_include = */*/ads src_include = */*/adserver src_include = */*banner* src_include = */ad src_include = */ad.* src_include = */adimage* src_include = */adlog src_include = */adredir* src_include = */ads src_include = */ads.* src_include = */pagead src_include = *advertising* src_include = *banner* src_include = *click* src_include = *counter* src_include = ad-* src_include = ad.* src_include = adbot.* src_include = adbutler.* src_include = adcenter.* src_include = adcentral.* src_include = adclick.* src_include = adclient.* src_include = adclix.* src_include = adcontent.* src_include = adcounter.* src_include = adcreative.* src_include = adcycle.* src_include = adengine.* src_include = adevents.* src_include = adfarm.* src_include = adflow.* src_include = adfront.* src_include = adhost.* src_include = adimages.* src_include = adimg.* src_include = adlink.* src_include = adlog.* src_include = adlog.* src_include = adman.* src_include = admanager.* src_include = admedia.* src_include = admonitor.* src_include = admotion.* src_include = adnet.* src_include = adnetwork.* src_include = adpick.* src_include = adpop.* src_include = adproxy.* src_include = adpulse.* src_include = adpush.* src_include = adrates.* src_include = adredirect.* src_include = adremote.* src_include = adrunner.* src_include = ads-* src_include = ads.* src_include = ads src_include = adserv* src_include = adsrv* src_include = adstream.* src_include = adstudio.* src_include = adswap.* src_include = adsweb.* src_include = adtech.* src_include = adtracking.* src_include = adv-* src_include = adv.* src_include = advert* src_include = affiliate.* src_include = affiliates.* src_include = affiliation.* src_include = count.* src_include = free-* src_include = free.* src_include = gpaper* src_include = hit-* src_include = hit.* src_include = hitlist.* src_include = imageads.* src_include = link.* src_include = links.* src_include = linktracker.* src_include = log-* src_include = log.* src_include = popup* src_include = promo.* src_include = pub.* src_include = pubs.* src_include = realmedia.* src_include = redir.* src_include = redirect.* src_include = reklaam* src_include = reklama* src_include = stat.* src_include = stats-* src_include = stats.* src_include = survey.* src_include = sweepstakes.* src_include = track-* src_include = track.* src_include = tracker.* src_include = tracking.* src_include = traffic* src_include = partner*.*.* src_include = redirect.* src_exclude = *futureshop.* src_exclude = *bestbuy.* src_exclude = *canadiantire.*