Digital marketing tool such as email service providers and analytics platforms often append tracking parameters to URLs. These are helpful for marketers, but can also severely decrease the effectiveness of page caching tools such as Varnish.
The purpose of this repository is to keep a centralized list of tracking query parameters used by the huge range of online marketing tools in use today.
| Name | Platform | Confirmed In | Unique Per Visitor |
|---|---|---|---|
| fbclid | |||
| gclid | Google AdWords / Google Analytics | https://support.google.com/searchads/answer/6292795 | |
| gclsrc | Google DoubleClick | https://support.google.com/searchads/answer/6292795 | |
| dclid | Google DoubleClick | https://support.google.com/campaignmanager/answer/9182069 | |
| gbraid | Google AdWords | https://support.google.com/google-ads/answer/10417364 | |
| wbraid | Google AdWords | https://support.google.com/google-ads/answer/10417364 | |
| gad_source | Google AdWords | https://support.google.com/google-ads/answer/13327296 | |
| srsltid | Google Analytics | https://support.google.com/analytics/answer/11479699 | |
| twclid | https://business.twitter.com/en/help/campaign-measurement-and-analytics/conversion-tracking-for-websites.html | ||
| yclid | Yahoo / Yandex | https://ads-help.yahoo-net.jp/s/article/H000044650 | https://yandex.com/support/metrica/data/yclid.html | |
| utm_content | Google Analytics | https://support.google.com/analytics/answer/10917952 | No |
| utm_term | Google Analytics | https://support.google.com/analytics/answer/10917952 | No |
| utm_campaign | Google Analytics | https://support.google.com/analytics/answer/10917952 | No |
| utm_medium | Google Analytics | https://support.google.com/analytics/answer/10917952 | No |
| utm_source | Google Analytics | https://support.google.com/analytics/answer/10917952 | No |
| utm_id | Google Analytics | https://support.google.com/analytics/answer/10917952 | No |
| utm_source_platform | Google Analytics | https://support.google.com/analytics/answer/10917952 | No |
| utm_creative_format | Google Analytics | https://support.google.com/analytics/answer/10917952 | No |
| utm_marketing_tactic | Google Analytics | https://support.google.com/analytics/answer/10917952 | No |
| _ga | Google Analytics | ||
| _gl | Google Analytics | https://support.google.com/analytics/answer/10071811 | Yes |
| mc_cid | Mailchimp | ||
| mc_eid | Mailchimp | ||
| _bta_tid | Bronto | https://p.bm23.com/bta.js | |
| _bta_c | Bronto | https://p.bm23.com/bta.js | |
| trk_contact | Listrak | ||
| trk_msg | Listrak | ||
| trk_module | Listrak | ||
| trk_sid | Listrak | ||
| gdfms | GoDataFeed | ||
| gdftrk | GoDataFeed | ||
| gdffi | GoDataFeed | ||
| _ke | Klaviyo | http://a.klaviyo.com/media/js/analytics/analytics.js | |
| _kx | Klaviyo | https://help.klaviyo.com/hc/en-us/articles/115005076767#the-_-kx-parameter7 | Yes |
| redirect_log_mongo_id | Springbot | ||
| redirect_mongo_id | Springbot | ||
| sb_referer_host | Springbot | ||
| mkwid | Marin | ||
| pcrid | Marin | ||
| ef_id | Adobe Advertising Cloud | https://helpx.adobe.com/media-optimizer/internal-kb/conversion-tracking-basics.html | Yes |
| s_kwcid | Adobe Analytics | https://docs.adobe.com/content/help/en/analytics/integration/advertising-analytics/advertising-analytics-workflow/aa-manual-vs-automatic-tracking.html | |
| msclkid | Microsoft Advertising | https://help.ads.microsoft.com/apex/index/3/en/60000 | Yes |
| dm_i | dotdigital | https://support.dotdigital.com/hc/en-gb/articles/360006551019-Link-tracking | Yes |
| epik | https://painlessbloganalytics.com/what-is-fbclid-how-to-remove/ | Yes | |
| pk_campaign | Piwik | ||
| pk_kwd | Piwik | ||
| pk_keyword | Piwik | ||
| piwik_campaign | Piwik | ||
| piwik_kwd | Piwik | ||
| piwik_keyword | Piwik | ||
| mtm_campaign | Matomo | https://matomo.org/docs/tracking-campaigns/ | |
| mtm_keyword | Matomo | https://matomo.org/docs/tracking-campaigns/ | |
| mtm_source | Matomo | https://matomo.org/docs/tracking-campaigns/ | |
| mtm_medium | Matomo | https://matomo.org/docs/tracking-campaigns/ | |
| mtm_content | Matomo | https://matomo.org/docs/tracking-campaigns/ | |
| mtm_cid | Matomo | https://matomo.org/docs/tracking-campaigns/ | |
| mtm_group | Matomo | https://matomo.org/docs/tracking-campaigns/ | |
| mtm_placement | Matomo | https://matomo.org/docs/tracking-campaigns/ | |
| matomo_campaign | Matomo | https://matomo.org/docs/tracking-campaigns/ | |
| matomo_keyword | Matomo | https://matomo.org/docs/tracking-campaigns/ | |
| matomo_source | Matomo | https://matomo.org/docs/tracking-campaigns/ | |
| matomo_medium | Matomo | https://matomo.org/docs/tracking-campaigns/ | |
| matomo_content | Matomo | https://matomo.org/docs/tracking-campaigns/ | |
| matomo_cid | Matomo | https://matomo.org/docs/tracking-campaigns/ | |
| matomo_group | Matomo | https://matomo.org/docs/tracking-campaigns/ | |
| matomo_placement | Matomo | https://matomo.org/docs/tracking-campaigns/ | |
| hsa_cam | Hubspot | https://knowledge.hubspot.com/ads/ad-tracking-in-hubspot | |
| hsa_grp | Hubspot | https://knowledge.hubspot.com/ads/ad-tracking-in-hubspot | |
| hsa_mt | Hubspot | https://knowledge.hubspot.com/ads/ad-tracking-in-hubspot | |
| hsa_src | Hubspot | https://knowledge.hubspot.com/ads/ad-tracking-in-hubspot | |
| hsa_ad | Hubspot | https://knowledge.hubspot.com/ads/ad-tracking-in-hubspot | |
| hsa_acc | Hubspot | https://knowledge.hubspot.com/ads/ad-tracking-in-hubspot | Yes |
| hsa_net | Hubspot | https://knowledge.hubspot.com/ads/ad-tracking-in-hubspot | |
| hsa_kw | Hubspot | https://knowledge.hubspot.com/ads/ad-tracking-in-hubspot | |
| hsa_tgt | Hubspot | https://knowledge.hubspot.com/ads/ad-tracking-in-hubspot | |
| hsa_ver | Hubspot | https://knowledge.hubspot.com/ads/ad-tracking-in-hubspot | |
| _branch_match_id | Branch | https://stackoverflow.com/a/37892369 | Yes |
| mkevt | eBay | https://partnerhelp.ebay.com/helpcenter/s/article/What-are-the-parameters-of-an-EPN-link#tracking-link-format | No |
| mkcid | eBay | https://partnerhelp.ebay.com/helpcenter/s/article/What-are-the-parameters-of-an-EPN-link#tracking-link-format | No |
| mkrid | eBay | https://partnerhelp.ebay.com/helpcenter/s/article/What-are-the-parameters-of-an-EPN-link#tracking-link-format | No |
| campid | eBay | https://partnerhelp.ebay.com/helpcenter/s/article/What-are-the-parameters-of-an-EPN-link#tracking-link-format | No |
| toolid | eBay | https://partnerhelp.ebay.com/helpcenter/s/article/What-are-the-parameters-of-an-EPN-link#tracking-link-format | No |
| customid | eBay | https://partnerhelp.ebay.com/helpcenter/s/article/What-are-the-parameters-of-an-EPN-link#tracking-link-format | No |
| igshid | https://github.com/brave/brave-browser/issues/11580 | ||
| si | Spotify / YouTube | https://community.spotify.com/t5/Desktop-Windows/si-Parameter-in-Spotify-URL-s/td-p/4538290 | |
| sms_source | Wunderkind | https://assets.bounceexchange.com/assets/smart-tag/versioned/sms_2579b6aa71148c3eb940153c85a653a0.br.js | No |
| sms_click | Wunderkind | https://assets.bounceexchange.com/assets/smart-tag/versioned/sms_2579b6aa71148c3eb940153c85a653a0.br.js | Yes |
| sms_uph | Wunderkind | https://assets.bounceexchange.com/assets/smart-tag/versioned/sms_2579b6aa71148c3eb940153c85a653a0.br.js | Yes |
| ttclid | TikTok | https://ads.tiktok.com/help/article/tiktok-click-id | Yes |
| ndclid | Next Door | Yes | |
| ScCid | Snapchat | https://businesshelp.snapchat.com/s/article/click-id | Yes |
| rtid | Rokt | https://docs.rokt.com/developers/integration-guides/web/advanced/rokt-id-tag/ | Yes |
| irclickid | Impact (formerly Impact Radius) | https://integrations.impact.com/impact-brand/docs/api-tracking-integration | Yes |
| vmcid | Yahoo | https://help.yahooinc.com/identity/docs/track-conversions |
The lists is contained in params.csv. The file contains 4 columns…
The intention is to use this list to form an ignore list for your page cache implementation.
If you come across a tracking parameter that is missing from this list, by all means, make a contribution. In order to do so, please fork the repository and issue a pull request to the master branch. Please include the “Confirmed In” column to show where this query parameter is referenced.