####User story & summary:
As a mobile web user, I want a cleaner and less verbose account creation form so that I can view all required fields at a glance without scrolling, and complete registration with reduced information overload.
####Summary
Redesign the mobile web account creation form to follow Codex guidelines and reduce visual and cognitive complexity. The updated design shortens explanatory text, improves layout, and allows users to view all required fields on a typical mobile screen without scrolling.
####Background & design
See: {T415659} & {T408649}
####Experiment Details:
- [[ https://docs.google.com/document/d/1kV7f-av0EWs5umVSDxx5CWJEc-6K7m5FUmaPwUTu8aU/edit?tab=t.vtzjfm48qtiq#heading=h.92fgmsxazee6 | WE1.8.3 Measurement Plan ]]
- Existing baselines:
- ~38,000 user impressions of account creation form that *start* filling out the form. [[ https://superset.wikimedia.org/superset/dashboard/194a16fe-40a8-4915-af3e-453cb0a0d41e/?native_filters_key=HX-gnGh362B60WeUeXYoQ3MJLr4VpysSutMtkNrAlqAbFgF25qJXHosCwkUTuhnh | Account Creation Superset Dashboard | superset data ]]
- ~2,500 new accounts created on enwiki per day [stats.wikimedia](https://stats.wikimedia.org/#/en.wikipedia.org/contributing/new-registered-users/normal|bar|1-month|~total|daily)
- Exposure prediction:
- Duration of experiment
- start date: **March 23, 2026**
- end date: **June 30, 2026**
- Machine readable name: `we-1-8-account-creation-form-v1`
- stream/schema:
- Link to test-kitchen dashboard experiment config:
- Wikis / groups: **enwiki **
- Automated analysis metrics, including link to metric catalog, instrumentation source:
- Manual analysis metrics:
- Link to the aftermath task:
####Acceptance Criteria:
- Set up A/B test on Test Kitchen (at least 24 hours prior to release)
- Release experiment on start date listed above (or communicate if a shift in release is necessary)
####Metrics added to the experiment
| Metric | Instrument source |
| Experiment exposures | [[ https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/extensions/WikimediaEvents/+/df552c8d9d008db98e148fd263435ea9fca5f906/modules/ext.wikimediaEvents/specialCreateAccount/experimentInstrumentation.js#30 | experiment_exposure ]] |
| Fraction of Special:CreateAccount submissions with email | [[https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/extensions/WikimediaEvents/+/df552c8d9d008db98e148fd263435ea9fca5f906/modules/ext.wikimediaEvents/specialCreateAccount/experimentInstrumentation.js#61 | on submit ]] |
| Account Creation attempts (= all Special:CreateAccount submissions) | [[https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/extensions/WikimediaEvents/+/df552c8d9d008db98e148fd263435ea9fca5f906/modules/ext.wikimediaEvents/specialCreateAccount/experimentInstrumentation.js#55 | on submit ]] |
| Unsuccessful account creation attempts (= Page visits with error present) | [[ https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/extensions/WikimediaEvents/+/df552c8d9d008db98e148fd263435ea9fca5f906/modules/ext.wikimediaEvents/specialCreateAccount/experimentInstrumentation.js#36 | 'page_visit_with_error' ]] |
| Special:CreateAccount Create-Account-button clickthrough | [[ https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/extensions/WikimediaEvents/+/df552c8d9d008db98e148fd263435ea9fca5f906/modules/ext.wikimediaEvents/specialCreateAccount/experimentInstrumentation.js#49 | 'create account button' ]] |
| Special:CreateAccount user policy link clickthrough | [[ https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/extensions/WikimediaEvents/+/df552c8d9d008db98e148fd263435ea9fca5f906/modules/ext.wikimediaEvents/specialCreateAccount/experimentInstrumentation.js#44 | 'username policy link' ]] |
##### Unavaialble metrics:
Due to an inherent limitation of how test-kitchen works, we only can instrument the Special:CreateAccount form itself (which lives technically on the auth.wikimedia.org domain) and nothing on the origin wiki, so the following are not possible for this experiment:
| Account creation rate | [[ https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/extensions/WikimediaEvents/+/refs/heads/master/modules/ext.wikimediaEvents/accountCreation/useAccountCreationInstrument.js#19 | generic account creation instrument ]] |
| Constructive edit rate (mobile web) | [[ https://gerrit.wikimedia.org/g/mediawiki/extensions/WikimediaEvents/+/refs/changes/00/1242300/1/includes/ExperimentEditIngress.php#39 | edit_saved ]] |
| Constructive edit rate of newer editors (mobile web) | [[ https://gerrit.wikimedia.org/g/mediawiki/extensions/WikimediaEvents/+/refs/changes/00/1242300/1/includes/ExperimentEditIngress.php#39 | edit_saved ]] |