1. Overview
We’re releasing Media Viewer gradually, a few wikis at a time, to test it carefully before deploying to the next batch of sites. So far, the tool has been well received on our first pilot sites: Catalan, Hungarian and Korean Wikipedias, as well as on English Wikivoyage, as outlined below. Next Thursday, we plan to deploy to some of our first large wikis: Dutch, French, Japanese, Spanish and Swedish Wikipedias. Learn more about this release plan here:

We’re now logging about 336,000 image views per day on a global basis, as shown on this graph: 

About half of these views are coming from the Hungarian Wikipedia, and the rest from Wikimedia Commons, English Wikipedia and other pilots. More metrics dashboards are available for selected sites on this page: 

3. Performance

We are now tracking image load performance globally, and fist results suggest that images take over a second to load on average (50th percentile), but can take up to 5 seconds when looking at worst case for most users (90th percentile), as shown in this graph: 

We’re also encouraged by early comparisons of the time it takes to open an image with Media Viewer versus on a Commons File, the current default: the mean load times for these two methods seem to be very close, on the order of 2-3 seconds on a cold cache, as shown in this preliminary graph:

4. Surveys

We are now running surveys in multiple languages, to validate whether or not this feature is useful to readers and editors alike. Overall response so far is generally favorable. Here are the current results:

* English Survey: 64% find the tool useful, 12% don’t find it useful, 24% are not sure (50)
* Hungarian Survey: 47% find the tool useful, 47% don’t find it useful, 5% are not sure (268)
* Catalan Survey: 62% find the tool useful, 15% don’t find it useful, 23% are not sure (13)

We’re also starting new surveys in French, German and Portuguese. You can find links to live results and comments from all these surveys here:

5. Usability

For the past few months, we have been running a series of usability studies, with positive results. Testers are typically able to complete most common tasks successfully, and they have helped us find new ways to improve the user experience for areas they found confusing.