Jonas Öberg | 10 Dec 19:30 2014
Picon now up w/ Commons data

Dear all,

thanks for all your help with answering questions and giving feedback
over the last couple of months. I'm happy to say that we're finally at
a stage where we've hashed 22,452,638 images from Wikimedia Commons
and launched in public beta: is an open API as well as browser plugins, that can query and
get information about images using a perceptual hash that's easy and
quick to calculate in a browser.

What the browser extensions allow you to do is match an image you find
"in the wild" against Wikimedia Commons. If it can be matched against
an image from Commons, it'll show you the title, author, and license,
and give you links back to Wikimedia, the license, and a quick and
handy "Copy as HTML" to copy the image and attribution as a HTML
snippet for pasting into Word, LibreOffice, Wordpress, etc.

Our API provides lookup functions to find information using a URL (the
Commons' page name URL) or using the perceptual hash. You get
information back as JSON in W3C Media Annotations format. of course,
the information you get back is no better than the one provided by the
Commons API, so if you already have a page name URL, you may as well
query it directly, and rely on our API only for searching by
perceptual hashes.

The algorithm we use for calculating perceptual hashes, which you'll
need to query our API, is at

(Continue reading)

bawolff | 5 Dec 03:37 2014

Re: Duplicate removal?

> >
> > Message: 4
> > Date: Thu, 4 Dec 2014 14:58:37 -0500
> > From: "Sreejith K." <>
> > To: Wikimedia Commons Discussion List <>
> > Subject: Re: [Commons-l] Duplicate removal?
> > Message-ID:
> >         <>
> > Content-Type: text/plain; charset="utf-8"
> >
> > I am using Wikimedia APIs to create a gallery of duplicates and routinely
> > clean them. You can see the results here.
> >
> >
> >
> > The page also has a link to the script. If anyone is interested in using
> > this script, let me know and I can work with you to customize it.
> >
> > - Sreejith K.
> >
> >
See also which lists files that have the most byte for byte duplicates (really most of the time those should use file redirects).


Thanks Jonas for experimenting with this sort of thing. I always wished we did something with preceptual hashes internally in addition to the sha1 hashes we do currently.


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Jonas Öberg | 4 Dec 08:31 2014

Duplicate removal?

Hi everyone,

In our work with[1], we've come across a number of duplicate
files in Commons. Some of them are explainable, such as PNGs which
also have a thumbnail as JPG[2], but others seem to be more clear-cut
duplicated uploads, like [3] and [4], and yet others are the same work
but different sizes like [5] and [6].

Going through this is quite an effort, and likely requires a bit of
manual work. Is there any organised structure/group of people, that
deal with duplicate works? We'd love to contribute our findings to
such an effort once we clean up our data a bit.

[2] Like,_Bellows_Falls,_by_P._W._Taft.png

Jonas Öberg, Founder & Shuttleworth Foundation Fellow
Commons Machinery | jonas <at>
E-mail is the fastest way to my attention

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Béria Lima | 3 Dec 01:04 2014

Re: Funding a new gear for WM photographer Poco a poco

My bad Geni, I never had one and therefore priced then as two itens and not one.

Béria L
​. de Rodríguez

Imagine um mundo onde é dada a qualquer pessoa a possibilidade de ter livre acesso ao somatório de todo o conhecimento humano. Ajude-nos a construir esse sonho.

2014-12-02 21:57 GMT-02:00 geni <geniice <at>>:

On 2 December 2014 at 23:17, Santiago Navarro Sanz <> wrote:
Sorry for crossposting:
Help one of the best volunteer photographers in Wikimedia Commons restore his stolen equipment.

Diego Delso is known as Poco a poco in Wikimedia Commons. In case you don't know, Wikimedia Commons is a media file repository where anyone can share freely-licensed content with everyone. Wikipedia uses Wikimedia Commons as it's image repository, so, in fact, most of the times you view an image in Wikipedia, you are actually viewing a Wikimedia Commons image.

While Diego is just one of the thousands of Wikimedia Commons volunteers, he is a very special one: he's one of the main Commons contributors ever, having some amazing records, such as being the user with the highest amount of Featured Pictures ever (153 images) and also the one with the highest amount of quality images ever, with 5,777 Quality Images. That's an awesome amount of very high quality material, that Diego has given to every living person for free.

Never heard about Wikimedia Commons? It's the repository that hosts allmultimedia files that you can see (and download) in Wikipedia and all other Wikimedia projects. Diego's files are used in those projects and are also available for everybody else with a free license.

Furthermore, Diego has contributed in Wikimedia Commons in other ways. One of them is by supporting (by being an organizer or a jury) two of the most importantphotographic contests in the Wikimedia movement (and in the world!): Wiki Loves Monuments and Wiki Loves Earth.

Sadly, while Diego was in Buenos Aires after participating in a Wikimedia Iberoamerican Encounter with other Wikimedia volunteers, he got his equipment stolen. In this unfortunate event, he didn't only lost his camera, zoom lenses and laptop, but also every single picture he took during his 2 weeks trip in South America, which he was going to upload to Wikimedia Commons so they could be used by everyone, everywhere.

As Wikimedia volunteers and Diego's friends, we could not stand aside of this, so we decided to help him to restore his equipment. You can help, too, by contributing to this campaign!

Our goal is simple: to collect enough money to help Diego to buy exactly the same equipment he lost.

All the gear he lost in Argentina is described below, with a reference to the price from Amazon for the same equipment.

Tipo Modelo Preço
Camera body Canon EOS 5D Mark II $ 2,694.00
Objective fisheye f/4.0 Canon EF 8-15mm L USM $ 1,349.00
Objective wide-angle f/4.0 Canon EF 17-40mm L USM $ 839.00
Objective wide-angle to telephoto f/4.0 Canon EF 24-105mm L IS UVM $ 1,149.00
Laptop Acer Aspire 1810T $ 600.00
Total $ 6,631.00

Cost wise you don't buy the 5DII and 24-105mm as separate items. You buy the 5DIII with the 24-150mm as a kit.


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Lydia Pintscher | 22 Nov 13:32 2014

access to data on Wikidata is coming on Dec 2nd

Hey everyone :)

I've been asked to enable access to the data on Wikidata for Commons.
I'm happy to make that happen. We'll enable access on December 2nd.
What does this mean? You will be able to access data from an item on
Wikidata like the date of birth of an artist or the name of a city in
different languages. Where and how much you make use of that is up for
you to decide. You will be able to access the data in two ways. The
first one is the #property parser function
( The
second one is via Lua
( There
are two big caveats at this point. 1) You will only be able to access
data for items that are connected via a sitelink to the page you want
to show the data on. We're currently working on allowing accessing
data from any item. This should be available around January/February.
2) You can not use this to store meta data (like the date a picture
was taken or who took it) about individual files. This will in the
future be stored on Commons itself as part of the structured data
project (

Please let me know if you have any questions. I am looking forward to
more integration between Commons and Wikidata and all the things this
will make possible. It'd be great if you could help with updating and
expanding The
relevant page on Wikidata is


Lydia Pintscher -
Product Manager for Wikidata

Wikimedia Deutschland e.V.
Tempelhofer Ufer 23-24
10963 Berlin

Wikimedia Deutschland - Gesellschaft zur Förderung Freien Wissens e. V.

Eingetragen im Vereinsregister des Amtsgerichts Berlin-Charlottenburg
unter der Nummer 23855 Nz. Als gemeinnützig anerkannt durch das
Finanzamt für Körperschaften I Berlin, Steuernummer 27/681/51985.

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Fabrice Florin | 29 Oct 01:51 2014

Media Viewer Update: More Improvements

Hi everyone,

We just released a few more improvements to Media Viewer, based on community feedback:

* An easier way to disable Media Viewer for personal use
* Re-enable Media Viewer from a file page
* Rename File page button: "Open in Media Viewer"
* Make MediaViewer text larger in Monobook

These features are now live on Wikimedia Commons and sister projects (1), and will be deployed on all Wikipedias this Thursday by 20:00 UTC.

The new Disable/Enable features make it much easier to turn Media Viewer on or off, by clicking on a prominent 'cogs' icon, as described in the Help FAQ (2). 

Next, we are working on this last 'must-have’ improvement for this release:
* a caption or description right below the image

These improvements are based on the most frequent requests from our recent community consultation (3) and user research (4). Learn more about these features on the Media Viewer Improvements page (5), and please let us know what you think on the Media Viewer talk page (6). 

Many thanks to all the community members who suggested these improvements. Our user research so far confirms that they provide a better experience for readers and casual editors, our target audience for Media Viewer.

We will send one more update in mid-November, once all these improvements has been released and tested.

Regards as ever,

Fabrice and the Multimedia Team

(1) Pictures of the Day on Commons:

(2) Help page:
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Yana Welinder | 27 Oct 18:50 2014

Re-licensing Wikimedia logos on Commons to CC BY-SA 3.0

Hi folks,

I'm happy to announce that we are re-licensing the Wikimedia logos on Commons to CC BY-SA 3.0:

I would really appreciate your help with replacing the {{Copyright by Wikimedia}}[1] templates on the logos with the {{Wikimedia trademark}}[2] and {{cc-by-sa-3.0}}[3] templates. But we don't want to replace templates on the MediaWiki[4] and the Community[5] logos, which were originally released under free licenses.

There are also some pages on Commons, like this one[6], that may need to be updated based on the re-licensed logos.









Yana Welinder
Legal Counsel
Wikimedia Foundation
415.839.6885 ext. 
<at> yanatweets

NOTICE: As an attorney for the Wikimedia Foundation, for legal/ethical reasons I cannot give legal advice to, or serve as a lawyer for, community members, volunteers, or staff members in their personal capacity. For more on what this means, please see our legal disclaimer.
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| 17 Oct 09:37 2014

Vandalism on photographs of living people

Due to recent vandalism a new report on Commons for page patrollers
has been started at

This page shows images actively used on English Wikipedia biography
articles, where a new upload has overwritten the original by a
"newbie"* account. The report should be automatically refreshed within
15 minutes of a new image upload/overwrite of this type.

Instances of deliberate image vandalism of this type are rare, but
important to handle promptly. If you have suggestions for improvement
of this report, I would be happy to do my best to accommodate them.

* For convenience newbie accounts have been arbitrarily taken as
accounts with fewer than 200 edits on the English Wikipedia or fewer
than 100 edits on Wikimedia Commons.
* The report is maintained by Faebot and should be considered in a
draft state as it may be moved to a more 'official' location or be
taken on by more skilled bot operators.


faewik <at>

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Fabrice Florin | 16 Oct 01:33 2014

Structured Data Update | IRC chat tomorrow

Hi folks,

Here's a quick update on the Structured Data project, which proposes to make multimedia data easier to
search, view, edit, curate and re-use on Wikimedia Commons.

Today, information about media files on Wikimedia sites is stored in unstructured formats that cause a
range of issues: for example, file information is hard to search, some of it is only available in English,
and it is difficult to edit or re-use files to comply with their license terms.

Last week, a first bootcamp was held in Berlin to discuss this project and explore possible solutions,
based the same technology as the one developed for Wikidata. Participants included community
volunteers, as well as the Wikidata and Multimedia teams. This blog post gives an overview of what was
discussed and accomplished. (1)

Some good ideas came out from this event, but many questions remain unanswered. We would now like to invite
more community members to help plan next steps for this project: everyone is welcome to join the
discussion and/or subscribe to the newsletter on the new Structured data hub on Commons. (2)

We also invite you to join tomorrow's live IRC chat about Structured Data: this Thursday, October 16 at
18:00 (UTC), on #wikimedia-office (3). The development teams would love to discuss this project with you.

Going forward, our community liaison Keegan Peterzell will be managing communications for this project.
You will be hearing from him about our next discussions and other ways you can get involved in this
important initiative. 

We look forward to working with you to better support the needs of our users and modernize our multimedia
infrastructure together. 

Best regards,

Fabrice -- for the Structured Data team





Fabrice Florin
Product Manager, Multimedia
Wikimedia Foundation

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Federico Leva (Nemo | 4 Oct 21:43 2014

Panoramio is closing
«On September 16, 2014, Google announced they would be "migrating" 
Panoramio over to Google Maps. During the migration, site features such 
as comments, favorite photographers, and groups would be deleted.»

I think Panoramio, as a source of geotagged photos, is several orders of 
magnitudes bigger than us (therefore, or because, Commons is no longer 
included in Google Maps). However, there may be an occasion for outreach 
here, among the disappointed crowd.

Last hear I manually sent a few hundreds WikiLovesMonuments invites to 
Panoramio users of Italy, the response was entirely positive though 
minimal (mostly because we have so few monuments allowed). I don't know 
what pitch to use though, especially if they're looking for comments and 
groups. I remember the Flickr Pro users missed the quality photography 
discussions and learning; if there is one such community in Panoramio we 
could try to merge it into Commons' Quality images and Featured pictures 
community, à la


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