Information Density: Wikimedia Foundation – Signal Evidence & AI Readability

[H2] We support protect fund openhuman knowledge
We are the nonprofit that hosts Wikipedia. We support the people, technology, and policies that enable reliable information to be shared with the world.
Help us support everyone’s access to reliable information. Why donate?
[H2] Learn something new every day with the Wikipedia app
The reading challenge is a fun and easy way to expand your knowledge and explore new topics on the go.
Read more
[H2] Celebrate Wikipedia’s 25th birthday
Mark this milestone by paying tribute to the hundreds of thousands of people that edit, write, and fact check the backbone of knowledge on the internet.
Join the party
[H2] By the numbers
Wikipedia is the backbone of the internet’s knowledge. From students to chatbots, everyone learns from it.
Wikipedia receives nearly
15 billion
views each month.
The Wikimedia Foundation supports nearly
265,000
volunteers every month.
Every minute
324
new edits are made to Wikipedia.
With over 65 million articles, in 300+ languages, Wikipedia is the home of trusted information online.
Wikipedia is the only website among the top 10 most visited that is hosted by a nonprofit organization.
[H2] Our work
Read more about how we are supporting the people, policies, and products that make Wikipedia and Wikimedia projects possible.
Our projects
[H4] Want to learn more? Download the Wikipedia app
Wikimedia Foundation
[H4] Wikimedia Foundation joins Digital Public Goods Alliance to champion open knowledge infrastructure
Community
[H4] The winners of the 2025 Wiki Loves Monuments photo contest
Community
[H4] “Cinematic intensity”: The winners of Wiki Loves Earth 2025
Our projects
[H4] ICFJ and Wikimedia Foundation Seek Applications for Open the Knowledge Journalism Awards in Africa
Our projects
[H4] Wikipedia celebrates 25 years of knowledge at its best
Wikimedia Foundation
[H4] Wikimedia Foundation Welcomes Two New Board Trustees
Wikimedia Foundation
[H4] Wikimedia Foundation appoints Bernadette Meehan as Chief Executive Officer
Our projects
[H4] Announcing Wikipedia’s top 25 most-read articles of 2025
[H2] Built for people, by people
Wikipedia is built by nearly 250,000 volunteers from all kinds of backgrounds. They edit articles, check facts, fix code, and help make the internet’s knowledge better. Meet some of them.

[H3] Taufik Rosman
Malaysia
The 2023 Wikimedian of the Year, Taufik has been editing since he was 8 years old. He has expanded the Malay Wiktionary with nearly 11,000 changes. “Each of our contributions matters greatly,” Taufik says.
[H3] Siobhan Leachman
New Zealand
Siobhan expands English Wikipedia with knowledge about notable women in biodiversity and natural history. Thanks to her, Wikipedia has information about all of New Zealand’s 1,800 endemic moth species.
[H3] Armine Aghayan-Flisch
Switzerland
Writing a Wikipedia article each day for a hundred straight days is a feat. Arminé has done it thirteen times on the Armenian Wikipedia, while also uploading over 20,000 open-licensed images.
[H3] Donatien Kangah
Côte d’Ivoire
The most visible part of Donatien’s French Wikipedia work is in the site’s coverage of African football. But behind the scenes, Danatien also runs an organization that expands Wikipedia’s knowledge of Côte d’Ivoire.
[H3] Wilfredo Rodríguez
Canada
Prolific photographer Wilfredo has shared over 50,000 images with Wikimedia projects. Many come from his home country of Venezuela to preserve its beauty for the world’s benefit.
[H3] Ellie Méndez
El Salvador
Ellie has collaborated with multiple El Salvadorean cultural institutions to expand Wikipedia’s coverage of women’s sports in Spanish and train people in updating the site.
[H3] Mónica Paola Bonilla-Parra
Colombia
As the head of Wikimedia Colombia, Mónica works to encourage people to share knowledge on Wikipedia. “There are no limits to participating and contributing,” she says. “If you don’t do it, who will?”
[H3] Alberto Leoncio
Brazil
Most work on Wikipedia happens behind the scenes and is performed by volunteers like Alberto. The time Alberto spends on technical tasks makes life easier for all other Portuguese Wikipedia editors.
[H3] Alaa Najjar
MENA region
Alaa’s nearly 600,000 edits on Wikimedia projects have expanded the sites’ knowledge of medicine, anatomy, and biology. In thanks, he received the prestigious 2021 Wikimedian of the Year award.
[H3] Nkem Osuigwe
Nigeria
Nkem is a connector: she brings volunteer Wikimedia editors and librarians from Africa together. Her work in organizing the first African Librarians Week generated nearly 28,000 improvements on Wikipedia.
[H3] Ananya Mondal
India
A clinical nutritionist by trade, Ananya singlehandedly spearheaded an initiative to upload more images of butterflies onto Wikimedia projects. She’s since inspired people to upload over 15,000 new photos.
[H3] Netha Hussain
Sweden
Netha uses her expertise as a doctor to ensure medical content on Wikipedia is accurate, well-sourced, and easily understood—from COVID-19 content during the pandemic to documenting misinformation around women’s health.
[H3] Rosie Stephenson-Goodknight
United States
Rosie co-founded the Women in Red project, which is spearheading an effort to increase Wikipedia’s biographies about women in English. So far, they’ve added over 200,000 articles.
[H3] Andrew Lih
United States
Long-time Wikipedian Andrew wrote The Wikipedia Revolution, a foundational book on the history of Wikipedia. Over the last two decades, he’s made over 760,000 improvements across Wikimedia projects.

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[H2] Help expandhuman knowledge
There are many different ways for you to support us. Here are some ideas for putting your skills and passions to use:
[H2] Donate
Join the readers who help fund Wikipedia
[H2] Edit
Join the community that builds Wikipedia
[H2] Participate
From coding to photography to organizing events, contribute your skills to advance free knowledge
[H2] Advocate
Help us protect everyone’s right to knowledge
[H2] Subscribe for news
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For more details, see our Privacy statement.

[H2] Photo credits

Wikipedia 25 Reading Challenge - Blog header
Wikimedia Foundation

CC BY-SA 4.0

LIS SidebarPicture
File provided by Wikimedia Commons

Diliff, University of Texas at Arlington Photograph Collection, 钉钉, Ninaras

CC BY-SA 4.0

دماوند و دیر گلین
File provided by Wikimedia Commons

Hossein pourakbarian

CC BY-SA 4.0

Bothrops bilineatus PN Carrasco
File provided by Wikimedia Commons

Edunavia1

CC BY-SA 4.0

Open the Knowledge Journalism Awards - Exteded
ICFJ

Wikipedia 25 - Birthday blog header
Wikimedia Foundation

CC BY-SA 4.0

Bobby Shabangu and Michał Buczyński
JPC Photography and Jason Krüger for Wikimedia

Meehan-12032025CK 0312
File provided by Wikimedia Commons

ChuckDC62

CC0 1.0

2025 Wikipedia most read articles - Header 2
Wikimedia Foundation

CC BY-SA 4.0

Baby Globe standing scroll
Original by BaduFerreira, adaptation by Sharon Park, Axel Kinnear and Bex McNally for the Wikimedia Foundation

CC BY-SA 4.0

Wiki Globe illustration
Wikimedia Foundation

CC BY-SA 4.0

Wiki friendship illustration
Wikimedia Foundation

CC BY-SA 4.0

Wiki collaboration illustration
Wikimedia Foundation

CC BY-SA 4.0

Wiki world illustration
Wikimedia Foundation

CC BY-SA 4.0

Wiki Mobile Illustration
Wikimedia Foundation

CC BY-SA 4.0

WikiSG Headshots Taufik
File provided by Wikimedia Commons

Don Wong for Tiny Big Picture, commissioned by The Wikimedia Foundation

CC BY-SA 4.0

Siobhan Leachman at BioBlitzWBN 1
File provided by Wikimedia Commons

Mike Dickison

CC0 1.0

Armine Aghayan-Flisch
File provided by Wikimedia Commons

Pdproject

CC BY-SA 4.0

Le Burex de WikiCiv
File provided by Wikimedia Commons

Abiba Pauline

CC BY-SA 4.0

The Photographer User in Humboldt Peak
File provided by Wikimedia Commons

Wilfredor

CC0 1.0

Equipo de Wikipedistas en El Salvador
File provided by Wikimedia Commons

Karlalhdz

CC BY-SA 4.0

Monica Bonilla
File provided by Wikimedia Commons

Monica Bonilla (WMCO)

CC BY-SA 4.0

Wikisource Conference 2025, Day 3, Denpasar; February 2025 (086)
File provided by Wikimedia Commons

Memora Productions for Wikimedia Indonesia

CC BY-SA 4.0

Wikiar2022 0034 (cropped)
File provided by Wikimedia Commons

Tamuz Hasan

CC BY-SA 4.0

Nkem Osuigwe 3
File provided by Wikimedia Commons

AfricanLibrarian

CC BY-SA 4.0

Ananya Mondal - WLM
File provided by Wikimedia Commons

Sumitsurai

CC BY-SA 4.0

Netha Hussain-070A3987
File provided by Wikimedia Commons

Bijay Chaurasia

CC BY-SA 4.0

Rosie at Wikimania 2023 6
File provided by Wikimedia Commons

Mrb Rafi

CC BY-SA 4.0

Andrew Lih
File provided by Wikimedia Commons

Joi Ito

CC BY 2.0

[H1] Donate to the Wikimedia Foundation
[H3] Wikipedia is the world’s largest encyclopedia — and it’s yours! Every donation helps keep Wikipedia free and open for people across the globe.
Only 2% of Wikipedia readers give, so your donation really counts.
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[H2] Ways to give
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[H3] Endowment gift
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[H3] Visit the Wikipedia store
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[H2] Already a donor?
Thank you for your generous support. It really makes a difference. For information on how to manage your recurring donation, please click below, or contact donate@wikimedia.org.
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[H2] What your donation makes possible
Wikipedia is not funded through advertising, and we don’t sell your data for profit. Instead, we rely on donors — people who find value in the free knowledge and resources we provide. This means Wikipedia remains neutral, trusted, and free from commercial interests. Watch our video to learn more.
[H2] Where your donation goes
Accountability and transparency are core values at the Wikimedia Foundation. We manage funds and resources to ensure that every contribution supports our mission. We have earned the Platinum Seal of Transparency from Candid (formerly GuideStar), and Charity Navigator awarded us its highest rating. You can read our most recent annual report for more information about our financial health.

[H3] Investment in Technology 45%
Nearly half of our budget goes toward supporting the technology that powers Wikipedia and other Wikimedia projects. We are constantly working to enhance the user experience for both contributors and readers, improve site security, and ensure reliable access to our websites globally. This infrastructure and product support sustain one of the top ten most visited websites in the world, all at a fraction of the cost of popular for-profit websites.
[H3] Support for Volunteers 32%
The global reach of Wikimedia projects is made possible by the hard work of volunteers from across the globe. We provide grants, legal support, and other resources to help build vibrant volunteer communities. Additionally, we promote community engagement through outreach initiatives and advocate for the growth and protection of free knowledge.
[H3] General and Administrative Expenses 11%
Operational costs are essential for the smooth management and governance of the Wikimedia Foundation. These expenses help us recruit top talent and support staff around the world, empowering them to carry out the mission of the Wikimedia Foundation.
[H3] Allocation to Fundraising Efforts 12%
Donor support is crucial to sustaining Wikipedia and our other free knowledge endeavors. Our team is committed to efficient and effective fundraising throughout the year, ensuring that every contribution helps advance our mission.
[H2] Thank you
We appreciate each and every person who chooses to become a Wikimedia Foundation donor! You are the key to making this important work possible. Thank you. We also offer a special acknowledgement to our Benefactors — people who give $1,000 or more. We proudly list our Benefactors here.
“Thank you for your thoughtful approach to technology and for ensuring that people remain at the heart of Wikipedia’s mission.”
Donor
● United States of America
“It is an honour to be able to contribute to Wikipedia, which I always try to refer to as the eighth wonder of the world.”
Donor
● The Netherlands
“[Wikipedia is] one of the last bastions of free, open and collaborative internet. Keep up the good fight!”
Donor
● Brazil
“I believe that open knowledge is the foundation of true progress, and platforms like Wikipedia don’t just inform us — they empower us. That belief will stay with me forever.”
Donor
● United Kingdom
“Free knowledge for all should be our main treasure as a society… Thank you for a project that will transcend generations.”
Donor
● Colombia
[H2] Still have questions?
Please find answers to our most frequently asked questions below. If you’re unable to find what you are looking for there, you can browse our general FAQs, or get in touch using donate@wikimedia.org.
[H3] Are my donations tax deductible?
The Wikimedia Foundation has 501(c)(3) tax exempt status in the United States. Our tax-exempt status varies according to the laws of each country. Donations to the Wikimedia Foundation are likely not tax-deductible outside the USA. Please see our tax deductibility page for more details.
[H3] What is your donor privacy policy?
We are committed to protecting the privacy rights of our supporters and will never sell, trade, or rent your nonpublic personal information. Please see our Donor privacy policy for full details.
[H3] How secure is an online donation?
The Wikimedia Foundation donation pages are extremely secure and powered by GlobalSign. After clicking on a fundraising banner or following a donation link, the page you’re taken to is on a secured site (https); all information is encrypted and handled following the highest standard of data protection.
We would also like you to know that we neither process nor store credit card details or bank information. Instead, we work closely with third party payment processors affiliated with banks to process donations. Please also note that when you transfer to a partner site – if you are donating via Apple Pay, Google Pay, or PayPal, for example – we do not store your login credentials and the full donation process is done from your account on their secure site.
[H3] How can I update my recurring gift?
To update your donation amount, frequency or payment method, or to cancel, please contact our donor relations team at donate@wikimedia.org and include the following:
The type of change you would like to make to your donation;
The email address that was used when the donation was made;
The full name used; and
The amount and currency of the donation.
You will receive an email confirmation when the change is completed. Please do not include your credit card number or any other financial information when contacting us.
View all frequently asked questions
[H2] Don’t just take our word for it
Accountability and transparency are core values at the Wikimedia Foundation. We have earned the Platinum Seal of Transparency from Candid (Formerly Guidestar), and Charity Navigator has awarded us its highest rating of four stars.

[H2] Photo credits

Wikipedia 25 Reading Challenge - Blog header
Wikimedia Foundation

CC BY-SA 4.0

LIS SidebarPicture
File provided by Wikimedia Commons

Diliff, University of Texas at Arlington Photograph Collection, 钉钉, Ninaras

CC BY-SA 4.0

دماوند و دیر گلین
File provided by Wikimedia Commons

Hossein pourakbarian

CC BY-SA 4.0

adapted-symbol-friendship
Wikimedia Foundation

CC BY-SA 4.0

T-shirt brand graphic - Wikimedia Foundation
File provided by Wikimedia Commons

Wikipedia 20 symbols by Jasmina El Bouamraoui and Karabo Poppy Moletsane

CC0 1.0

[H3]
Want to learn more? Download the Wikipedia app

Our projects

Add to your knowledge every day to earn a prize and bragging rights with a new Reading Challenge, featuring Baby Globe, Wikipedia’s 25th birthday mascot.

19 May 2026

By Wikimedia Foundation
Read more

[H3]
ICFJ and Wikimedia Foundation Seek Applications for Open the Knowledge Journalism Awards in Africa

Our projects

From February 2 to March 1, 2026 African journalists can self nominate stories that help expand knowledge about Africa on Wikipedia.

2 February 2026

By Wikimedia Foundation
Read more

[H3]
Wikipedia celebrates 25 years of knowledge at its best

Our projects

New video docuseries celebrates the humans who make knowledge on Wikipedia possible; new tech partnerships highlight Wikipedia's value in age of AI.

15 January 2026

By Wikimedia Foundation
Read more

[H3]
Announcing Wikipedia’s top 25 most-read articles of 2025

Our projects

New Wikipedia data shows the events, people, movies, and more that captured global attention in 2025.

2 December 2025

By Wikimedia Foundation
Read more

[H3]
How is Wikipedia funded?

Our projects

For over almost 25 years, Wikipedia has grown to become the backbone of knowledge on the internet. What started as a wildly ambitious and probably impossible dream is now an essential knowledge resource for humanity.

26 November 2025

By Wikimedia Foundation
Read more

[H3]
In the AI era, Wikipedia has never been more valuable

Our projects

AI relies on human-documented knowledge resources like Wikipedia.

10 November 2025

By Wikimedia Foundation
Read more

[H3]
New user trends on Wikipedia

Our projects

In March, the Wikimedia Foundation shared about the global trends that are impacting our movement. These trends have continued to shape not only the Wikimedia projects, but the broader internet across the globe. Included in these trends is how companies are heavily using Wikipedia content to back new AI experiences. In April, we described how bots and….

17 October 2025

By Marshall Miller
Read more

[H3]
Wikimedia Foundation responds to questions about how Wikipedia works

Our projects

The Wikimedia Foundation, the nonprofit that hosts Wikipedia, continues to welcome opportunities to explain more about Wikipedia’s oversight and mechanisms to keep information safe, whether these questions come from governments, organizations, the press, or users.

10 October 2025

By Wikimedia Foundation
Read more

[H3]
Announcing English Wikipedia’s most popular articles of 2024

Our projects

Politics, sports, and movies: The 25 most-read English Wikipedia articles in 2024.

3 December 2024

By Wikimedia Foundation
Read more

[H3]
Announcing Wikipedia’s most popular articles of 2023

Our projects

From ChatGPT and Cricket to Barbie and Bollywood, these are the 25 most read articles on English Wikipedia this year.

5 December 2023

By Wikimedia Foundation
Read more

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[H1] Participate
[H3] Learn something new. Contribute what you know.
[IMG: Wikimania 2014 at the Barbican in London]
Wikimedia projects are made by volunteers. Like you.
Editors contribute new articles and improve current articles. Developers write and debug the code that makes the wikis go. Galleries, libraries, archives, and museums share their collections and expertise. All of us have knowledge to share. Here’s how to join our global community.
[H2] Get involved as a Wikipedia editor
No previous experience is needed to start editing Wikipedia. Visit the Teahouse for a friendly place to learn about editing. Veteran editors answer questions and help new editors become accustomed to Wikipedia culture.
[H2] Join an event or online community
Edit-a-thons and WikiProjects bring people with similar interests together to create and improve Wikipedia articles around a common theme. There are frequent workshops to train new editors.
[H2] Find your local Wikimedia community
There are 185 active Wikimedia affiliates around the world. Each supports Wikimedia projects within a geographical region or thematic area. Find yours.
[H2] Contribute your coding skills
Our global technical community welcomes volunteer developers of all levels. We host hundreds of software projects in many different domains. It’s easy to get involved.
[H2] Galleries, libraries, archives and museums
Wikimedia projects offer GLAMs and other institutions a powerful platform to share digital collections, institutional knowledge, and expertise with the public.Share your institution’s knowledge
185
active Wikimedia affiliates around the world
300+
languages represented across all Wikipedias

[H2]
See what we have been up to

[H3]
The winners of the 2025 Wiki Loves Monuments photo contest

Community

Now on its 16th edition, Wiki Loves Monuments still retains its crown as the world’s largest photo contest. Each year since 2010, photographers from around the globe have come together to celebrate cultural heritage through their camera lens—and donate it all to benefit Wikimedia’s freely shared knowledge.  Despite Wiki Loves Monuments’ size and scope, it….

29 April 2026

By Wikimedia Foundation
Read more

[H3]
“Cinematic intensity”: The winners of Wiki Loves Earth 2025

Community

If you just had a quick glance at the above image, you might think it was a screenshot from the latest hit show or nature documentary. But no—it’s one of the winners of this year’s Wiki Loves Earth photo contest. For more than a decade, this volunteer-organized competition has been capturing the breathtaking essence of….

2 March 2026

By Wikimedia Foundation
Read more
[H2] Subscribe for news
Get the latest updates about the Wikimedia Foundation directly to your inbox.

For more details, see our Privacy statement.

[H2] Photo credits

Wikipedia 25 Reading Challenge - Blog header
Wikimedia Foundation

CC BY-SA 4.0

LIS SidebarPicture
File provided by Wikimedia Commons

Diliff, University of Texas at Arlington Photograph Collection, 钉钉, Ninaras

CC BY-SA 4.0

دماوند و دیر گلین
File provided by Wikimedia Commons

Hossein pourakbarian

CC BY-SA 4.0

Bothrops bilineatus PN Carrasco
File provided by Wikimedia Commons

Edunavia1

CC BY-SA 4.0

[IMG: Wikimania 2014 at the Barbican in London]

Wikimania 2014 London
File provided by Wikimedia Commons

Sebastiaan ter Burg

CC BY 2.0

[IMG: Edit-a-thon and Photobooth at The High Line New York 2018]

Black Lunch Table High Line 2018 05
File provided by Wikimedia Commons

Heathart

CC BY-SA 4.0

[IMG: 2019 Art+Feminism Edit-a-thon]

2019 Art+Feminism Edit-a-thon DC 008
File provided by Wikimedia Commons

Geraldshields11

CC BY-SA 4.0

[IMG: Volunteers at Wikimedia Conference 2017]

Wikimedia Conference 2017 – 149
File provided by Wikimedia Commons

Jason Krüger for Wikimedia Deutschland e.V.

CC BY-SA 4.0

[IMG: Computer screen]

Macro laptop coding (Unsplash)
File provided by Wikimedia Commons

Marc Mueller

CC0 1.0

[IMG: The reading room at the Boston Public Library]

Boston Public Library Reading Room
File provided by Wikimedia Commons

Tony Webster

CC BY 2.0