Wikimedia Foundation’s cover photo
Wikimedia Foundation

Wikimedia Foundation

Software Development

San Francisco, CA 116,087 followers

Imagine a world in which every single human being can freely share in the sum of all knowledge.

About us

We are the nonprofit organization that operates Wikipedia and the other Wikimedia free knowledge projects. We host a technology infrastructure that makes possible billions of monthly visits to Wikipedia. Since 2003, we have supported the hundreds of thousands of volunteer editors who edit, expand, and curate the Wikimedia projects. We equip these volunteers with the most up-to-date tools, ensure connections to Wikipedia are fast, safe, and private, and develop new technology and products to meet the demands of our readers and editors. We provide individuals and organizations around the world with funding to increase the knowledge on Wikipedia. We also undertake legal and advocacy efforts to protect people’s right to free knowledge. We are a charitable, not-for-profit organization that relies on donations. We receive donations from millions of individuals around the world, with an average donation of about $11. We also receive donations through institutional grants and gifts. We are a United States 501(c)(3) tax-exempt organization with offices in San Francisco, California.

Website
https://wikimediafoundation.org
Industry
Software Development
Company size
501-1,000 employees
Headquarters
San Francisco, CA
Type
Nonprofit
Founded
2003
Specialties
Non-Profit, Free knowledge, Internet, Technology, Mobile, Open Source, Education, and Wikipedia

Locations

Employees at Wikimedia Foundation

Updates

  • You don't need to see the logo to know you’re on Wikipedia. The blue link, white page, and puzzle globe are beautifully simple, yet easily recognizable. Over the past 25 years, Wikipedia has built a visual identity that is unique and unlike any other corner of the internet. From a 25-year-old interface to puzzle-globe and community-made designs, Wikipedia has built a visual identity that is unique and unlike any other corner of the internet. Since its launch in 2001, Wikipedia has largely resisted the visual trends of the internet and attention economy. The free encyclopedia has remained minimal, data-first, and accessible. Even its latest major redesign, Vector 2022, was deliberately subtle, prioritizing consistency and trust. It's Nice That explores over two decades of Wikipedia's visual evolution, from its familiar interface to the creative ways our global community of contributors has shaped the looks. Behind the simplicity is a quarter-century of experimentation, community creativity, and a design language shaped by free knowledge. Go beyond Baby Globe and the Wikipede ➡️ https://lnkd.in/dpB8jW7P

    • A picture of the Baby Globe plushie taken during Wikimania 2026 in Paris. Text reads: Who designs Wikipedia? It's Nice That explores 25 years of visual evolution, from its iconic puzzle globe to a growing
world of community-driven design.
  • Wikipedia is one of the best examples of what people can do when they work together towards a common mission. For more than 25 years, hundreds of thousands of volunteer editors have built one of the internet’s largest bodies of human-created knowledge. Now, as AI changes how people access and consume that knowledge, Selena Deckelmann, Chief Product and Technology Officer at the Wikimedia Foundation, is helping shape what comes next. Selena's work increasingly focuses on ensuring that AI is grounded in collective human knowledge, rather than shaped by a small number of powerful actors. Her team is exploring new ways to protect what makes Wikipedia human while strengthening the systems that allow people to share knowledge at a global scale. For this work, Selena has been recognized as one of TIME 's 2026 Executives of the Year. Read more ➡️ https://lnkd.in/dZBmMNzS

    • A focus picture of the Wikimedia Foundation CPTO Selena Deckelmann. Text reads: "Who gets to shape the knowledge AI learns from? Selena Deckelmann, named one of TIME's 2026 Executives of the Year, is helping keep human collaboration at the heart of Wikipedia's future"
  • Wikimedia Foundation reposted this

    View organization page for ADWEEK

    1,469,368 followers

    Wikipedia has spent 25 years building a reputation as one of the most trusted sources on the web. Now, as answer engines rewrite how people find information online, that reputation faces a threat familiar to many publishers: ubiquity without credit. In this week's On Background, Mark Stenberg speaks with Zack McCune, the global head of brand marketing at the Wikimedia Foundation, about how the organization is responding to these threats.

  • Knowledge equity takes the global stage. The 81st United Nations General Assembly opens its high-level General Debate on 22 September, bringing world leaders and decision-makers together in New York. As advocates for knowledge equity, the Wikimedia Foundation will be part of the conversation, bringing the perspective of open knowledge to discussions about our shared future. Throughout the General Assembly, we’ll connect with policymakers and leaders to highlight why access to reliable, freely available knowledge – built and maintained by humans – matters now more than ever. From informed participation to equitable representation, access to knowledge helps people understand the issues shaping their lives and have a voice in the conversations around them. Follow along as the Wikimedia Foundation Policy team brings the case for knowledge equity to the halls of the United Nations.

  • Peace goes beyond a concept. It comes alive through communities working together to build a more equitable world. Starting on 21 September, the Wiki Loves Peace international photo campaign invites you to document peace-related heritage, monuments, museums, public art, and peacebuilding initiatives in your neighborhood. By joining the competition, you can also help strengthen the free knowledge movement and Wikimedia Commons. Organized by the Wikimedian-in-Residence at the United Nations Office for Disarmament Affairs (UNODA) under the Wiki4Disarmament project, the campaign will go on until 30 October, the end of UN Disarmament Week. Join in the next steps for peacebuilding ➡️ https://w.wiki/Nboa

    • A photo of the Hiroshima Peace Memorial under a bright blue sky. Text reads: What does peace look like? Supported by the United Nations, the Wiki Loves Peace photo campaign documents initiatives, places, and stories around the world.
  • Wikimedia Foundation reposted this

    What does digital sovereignty mean in an open world? Where do open collaboration and digital sovereignty align? And where do they pull apart? 💻🤝🌐 Next Monday, September 21, "OPEN @ UNGA 81: A Conversation on Collaboration" will bring together leading voices from open source, digital rights, and digital sovereignty for a day of conversation on how the two intersect. Discussions will examine where open practices are complementary, where tensions emerge, and how these questions vary across the open stack—from infrastructure and hardware to software and data. Register now and join us! https://lnkd.in/gnGEm44e (Space is limited; please register before Thursday, 17 September at 4PM EDT) 🗓️ Date: Monday, 21 September 2026 ⏰ Time: 10AM–3PM EDT (doors open at 9:30AM) 📍 Location: NYU Engelberg Center, Lipton Hall at D’Agostine Hall (108 West 3rd Street, New York, NY 10012) 💡 Jan Gerlach, Public Policy Director at the Wikimedia Foundation, will speak at the "Open Infrastructure" panel, which starts at 11:25AM. #opensource #UNGA81 #openknowledge

    • An image providing details about the "OPEN @ UNGA 81: A Conversation on Collaboration" event, which will bring together leading voices in open source, digital rights, and digital sovereignty for a day of conversation on the margins of UNGA 81. The event takes place Monday, 21 September 2026, from 10:00AM to 3:00PM EDT, with doors opening at 9:30AM at NYU Engelberg Center, Lipton Hall at D’Agostine Hall, on 108 West 3rd Street, New York, NY 10012. The image explains that space is limited, so registering soon is important.
    • An image with details about a panel, "Open Infrastructure," where Jan Gerlach (Public Policy Director at Global Advocacy, Wikimedia Foundation) will be a speaker. The panel will be held at 11:25AM during the "Open @ UNGA 81" event.
  • Some Wikimedia journeys begin with simple curiosity, but grow into a lifelong commitment to our movement. Juan “BugWarp” Kulichevsky began his journey in an unusual way. Inspired after a donation to Wikipedia, Juan decided the “coolest thing” he could do was to create an account of his own at only 10 years old. “Little did I know that this would be the start of something great”. Today, much of his work focuses on sports photography and improving the visual representation of athletes across Wikimedia projects. Beyond editing, photography, and contacting athletes to share photos from the Olympics, Juan has also played an active role within Wikimedia Argentina, serving as a board member. The joy of contributing to the free knowledge movement continues to inspire him: “I love going out on the streets with my camera and taking pictures for things that normally I wouldn’t have appreciated or even paid attention to”. Celebrate User:BugWarp ➡️ https://w.wiki/UXCV

    • A picture depicting Wikimedian Juan Kulichevsky. Text reads: The Wikimedian who reached out to Olympic athletes to improve Commons. User:BugWarp has contributed to Wikimedia projects since he was 10 years old."
  • You don't have to become a Wikipedia expert on day one. Wikipedia's maintenance page is organized by experience level, so you can choose a place to start that matches your skills and confidence. Whether you're making your first typo fix, improving citations, tackling article cleanup, or taking on more advanced maintenance, there's an entry point for you. Find the maintenance path that's right for you ➡️ https://w.wiki/4Lvc

    • Johannes Vermeer' The Art of Painting. Text reads: Not ready to start your editing journey yet? Not a problem!
    • Johannes Vermeer' The Art of Painting, but blurred. Text reads: Fix small issues. Correct typos, grammar, formatting, or outdated info. Improve references. Add sources, check citations, and strengthen trust. No more “citation needed”. Welcome new editors. Help curious people learn how Wikipedia works.

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