Hi everyone,
We may already be a few weeks into 2026, but it’s never too late to say Happy New Year! As we dive into the year ahead, we also want to take a moment to reflect on everything we accomplished together in the second half of 2025.
In this recap, you’ll find highlights from community campaigns, major platform updates and product launches, as well as forum and Knowledge Base data that offer a clearer picture of how the community performed. We hope this snapshot helps celebrate what went well, while also shining a light on areas where we can continue to grow together.
Let’s jump in!
Highlights
- The biggest highlight from H2 2025 was probably our first Ask a Fox event that brought contributors from both Firefox and Thunderbird together to respond to user questions in real time. Our total contributors aroused by 41.6 %, and we hit the highest weekly reply rate of the year during the event. The energy, collaboration, and collective impact of that week highlighted the power of coordinated community action, so much so that we’re now exploring ways to make it a recurring event.
- We launched the Semantic History Search campaign in September, which reaffirmed our community’s strong interest in shaping early-stage features. Contributor participation in this testing phase showed once again how eager our communities are to help shape the future of Firefox.
- The SUMO engineering team has also introduced Machine Translation (MT) for Knowledge Base articles that we first announced in August, with Italian and Spanish enabled later in September. This marked the start of a long-term effort to improve scalability and freshness of support content, particularly in core locales, where we’ve seen content freshness improve from 38% to 96%. At the same time, we recognize that this shift brought significant changes to long-established contributor workflows. We understand the rollout hasn’t been without its bumps. For many in the community, it raised concerns about quality, trust, and the role of contributors in shaping localized content. These are important conversations and we remain committed to listening carefully, learning from your feedback, and making the transition as transparent and collaborative as possible. We sincerely appreciate the patience, feedback, and ongoing dedication of everyone who has helped us navigate this complex change together.
- In October, we also helped host a Reddit AMA with Firefox leadership, and the response from the community was overwhelmingly positive. The thread generated 184 comments and 218 upvotes, making it our most engaging AMA on Reddit to date. This level of interaction reflects a strong appetite for direct and transparent conversations with users. The AMA not only created space for meaningful dialogue but also surfaced valuable insights that can inform future product decisions. Building on this momentum, we’re committed to hosting more AMAs in the future to continue strengthening that connection.
- Earlier in the year, we made the tough call to sunset Social Support and Mobile Store Support, a decision made to focus our energy and resources more intentionally on the Community Forums. While we know this transition wasn’t easy for everyone, the impact became clear by year-end: reply rates rebounded from 49.9% in H2 2024 to 62% in average (May-December 2025), a nearly 12% increase. This shift signaled that our community didn’t just adapt, but they rallied, making the forum stronger, faster, and more effective than it had been in months.
- We wrapped the year with a celebration of identity and collaboration. Kit, our charming new mascot, made its debut in November. And shortly after, we announced that Mozilla Connect officially joined forces with the SUMO team. The alignment felt natural, uniting support and feedback under one community umbrella.
Community stats
Forum Support
General stats
The forum continues to show encouraging signs of community growth and maturity. Most notably, the solve rate more than doubled, jumping by 124% to reach 11.9%. This is a clear signal that contributors are not only engaging with users, but successfully resolving their issues at a much higher rate. We also saw a 9.8% increase in OP reply rate, suggesting stronger two-way engagement between users and contributors.
Improvements in speed reinforce this trend: first response time dropped by nearly 30%, while time to resolution was cut in half, falling by 48.9%. Combined with a 12.7% rise in reply rate and 15.7% more threads being actively supported, these results point to a community that’s not just growing, but becoming more efficient, responsive, and impactful.
With the automatic spam moderation introduced in the first half of year, we’ve seen fewer total questions coming in H2 2025 but higher quality interactions overall. This shift suggests a more focused and intentional support environment. Taken together, these trends suggest that it’s time to elevate solve rate from a “nice to have” to a core success metric, a meaningful reflection of contributor expertise, community trust, and the maturity of our Community Forums.
| Total valid questions | 14803 (-20%) |
| Reply rate | 63.5 (+12.67%) |
| Solve rate | 11.9% (+124%) |
| Total responses posted | 14191 (+20.4%) |
| Total threads interacted | 9599 (+15.7%) |
| Average first response time (in hour) | 22.4 (-29.8%) |
| Average time to resolution (in day) | 2.55 (-48.9%) |
| Total new registration | 455k (+0.5%) |
| Total contributors | 963 (-1.3%) |
| Helpful rate | 60.8% (+3.92%) |
| OP reply rate | 27% (+9.8%) |
Top forum contributors
All credit for this impressive performance goes to our incredible forum community, who continue to raise the bar with each quarter. Their dedication, consistency, and responsiveness are what make these results possible.
We’re proud to highlight the top 3 contributors on the English forum, along with the leading contributors across other locales. This shows a true reflection of the global impact of our support network.
| Contributor name | Total responses | Total threads engaged |
| Paul (en-US) | 1900 | 1395 |
| Denyshon (en-US) | 1284 | 924 |
| Jefferson Scher (en-US) | 930 | 871 |
| @next (it) | 557 | 438 |
| Gerardo (es) | 523 | 457 |
| Mark Heijl (nl) | 186 | 155 |
| Selim (tr) | 126 | 87 |
| Ansamb (cs) | 87 | 65 |
| Poljos-moz (cs) | 81 | 59 |
| Sandromonteiro (pt-BR) | 15 | 15 |
| Balázs Meskó (hu) | 51 | 48 |
| Vexi (sl) | 5 | 5 |
Emerging forum contributors
| Contributor name | Total responses | Total threads engaged |
| George Kitsoukakis | 202 | 171 |
| Mark | 136 | 110 |
| sjohnn | 65 | 45 |
| t.r.ernst | 64 | 60 |
| Jeff-g | 61 | 54 |
Knowledge Base
General stats
We’ve seen an impressive uptick in article contributions in the second half of 2025, with 925 revisions submitted to the English Knowledge Base, a 21.9% increase compared to the previous period. This continued growth reflects not just dedication, but real momentum of the growing spirit to keep our Knowledge Base fresh and helpful for users worldwide.
This level of participation directly supports our broader direction towards improving and streamlining the content request workflow. As we continue investing in clearer processes and better documentation, it’s clear that contributors are willing to step up when the pathway to impact is well defined.
| Total en-US revisions | 925 (+21.9%) |
| Total articles | 248 (+2.9%) |
| Total revisions reviewed | 821 (+19.9%) |
| Total revisions approved | 778 (+17.7%) |
| Total authors | 97 |
| Total reviewers | 19 (+11.8%) |
Top KB contributors
The numbers may show progress, but the real story is the people behind them. Behind these revisions, 97 unique contributors stepped in to create the updates and 19 reviewers helped guide their contributions. And here’s just a glimpse of the top 5 contributors:
| Contributor name | Total revisions | Total articles | Total reviews |
| AliceWyman | 467 | 246 | 334 |
| Pierre Mozinet | 125 | 100 | – |
| Mark Heijl | 101 | 88 | – |
| Michele Rodaro | 50 | 46 | 35 |
| Paul | 26 | 21 | 5 |
Article Localization
The localization community delivered an outstanding performance in H2 2025, despite undergoing significant changes. We saw 4807 non-English revisions submitted, a 37.5% increase, covering 2664 articles across locales (+29.7%). In total, 4,259 revisions were approved and 4,296 reviewed, reflecting consistent contributor dedication to quality and accuracy. Most notably, 314 unique contributors stepped up to author content, representing a 54.7% increase from earlier this year.
These results are especially meaningful given the rollout of Machine Translation in August, a major shift in localization workflow that understandably sparked concern and discussion across the community. Adjusting to MT required both flexibility and trust, and we’re grateful that many contributors responded by showing up in full force. Your continued involvement ensured that translations remained thoughtful, context-aware, and aligned with Mozilla’s values of openness and quality. This success is a testament to the strength, resilience, and care of our contributor base, and we’re deeply grateful for your ongoing contribution.
General stats (minus sumoBot)
| Total non en-US revisions | 4807 (+37.5%) |
| Total articles | 2664 (+29.7%) |
| Total revisions reviewed | 4296 (+33.5%) |
| Total revisions approved | 4259 (+33.6%) |
| Total authors | 314 (+54.7%) |
| Total reviewers | 45 (-6%) |
Top localization contributors
| Contributor name | Total revisions | Total articles | Total reviews |
| Michele Rodaro (it) | 819 | 393 | 801 |
| Jim Spentzos (el) | 727 | 566 | 555 |
| Valery Ledovskoy (ru) | 627 | 400 | 635 |
| Mark Heijl (nl) | 575 | 359 | – |
| Milupo (dsb & hsb) | 460 | 224 | 330 |
Emerging localization contributors
| Contributor name | Total revisions | Total articles |
| 普莱是袋熊 (zh-CN) | 35 | 31 |
| Zhengyang3552 (zh-CN) | 22 | 21 |
| xanhAD (vi) | 13 | 11 |
Stay connected with the community
Join the Conversation
- Participate in ongoing discussions on the Contributor Forum to catch up on the latest updates and share your input.
- Drop by our Matrix channel for more casual chats with fellow contributors.
Attend Our Monthly Community Call
- Every month, we host a community call to share updates about Firefox and community activities. Watch past recordings from 2026!
- Don’t hesitate to join the call in person if you can. We try our best to provide a safe space for everyone to contribute. Don’t feel pressured to turn on your camera or speak if you’re not comfortable. You can also:
- Submit your questions ahead of time via the Contributor Forum or Matrix
- Lurk silently and absorb the updates—your presence is still valued!
Stay Informed
- Follow the SUMO Blog for the latest community news and updates.
- Subscribe to the Mozilla Community Newsletter to see what’s happening across the wider Mozilla ecosystem.
- Sign up for the Firefox Daily Digest (Mon–Fri) for curated Firefox news and updates from around the web.
Explore What We’re Building
- Curious about what the platform team is working on? Visit the SUMO Engineering Board to see what the platform team is cooking in the engine room.
You can also view our latest release notes to stay informed about recent changes and improvements.