Collabora Productivity at FOSDEM 2023

FOSDEM 2023 – Back in Brussels

FOSDEM 2023 is back home in Brussels. Meet the Collabora Productivity team at Europe’s largest gathering of open-source developers and have a chat, some fries or a beer with us (also: make sure to grab some stickers!). As usual, our engineers will be giving talks about the latest developments in Collabora Online, Collabora Office and LibreOffice at the LibreOffice Technology devroom. Here’s the schedule!

Saturday, February 4th 2023

Collabora at the LibreOffice Technology devroom


Noel Grandin

16:10 – LibreOffice Technology devroom See details

Turbocharging an Elephant – Making LibreOffice Faster

Most of the easy tasks are already done. This talk covers several improvements to LibreOffice, that required lots of preparational work and interesting challenges to introduce improvements into a massive (and messy) codebase.


Pranam Lashkari

16:20 – LibreOffice Technology devroom See details

Feature Locking and Feature Restriction – Integrator’s Way to Unlock Potential

In the talk, Pranam Lashkari will explain and demonstrate how feature locking and restrictions work in Collabora Online. Using such methods, integrators can control which features to deliver to which user or group.


Sarper Akdemir

16:30 – LibreOffice Technology devroom See details

An Interoperability Improvement in LibreOffice Impress Tables

Sarper Akdemir tells the story of an interoperability bug fixing adventure where the problem turned out to be deeper than it appeared at first glance, showcasing how there are multiple approaches to a single interoperability problem.


Miklos Vajna

16:40 – LibreOffice Technology devroom See details

Writer Content Controls – What Happened in the Past Half Year

LibreOffice was capable of handling form filling in Writer for a while already. In the meantime, the competition introduced Structured Document Tags. Writer Content Controls are meant to perform a great handling of this third type of form filling. See Miklos Vajna‘s talk about what we have done to bring themes to LibreOffice, hear what still needs doing and find out how you can help.




Szymon Kłos

 17:40 – LibreOffice Technology devroom See details

LibreOfficeKit – Bridge Between Your Application and LibreOffice

Szymon Klos gives a short introduction into integrating LibreOffice using LibreOfficeKit with external software. He will describe the most important code pieces and show, where to look for information. Furthermore, he’ll demonstrate how to add new features, which API we provide, and what can be done with tiled rendering.


Michael Meeks

 17:50 – LibreOffice Technology devroom See details

Collabora Online Over Lockdown – How LibreOffice Technology in the Browser Got Better

Come and hear how Collabora Online (COOL) has improved over the COVID-19 era, not only in core feature-function, but also in ease of access and deployment for everyone. See how we can deliver scalable, secure, on-premise editing of your documents with a simple, easy to deploy office for the free world.


Pedro Pinto Silva

 18:10 LibreOffice Technology devroom See details

Make Collabora Online Yours – Customize and Integrate it Everywhere

Collabora Online is quite flexible in the means that you can alter to your personal taste without the need to change other core components. Pedro Pinto Silva shows how to make Collabora Online yours. Discover all the shining new additions to the user interface and learn how to customize and integrate it everywhere.


Tor Lillqvist

18:30 – LibreOffice Technology devroom See details

Collabora Online and WASM – Assembling Off-line Collabora Online with the Web

Come hear Tor Lillqvist‘s talk about a new approach to enabling browser deployment of rich office functionality – built on top of allotropia’s investment in enabling the core LibreOffice technology to compile to Web Assembly (WASM) – combined with the Collabora Online front-end. Hear about how this can be used to provide a fall-back (non-collaborative) editing mode for when you lose network connectivity for a while, and about the plans to re-synchronize documents on the return from such a tunnel.



About Collabora Online

Collabora Online 22.05 is our latest enterprise release. It’s suitable for large-scale deployment, and comes with SLA, enterprise support with signed security updates as well as interaction with product management, helping to direct our development priorities. Collabora Online integrates flawlessly into Nextcloud, ownCloud, Seafile, and many of the major file sync & share, groupware and hosting solutions. It’s ideal for organizations that want to collaborate on documents, without losing control over them or compromising on privacy. With the ability to host it on your own hardware or to integrate it into a trusted environment, Collabora Online is the ideal online office suite for digital sovereignty. Enterprises interested in using Collabora Online can check out our home page for more information on partner integrations and online demos. Hosting and Cloud businesses that wish to add Collabora Online to their product portfolio can become a partner. For any questions or tailored solutions, do not hesitate to contact


Thank you for a marvellous 2022!

Thank You for Everything We Achieved Together in 2022 🤝

At the end of the year, we like to look back at what we have achieved as a team in cooperation with our worldwide network of partners and the community. Luckily, the year 2022 was less dominated by the global pandemic. Throughout the year, international travelling became easier and in-person events and conferences became much more common again. However, the world kept being shaken. The Russian assault on Ukraine emphasized once again the massive importance of digital sovereignty, as Michael Meeks pointed out in several of his talks, like his Digital Sovereignty talk at the SFScon22.

Collabora held the first in-person COOL Days 2022 in Berlin, which brought together partners, the team, and the community. Collabora Online, Collabora Office and our mobile apps have all seen major performance improvements and increased functionality. We released the new major release of our flagship product Collabora Online 22.05, including performance boosts and impressing new features. Thank you for your support! Let’s take a look at what we have achieved together this year. 💜

Collabora Online 22.05: New Features and Better Performance 📈

With the release of version 22.05, Collabora Online reached new heights in performance, interoperability and usability. Many exciting features that had earlier been implemented and fine-tuned inside CODE 22.05, have been introduced this month.

Collabora Online 22.05 Brings Grammar Checking, Giant Spreadsheets and Performance Wins

Grammar check in a Writer Document in Collabora Online 22.05
Sparklines in Collabora Online 22.05
Translate using DeepL in Collabora Online
Consistent Language identification in Collabora Online 21.11


CODE 22.05 Cutting-Edge Features and Path to a Rock-Solid Enterprise Version 💪

The latest major release of the Collabora Online Development Edition CODE 22.05 was released in June. Versions of CODE always appear in advance of the corresponding version of Collabora Online. The Development Edition contains all new features which are extensively tested before being incorporated into the Enterprise version. An overview of CODE releases for the year 2022 can be found in the release notes. You can find the conversations about CODE on social media, by searching for the hashtag #cool_dev on Mastodon or Twitter.


More Groundbreaking Major Releases: Collabora Online 21.11✌️

The Year 2022 saw two major releases. In January, we released the enterprise version 21.11 of Collabora Online. It included a complete redesign of the sidebar, enhancing its responsiveness and had a strong focus on performance enhancements.

Collabora Online 21.11 Including a New Sidebar, RTL Support and Performance Boosts

  • January 2022, major release 21.11 introducing a quicker, “native” sidebar, right-to-left support, Calc-Excel compatible formulae and improved PPTX import
  • March 2022, Collabora Online 21.11.2 including Accessibility Checker, faster rotation of bitmap graphics, and an improved UX
  • April 2022, Collabora Online 21.11.3, dynamic configuration of multiple hosts and improvements for complex commenting cases
  • May 2022, Collabora Online 21.11.4, toggling between Compact View and Tabbed View now available through the user interface, several functions added to the UI’s
  • June 2022, Collabora Online 21.11.5, support of emphasis animations (spin, grow, shrink) in SVG presentation engine of Collabora Online Impress
  • August 2022, Collabora Online 21.11.6, many fixes added including the zoom factors in the glow and soft edge effects and the CSV import dialog
  • October 2022, Collabora Online 21.11.7, fixed selection of candidates for Japanese IME input, UI for adding print ranges in Calc, and override CheckFileInfo
  • October 2022, Collabora Online 21.11.8 several fixes like the SVG export of text fields, a memory leak related to the remote config feature, UI fixes
RTL support introduced in Collabora Online 21.11
Fast image rotation in Collabora Online 21.11.2
Consistent Language identification in Collabora Online 21.11


Powerful New Features for Collabora Office on the Desktop 🖥️

Collabora Office 22.05 Continues Enhancing Productivity and Interoperability

May 2022 saw the latest major release of Collabora Office, our long term supported desktop Office Suite for Windows, macOS, and Linux. This release brought a number of powerful productivity features like spreadsheets with 16,000 columns, sparklines to Calc (funded by the EU’s Horizon 2020 research and innovation programme) and saw linked paragraph and character styles arrive in Writer. The new features developed by Collabora are now also available in LibreOffice 7.4. Collabora Office for Windows is available through the Microsoft Store. The latest version for macOS can be bought from the App Store. Furthermore, we are encouraging you to help us test the latest features inside our unstable snapshots.

Further updates throughout the year included additional features & improvements:

  • September 2022, Collabora Office 22.05.6 including chart data tables, document themes in Impress, and content controls in Writer
  • November 2022, Collabora Office 22.05.8 new Content Control features (combo box, titles, tags) PDF export of the content controls mapped to PDF forms
16384 columns available in Calc in Collabora Office 22.05
Sparklines in Collabora Office 22.05
Enhanced interoperability of transparent shadows in tables in Collabora Office 22.05

Collabora Office 21.06 Saw Updates and Improvements

Numerous Fixes & Updates for Collabora Office 6.4

Moreover, the Collabora Office 6.4 branch saw numerous updates, mostly including fixes and performance and interoperability improvements. You can find these changes documented inside the release notes.


Many new Features for Collabora Office for Android, iOS & Chrome OS📱

Collabora Office Brings Powerful Office Productivity to Your Pocket

This year saw a major update of Collabora Office for Android, iOS & Chrome OS including numerous advanced productivity features, excellent document compatibility and a much improved user experience. The first major release to version 21.11 included performance improvements, a faster & responsive toolbar on tablets, enhanced contextual Toolbars, better shadow effects and much more.

  • April 2022, Collabora Office 21.11.3 for Android, iOS & Chrome OS – major release including Contextual toolbars, improved PPTX import, blurry shadows, soft edges for objects
  • August 2022, Collabora Office 21.11.6 for Android, iOS & Chrome OS – improved user experience and fixes
Improved Import of PPTX with Shaped Images


Contextual Toolbars enhancing the user experience
Improved Shadow Effects
Glow & Soft Edge effects


 Amazing News, Interesting Figures 📈

280 Partners Worldwide

In 2022, our large network of amazing partners kept growing. We can now rely on over 280 partners from more than 50 countries. We help each other to promote open source, privacy & digital sovereign solutions and re-invest the proceeds into creating great new software. Find a Collabora partner in a special field or area, or become a partner yourself!


Collabora’s Contributions to LibreOffice 7.3 and 7.4

Collabora is part of the ecosystem developing and advancing LibreOffice technology. Our developers are responsible for many commits to the LibreOffice core. Thanks to the sponsorship of our clients, we were able to introduce many new features and improvements to LibreOffice 7.3 and LibreOffice 7.4. The LibreOffice 7.3 release saw many performance focused enhancements (increased PDF export speed of some complex documents, faster loading of large RTL documents and insertion of large charts, rendering improvements in the Skia-based rendering backend and introduction of a Skia-based rendering backend on macOS). We also introduced numerous new features and interoperability improvements to LibreOffice 7.4. This version saw the arrival of native rich text and checkbox content controls support from Word, remote LanguageTool grammar checking, support for sparklines (funded by the EU’s Horizon 2020 research and innovation programme) and the use of 16384 columns in Calc and support for WebP images. Find more technical background on some of our contributions inside this blog. More great stuff is going to arrive in LibreOffice 7.5. We appreciate any help in testing. You’ll find the latest features in a Collabora Office snapshot or a pre-released Dev-Version of LibreOffice.

Linked paragraph and character styles in Writer
Example with 3 types of sparklines


Collabora Online Community Contributions #cool_dev 📈

The Collabora Online Community kept growing and helped to improve the software through their commits, feedback, and translations. You can see from the stats above that our Community is doing great things! You, too, can help to make Collabora Online better. Join the discussions in our forum, translate strings on Weblate, file bug reports or feature requests on GitHub and spread the word on Collabora Online!


The Collabora Online SDK ⚙️

The Collabora Online SDK describes the main methods that allow you to interact with different Collabora Online components. Find installation guides, frequently asked questions, Post Message API and documentation on exiting integrations and on how to create new ones. Of course, we added new documentations to the SDK this year for new features like the DeepL Translator (sponsored by Adfinis) or the LanguageTool Grammar Checker.


Starting at a Distance, Coming together in Person Again 🤝

The beginning of the year 2022 was still heavily impacted by the global pandemic. Major events like FOSDEM 2022 or the FOSSASIA Summit 2022 took place as remote events. Others had been rescheduled to a later date, like the Univention Summit. Luckily, throughout the year, travelling became easier again, and many conferences, such as the LibreOffice Conference in Milan, and the Nextcloud Conference in Berlin, could take place in person again. In October, we held our own COOL Days in Berlin – for the first time as an in-person meeting with the Collabora team, community and our partners.

COOL Days 2022 in Berlin

This year, for the first time ever, we were able to host the COOL Days as an in-person event. The three-day event focused exclusively on topics related to Collabora Online – and on some fun and team building experiences. Read the wrap-up of our activities from the community day, the partner day and the tech day on our blog. All the recordings of the talk from the Tech Day can be found on our playlist on YouTube, many slides can be found inside our repository on GitHub. The next COOL Days are coming very soon… Join us in Cambridge in March 2023!

COOL Days 2022 Impressions

Ready for take-off? We went skydiving.
Joining staff and partners at the COOL Days
Developer talks at the Tech Day

COOL Days 2022 Videos

Using DeepL in Collabora Online by Jan Holesovsky
Dynamic Font Download by Tor Lillqvist
PDF Export Advanced Options by Miklos Vajna


FOSDEM 2022 – A Massive Remote Experience

Whether on-site in Brussels or as an online event like 2022 – FOSDEM is one of the major gatherings for Open-Source developers. The Collabora team held several talks on Collabora Online and LibreOffice technology. Find the all videos of our talks in our FOSDEM 2022 playlist and all the slides in our blog.

Click image to download slides, click here for the video
Click image to download slides, click here for the video
Click image to download slides, click here for the video


Collabora at the LibreOffice Conference in Milan

This year’s LibreOffice Conference was held in Milan and saw many talks by the Collabora team. All the recordings are available in our YouTube playlist and the slides can be downloaded from our blog.

Click image to download slides, click here for the video
Click image to download slides, click here for the video
Click image to download slides, click here for the video


News by Collabora Directly into your Inbox 📨

Keep up to date with our public newsletter. If you would like to receive regular updates like this one on the news on Collabora Online, Collabora Office and future COOL Days events, please sign up to our newsletter.



It has been a very busy year here at Collabora Productivity. We have enjoyed seeing the Collabora Online Community grow and keep on advancing our mission to make open-source rock. We continued giving users privacy and businesses control over their data. We managed to achieve excellent results, and had a good time working on them – despite some challenging conditions that persisted in 2022. The Berlin edition of COOL Days was one of the highlights for us this year. We have big plans for 2023, some of them unfolding already in early spring! Don’t hesitate to get in touch with us, if you’d like to partner with us, or to download Collabora Online. Thank you for the great support this year. We wish you all a Merry Christmas and a Happy New Year!

Thank You!

Collabora’s Contributions to the LibreOffice Conference 2022 in Milan

The Talks and Slides by Collaboran’s at the LibreOffice Conference 2022

The LibreOffice Conference 2022 (LibOCon) took place from September 28 to October 1 in Milan. It was the first LibreOffice Conference since the outbreak of the COVID-19 Pandemic that took place as an in-person event. Collabora was one of the sponsors, and a significant number of our developers contributed talks on various aspects of LibreOffice technology. Did you miss any of those? Don’t worry! All our talks are available for you on YouTube inside our LibOCon playlist. Please also feel free to download the slides we included in this blog post.

Keynotes and Advocating

Michael Meeks: Sponsor Keynote Collabora

Michael Meeks, Managing Director of Collabora Productivity, takes a look at the latest developments in LibreOffice from an organisational and ecosystem perspective. See details

Watch the talk
Download the slides

Michael Meeks: The ongoing story of Online

Hear Michael Meeks tell the history of LibreOffice in the browser. From it’s pre-historic past as StarPortal, through gtk-broadway prototypes, to Collabora Online as we know it today. See details

Watch the talk
Download the slides

Technical Talks

Sarper Akdemir: Chasing an Interoperability Bug in Impress

During the Quality Assurance track, Sarper Akdemir explained how to fix an interoperability bug by showcasing the whole process of understanding, fixing, and implementing tests. See details

Watch the talk
Download the slides

Tomaž Vajngerl: Sparklines and Chart Data Tables – New Features in Calc

Sparklines are mini charts, that are drawn into a cell. In his talk, senior software engineer Tomaž Vajngerl presented the features and the challenges during the development. See details

Watch the talk
Download the slides

Miklos Vajna : Content Controls in Writer

While LibreOffice and Collabora Office were already capable of filling forms via form controls or form fields, they can now also fully represent content controls. In this talk by Senior Software Engineer Miklos Vajna, see how this work was implemented! See details

Watch the talk
Download the slides

Follow Collabora

Collabora Productivity created Collabora Online, a powerful online office suite, which you can integrate into your own infrastructure. It prioritises your digital sovereignty and provides you with all the tools to keep your data secure, without compromising on features. Collabora provides a wide range of products, as well as consulting services for enterprises and governments. Powered by the largest team of certified LibreOffice engineers in the world, Collabora is a leading contributor to the LibreOffice technology and community. Collabora Office for Desktop and Collabora Online provide a business-hardened office suite with long-term support. Collabora’s multi-platform policy is completed with Collabora Office for iOS, Android, and Chrome OS. Collabora Productivity is a division of Collabora, the global software consultancy dedicated to providing the benefits Open Source to the commercial world, specializing in mobile, automotive and consumer electronics industries. For more information, follow us  on Twitter, LinkedIn and YouTube.



Collabora Online – A Real Alternative

Managing Change

As humans we’re bad at change; we much prefer what we know and actively protect the status quo. Like it or not, the uncertainty we’ve all experienced over the last two years has forced change upon us. This has challenged organisations to find real alternative solutions to new operational challenges, such as homeworking, and question many of the norms that had previously been ‘set in stone.’

For most organisations, office document functionality underpins their productivity. We’ve all relied on it for years without giving it much thought – it was ‘set in stone.’ Yes, software updates and improvements in functionality have been introduced over the years, but the basic environment has remained familiar, which has helped maintain productivity.

As its name suggests, office document software has been optimised for a traditional office environment. For most organisations pre-pandemic this meant manageable, predictable office buildings in which their staff gathered together to work. The need to enable and support widespread homeworking changed all of this.

What Had Been Relied On No Longer Worked So Well

Practically overnight, many organisations found that the office document software they had relied on for so long was not as suitable when used in a distributed, less-controllable, homeworking environment. In fact, many simply found it too difficult or too expensive to make it work! As a result, many needed to find an affordable solution that was quick and easy to implement, but, importantly, was familiar to their staff.

Commenting, Michael Meeks, General Manager of Collabora Productivity, said:

“Familiarity is so important when it comes to maintaining productivity. Staff in many organisations were already unsettled by their new homeworking reality so the introduction of a new look and feel to learn would have simply added to their uncertainty, and further undermined productivity.”

Collabora Online – A Real Alternative

Unlike many other reduced functionality office document solutions, Collabora Online provides a feature rich and familiar look and feel. Built on the Open Source LibreOffice Technology core, Collabora Online offers a real alternative for organisations experiencing problems with their existing office document solution. In addition to its  familiar look and feel, Collabora Online provides tried and tested collaboration functionality ideally suited to the demands of a homeworking environment.

Tip of the Spear

Migration away from any well-established application is never completely straightforward. After all, we don’t like change. But when faced with specific operational challenges, many organisations are finding that the introduction of Collabora Online is both straightforward and affordable. As such, it can represent the ‘tip of the spear’ for those looking to start or progress a wider migration strategy that enables them to address vendor lock-in, give greater control over data sovereignty as well as to protect data security, within a distributed working environment that looks here to stay.

Michael Meeks concluded:

“Reliance on a small number of dominant vendors is not inevitable! Office document migration is a realistic first step to prove the wider strategy and can help secure some important early wins, such as improved collaboration, better productivity and much greater control over distributed data. This is the best place to start getting your data back under your control.”

Talks and Slides by Collabora at FOSDEM 2022

FOSDEM 2022 – The Talks and Slides from the Collabora Team

Whether on-site in Brussels or as an online event like the last two years, FOSDEM is and remains the largest and most important gathering of Open-Source developers in Europe. We’d like to express our gratitude to the community and the organisers. The Collabora team gave numerous talks in the LibreOffice Technology devroom. Missed a presentation? Below you will find links to all videos and to the downloads of the slides.


Gülşah Köse

LibreOffice Technology devroom

OOXML Document Analysis

Collabora developer Gülşah Köse explains how we respond when we receive a problematic OOXML document from a customer and demonstrates the solution to a sample bug. See details

Watch the talk!
Download the slides!


Miklos Vajna

LibreOffice Technology devroom

Document Themes in LibreOffice Impress and Elsewhere

LibreOffice has been capable of handling colour palettes on its UI for a while. Meanwhile, the competition introduced document themes, which are a fixed set of 12 colours, to be attached to various parts of documents. See what we have done to bring themes to LibreOffice and find out what still needs doing and how you can help. See details

Watch the talk!
Download the slides!


Gökay Şatır

LibreOffice Technology devroom

Canvas For Rendering UX

Gökay Şatır shows why we chose to use Canvas for rendering the UI and the document, and explains the structure we created to execute this task. See details

Watch the talk!
Download the slides!

Mert Tümer

LibreOffice Technology devroom

Editing Simulation

Performance measurements are really challenging. This presentation by Mert Tümer covers how we can achieve reliable and repeatable performance tests by implementing clever tools that simulate realistic use cases. See details

Watch the talk!
Download the slides!


Jan Holesovsky

LibreOffice Technology devroom

LibreOfficeKit Recent Developments

LibreOffice can be used by other applications via its C++ API called LibreOfficeKit. Primary use cases for this are document conversion and editing in Collabora Online. The LibreOfficeKit is currently being expanded. Jan “Kendy” Holesovsky talks about these recent developments See details

Watch the talk!
Download the slides!



Michael Meeks

LibreOffice Technology devroom

Online Performance – Making Collaborative Editing Quicker

Collabora Online has a novel model that re-uses the core LibreOffice Technology to provide rich collaborative editing. Recently, we have been focusing our development on improving the look and feel of document editing. Watch Michael Meeks talk about how Online performance wins are making browser-based collaborative editing quicker. See details

Watch the talk!
Download the slides!


Szymon Kłos

LibreOffice Technology devroom

Building Collabora Online UI Based on the LibreOffice Components

JSDialog is a “framework” for sharing UI components between Collabora Online and LibreOffice. It was used to bring the Sidebar, the NotebookBar, and dialogs to the web. It provides native HTML widgets connected to the original LibreOffice code, giving the user rich editing options even on mobile devices. Watch Szymon Kłos‘ talk for a brief summary of what has already been done and how it works. See details

Watch the talk!
Download the slides!


Pranam Lashkari

LibreOffice Technology devroom

Collabora Online on Kubernetes – Setup & Deployment

See this talk by Pranam Lashkari for a comprehensive demonstration of how to deploy Collabora Online using Kubernetes. See details

Watch the talk!
Download the slides!


Ashod Nakashian

 16:00 – 16:30 – LibreOffice Technology devroom

Collabora Online: Async-Saving Design and Testing

This talk explores the challenge of saving and uploading documents to the storage server in an asynchronous way, to improve performance, user experience and also ensure higher reliability and resiliency. Ashod Nakashian covers both the design and the challenges of testing a highly critical component of a production product.

See details Join video & conversation

Watch the talk!
Download the slides!


Henry Castro

LibreOffice Technology devroom

Macro Dialog Feature

Watch Henry Castro‘s talk on the implementation of a Macro Selector Dialog on the client side to execute VBA macros on the server side. See details

Watch the talk!
Download the slides!



About Collabora Online

Collabora Online 21.11 is our latest enterprise quality release. It’s suitable for large-scale deployment, and comes with SLA, enterprise support with signed security updates as well as interaction with product management, helping to direct our development priorities. Collabora Online integrates flawlessly into Nextcloud, ownCloud, Seafile, and many of the major file sync & share, groupware and hosting solutions. It’s ideal for organizations that want to collaborate on documents, without losing control over them or compromising on privacy. With the ability to host it on your own hardware or to integrate it into a trusted environment, Collabora Online is the ideal online office suite for digital sovereignty. Enterprises interested in using Collabora Online can check out our home page for more information on partner integrations and online demos. Hosting and Cloud businesses that wish to add Collabora Online to their product portfolio can become a partner. For any questions or tailored solutions, do not hesitate to contact