Insights from the Prague InstallFest 2025 Conference

LibreOffice community at Prague InstallFest 2025

Petr Valach from the Czech LibreOffice community tells us about feedback from the LibreOffice booth at this event…

InstallFest is a well­‑established yet relatively small open­‑source conference held annually in the Czech Republic, traditionally at the Faculty of Electrical Engineering building at Karlovo náměstí in Prague. Personally, I prefer these more intimate spaces over the larger venues like the Faculty of Information Technology, where the LinuxDays conference takes place. I highly appreciate the somewhat old­‑fashioned and historical atmosphere that fills every corner of the faculty building. It reminds me of English universities and other institutions like museums, where the ambiance of past eras is still preserved. Some may find it irritating, but to me, such a place has far more character than modern buildings devoid of history.

Building E of the Faculty of Electrical Engineering (FEL), or perhaps the shared building of the Faculty of Electrical Engineering and the Faculty of Nuclear Sciences and Physical Engineering (FJFI) on Trojanova Street, which I used to visit as a student – and even more so the main building of FJFI on Břehová Street, or the joint workplace of FJFI and the Faculty of Mathematics and Physics (MFF) of Charles University on Karlova Street – all of these buildings naturally have their own history; and with even older buildings, history seems to radiate from them, evoking a sense of mystery and unattainability.

I’ve had this deep respect for historic landmarks since my school years, when I first encountered the epochal Jaroslav Foglar trilogy set in the mysterious world of Stínadla (The Mystery of the Puzzle, Stínadla in Revolt, The Secret of the Great Vont). These books have not lost their charm even after all these years (this year marks the 85th anniversary of The Mystery of the Puzzle), and that’s because you can actually touch the buildings described in them. That’s the true magic of Foglar’s stories – they’re part fiction, part grounded in reality, whether it’s the locations, characters, or structures, and that makes them more believable and realistic.

And even the InstallFest conference has something in common with them. After all, it takes place right in the area where Stínadla is set, and the building itself stands just a few hundred meters from the birthplace of Jaroslav Foglar. In the conference venue, you can even find a poster for a course titled Planning the Movement of 3D Objects in a Complex Environment, featuring the iconic hedgehog in a cage – hiding the epoch-making invention of fourteen-year-old Jan Tleskač: a flying bicycle! Coincidence? I don’t think so. 😊

And now, on to the actual course of the conference.

LibreOffice community at Prague InstallFest 2025

Changes

Last year, InstallFest was saved by a new team led by Jan Langmaier. Once again, they did an excellent job – everything ran smoothly, without confusion or chaos. They deserve recognition for organizing and executing the conference in such a limited space.

This year saw an increase in the number of booth exhibitors, which naturally raised the question of where to place them all. Unfortunately, the LibreOffice booth drew the short straw and ended up in a separate lecture room designated for booths. As a result, the number of visitors to our booth was significantly lower; throughout the entire conference, we only had a handful of individuals with whom we had actual discussions (not counting those just interested in stickers and the like). Therefore, user feedback this time around was quite limited.

Key Observations

The majority of questions and comments from attendees revolved around four main areas:

  • Compatibility of Microsoft formats with LibreOffice
  • Funding of the project
  • Use of LibreOffice/Collabora Online
  • Issues with Impress

Compatibility with OOXML

LibreOffice provides solid support for OOXML formats, as used by Microsoft Office/365. The use of the plural is appropriate – it should be noted that Microsoft does not use the standardized OOXML Strict format as the default in its suite. This leads to a number of issues, which are described in more detail in this article.

Funding LibreOffice

A common question at every conference is how LibreOffice is funded. Although LibreOffice is a community­‑driven project, where volunteers do most of the work in documentation, translations, local marketing and other tasks, the majority of code contributions come from ecosystem companies. These companies offer migration services, employee training, and 24/7 support for organizations using LibreOffice. They can also be commissioned to develop new features, which are then made available to everyone.

But volunteers (like us) are crucial for spreading awareness about LibreOffice, translating the software and manuals, and supporting users. In the Czech Republic, significant translation work has been done under the leadership of Zdeněk Crhonek. Without these efforts, the project wouldn’t function properly, as corporations require localized environments and documentation.

Growing Interest in LibreOffice Online

Awareness of the online version of LibreOffice (via Collabora) seems to be increasing. This product deserves more public attention, as it is one of LibreOffice’s strongest assets. It offers a fully autonomous solution that can run on user­‑owned cloud infrastructure as well as other platforms.

However, one drawback is that no one offers LibreOffice Online as a fully managed cloud service. Users often complain about the lack of a ready­‑to­‑use hosted solution, making deployment more challenging. The Document Foundation cannot provide hosting services, but the demand for such a service is significant.

LibreOffice community at Prague InstallFest 2025

General Feedback

As with every conference, we received feedback about LibreOffice’s user interface. One of the biggest pain points is the icon sets – finding a suitable set for dark mode is nearly impossible. The Elementary icon set is considered the best by many users (including myself), but it is no longer being developed and lacks dark mode support. The Karasa Jaga theme is interesting but also lacks a dark mode version.

Another frequent request is for automatic updates. Windows users now have this feature as of LibreOffice 24.8, but it is still missing for Linux, due to the fragmented nature of the Linux ecosystem.

Impress

The most frequent critical feedback was about Impress, LibreOffice’s presentation tool. Some reports and requests included:

  • Videos embedded in Impress do not work in PowerPoint (and vice versa)
  • Unlike PowerPoint, Impress does not display a progress bar when playing a video
  • There is no way to pause an animation during a presentation (a long­‑standing bug that remains unresolved)
  • The presenter screen does not support formatted notes

Users are welcome to join the project to help to improve these features, or again, fund developers so that all users can benefit.

Let’s Play a Game!

For the first time, we introduced a small game at InstallFest. QR codes with LibreOffice­‑related questions were placed around the venue, and visitors had to collect them to solve a puzzle. We prepared 200 answer sheets, but only about 30 were used.

Thanks to The Document Foundation (specifically Mike Saunders), we had plenty of giveaways, including T‑shirts, hoodies, and backpacks. Five lucky winners received prizes:

  • Milka (T­‑shirt)
  • Jaroslav K. (T­‑shirt)
  • Jan H. (T­‑shirt)
  • Šimon H. (backpack)
  • Vojtěch K. (hoodie)

LibreOffice community at Prague InstallFest 2025

Congratulations to the winners, and thanks to all participants!

A special shoutout to Ondra, a schoolboy who was the only one to complete a non­‑competitive task – writing a LibreOffice improvement suggestion on the back of his form. His request? Better copy/paste formatting options in Calc. Thanks, Ondra! Too bad you didn’t win this time – maybe at LinuxDays in autumn! 😊

LibreOffice Conference 2025 will take place in Budapest

Photo of Budapest

For this year’s LibreOffice Conference we had two location proposals: Luxembourg and Budapest. Members of The Document Foundation voted to choose the final location, and we can announce that Budapest is the winner.

Currently, the expected date for the conference is September 1 – 5, but this is still subject to change. We will confirm the final dates soon, then the fun begins: the call for papers, building up the schedule, planning social events and more…

Stay tuned to this blog for further details!

(Photo credit: JStolp on Pixabay)

Video: Document Freedom Day with the Nepalese LibreOffice community

Screenshot of Jitsi call showing participants in the talk

On March 26, we celebrated Document Freedom Day. Mike Saunders from The Document Foundation, the non-profit behind LibreOffice, gave an online talk about the importance of open standards and free software:

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LibreOffice project and community recap: March 2025

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Here’s our summary of updates, events and activities in the LibreOffice project in the last four weeks – click the links to learn more…

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  • On March 26 we celebrated Document Freedom Day 2025, which raises awareness about the problems of proprietary standards, and encourages people to move to open standards like the Open Document Format.

Document Freedom Day logo

  • In terms of the suite, there were two minor updates to LibreOffice in March – 25.2.2 and 24.8.6. All users are recommended to stay up-to-date.

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LibreOffice Conference 2024 group photo

Keep in touch – follow us on Mastodon, Bluesky, X (formerly Twitter), Reddit and Facebook. Like what we do? Support our community with a donation – or join our community and help to make LibreOffice even better!

LibreOffice Conference 2025: Location proposals

LibreOffice Conference 2025 group photo

The Document Foundation (TDF) has received two different proposals for the organisation of the LibreOffice Conference 2025. TDF Members will receive an email asking them to cast a vote and decide which will be the final venue.


Budapest

Full application here

City: Budapest, the capital of Hungary and a former part of the Austro-Hungarian Empire, is well known for its stunning landscape, with the Danube River and surrounding hills, its Belle Époque architecture, and its vibrant atmosphere. The city offers numerous attractions, including the medieval Buda Castle district and its famous thermal spas. As a popular tourist destination, Budapest boasts a wide range of accommodations, cafés, parks, and a bustling nightlife with many pubs and entertainment venues. Additionally, Budapest serves as Hungary’s administrative, cultural, and educational centre, with a population of around one million. The city is home to numerous museums and academic institutions.

Entity: The LibreOffice Conference 2025 in Budapest would be co-organized by the FSF.hu Foundation and the ELTE University Faculty of Informatics. The FSF.hu Foundation, established nearly 25 years ago, was created to support the localization and promotion of FLOSS in Hungary. In addition to handling financial matters, FSF.hu has offered to issue visa invitation letters. A list of countries requiring a visa for travel to Hungary can be found on the Hungarian Ministry of Foreign Affairs website.

Dates: The expected date for the conference is September 1 – 5, 2025.

Venue: The conference venue will be located in the heart of Budapest, at ELTE University’s Faculty of Informatics, one of Hungary’s leading universities. The venue, near by the Danube River offers a spacious university campus with numerous large and small rooms, computer labs, and open spaces ideal for community gatherings, meeting the typical needs of a LibreOffice Conference.

The venue provides a reliable Wi-Fi connection suitable for a conference of this scale, and the auditoriums used for the event will be wheelchair accessible. Additionally, the university can provide personnel for video recording during the main conference days.

Team: The organizing team consists of experienced contributors from the local LibreOffice community, including Annabella Szép, Anikó Kelemenné Husi, Gábor Kelemen, András Tímár, Miklós Vajna, Balázs Varga, and Attila Szűcs. Each of them has extensive experience in developing, testing, or teaching LibreOffice. This dedicated team shares a deep commitment to the project, working together effectively as a well-coordinated group.

From ELTE Faculty of Informatics, Ágnes Erdősné Németh is responsible for managing the conference venue.

Gábor Kelemen, head of the organizing team, will oversee visa and sponsor relations.
After many years of collaboration and contributing to LibreOffice’s growth, we now hope to be awarded the opportunity to host the LibreOffice 2025 Conference in Budapest.


Luxembourg

Full application here

City: Belval is the new technology and University campus being developed next to Esch-sur-Alzette, the second largest city in Luxembourg, and is optimally positioned in Europe to provide visibility to LibreOffice and its community as well as for engaging with the various EU institutions it hosts. Being also bordering with France, Belgium and Germany it facilitates the participation to the conference of organisations within the greater region creating even more opportunities to promote LibreOffice and the complementary Open Source software that can form the foundations for the technological autonomy/sovereignty that many countries are now looking to achieve.

Entity: TDF will be the legal entity handling financials and sponsorships directly.

Dates: To guarantee that all participants will have a hotel room on campus we selected the week starting the 29th of September 2025.

Venue: As it has been proven to be an excellent location, we will be hosting it again in last year’s venue, within the Belval campus of the University of Luxembourg, and we will work to get even more support from ministries, local organizations, and of course the university itself.

More information about the location can be found here.

Team: The organisation of the conference is a joint effort made by several local volunteers and organisations coordinated by Paolo Vecchi with the support of the Digital Learning Hub and 42 School which are providing the venues.


So those are the two proposals, and as mentioned, TDF Members will receive an email asking them to cast a vote and decide which will be the final venue.

Why be a member of TDF?

LibreOffice Base and Firebird – a special relationship

(Translated from the Spanish original.)

Juan C. Sanz writes:

The Firebird database is distinguished by its unique features within the LibreOffice Base compatible database ecosystem. Why do I consider Firebird to be special? Because it is the only database engine that supports all possible forms of connection in Base and also allows the creation of both embedded, external and server databases directly from LibreOffice, without having to use specific tools.

LibreOffice offers the following Firebird connection options:

  • Embedded database
  • Standalone database file (no server required)
  • Database server via internal driver

Additionally, like other database servers, it is possible to establish a connection via JDBC or ODBC connectors. These connectors are available free of charge and as open source software on the official Firebird website.

Advantages of multiple connection options. Firebird offers several ways of connection that represent important advantages:

  1. Embedded database: The embedded or internal database consists of a *.odb file containing all the database facilities (table view, query designer, forms, reports, macros) together with the data.

    This option is especially easy and accessible for users with little database experience. Simply enable the experimental features of LibreOffice to start using it. It is ideal for learning basic database concepts and the Base tool.

  2. External database file: For advanced users looking to work more rigorously, it is recommended to migrate from embedded databases to external files. This type of connection does not require additional installations; a new file can be created using the Connect to an existing database option, rather than the Create a new database option (the nomenclature can be confusing). This connection method offers greater security by storing the data in a separate FDB file from the Base ODB file. In addition, modifications are saved instantly, which reduces the risk of data loss in the event of computer crashes or failures. In the long term, external Firebird files can be connected to servers without modification, as long as the versions are compatible. Transformation between different versions of the FDB file can be done easily and smoothly.
  3. Firebird database server: In this case, we will have a Base file with the functionalities of forms, query designer, reports and macros and the data will be hosted in a Firebird database server. The server is a software that does not have to be installed in a special computer, it could even be installed in the same computer that we use to connect to it. This type of connection provides specific advantages:
    • Allows simultaneous access by multiple users
    • Facilitates permissions management and data access control
    • Provides greater speed in the delivery of information

The connection to the server via the internal driver provides a fast and easy way to configure connection. In any case, ODBC and JDBC connections also work without problems, although, as they require an intermediate connector, they are usually slower.

For all these reasons, I consider that Base and Firebird are an ideal combination.