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Introduction to my Project with GSoC

2026-05-24T00:00:00+00:00

Hello, in this post, I will write a little about my project for Google Summer of Code (GSoC) 2026. GSoC is a program meant to introduce new contributors into open source software development (https://summerofcode.withgoogle.com/</a>). I will be participating with the LibreOffice project. LibreOffice is an office suite that has programs like a word processor, a spreadsheet program, and a presentation program. These types of programs may be familiar to people who have used other office suites like Microsoft Office or Google Workpace.</p>

My project will add support for the JPEG XL image format to LibreOffice. Currently, attaching a JPEG XL image to a document will result in the image being attached as a generic file (filed as tdf#156931</a> in LibreOffice's bug tracker Bugzilla). This project will solve this bug, including adding relevant documentation and automated tests as appropriate.</p>

JPEG XL supports compression that is claimed</a> to be nearly lossless to the human eye. In addition, it is possible to losslessly transcode some images</a> between JPEG and JPEG XL, enabling compression without losing any data.</p>

Given the storage savings, JPEG XL support will be a useful addition for current users of LibreOffice users. And given the usage of JPEG XL in other programs like some web browsers</a>, this project will also help to maintain compatibility.</p>

Slightly Technical Details </a> </h2>
https://gerrit.libreoffice.org/c/core/+/128920</a>. This will be a useful reference when implementing another image format.</p>
Some specific things I noticed when doing a cursory look through of the commit:</p>

The vcl/ directory seems to be the appropriate place to add the implementation.</li>
vcl/source/filter/ will have a good chunk of the actual implementation, while vcl/qa/cppunit will have some tests.</li>
External libraries will be placed in external/.</li>
There is a dialog for exporting JPG/JPEG, WEBP, and other formats in svtools/source/filter/exportdialog.cxx. This should be updated to include JPEG XL.</li> </ul>
(The source code is viewable online</a>; the relevant project/repository here is "core".)</p>
In addition, the libjxl library</a> can be used for implementation or as a reference.</p>
Of course, unexpected implementation issues may come up, and I will be looking to my mentor and other members of the LibreOffice community for possible assistance in this case.</p>
Finally

A Self-Introduction

2026-05-24T00:00:00+00:00

Hi, my name is Jesus Solis. I graduated from the Massachusetts Institute of Technology with a Bachelor of Science in Computer Science and Engineering. This gave me a well-rounded education in things like programming and math.</p>

In college, I took a class focusing on software performance, where I used C for projects such as making more efficient ‘malloc’ implementations as measured with various metrics. I also took a class on interpreters and I used C++ to make an interpreter for a Python-like language. I enjoyed these classes and hope to work with more low-level code like this in the future.</p>

Open Source </a> </h2>
user space</a> code in C++, and I wanted to work with and learn more about this low-level code.</p>
In 2026, I applied to and was accepted to participate in the Google Summer of Code. More information on the project is available in another blog post</a>, as well as on the official Google Summer of Code website (https://summerofcode.withgoogle.com/programs/2026/projects/WdCsAb7P</a>). I look forward to contributing to open source software for a long time.</p>

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