computer science

GIMP

GIMP is a computer science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand GIMP rather than just read about it. In short: The GNU Image Manipulation Program or GIMP ( , GHIMP) is a free and open-source raster graphics editor. GIMP is always stylized in capitals and was formerly stylized as The GIMP.

Key takeaways

GIMP belongs to computer science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect GIMP to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of GIMP from memory before moving on to harder problems.

Reference excerpt

The GNU Image Manipulation Program or GIMP ( , GHIMP) is a free and open-source raster graphics editor. GIMP is always stylized in capitals and was formerly stylized as The GIMP. GIMP is commonly used for photo retouching, image editing, free-hand drawing, and converting between different image file formats. GIMP is not designed for drawing, however, artists and creators still use GIMP for drawing. GIMP is freely available on Microsoft Windows, Linux and macOS. It is licensed under version 3.0 or later of the GNU General Public License (GPL). The GIMP project is a non-profit supported by a community of volunteers. Users are encouraged to contribute. GIMP supports plugins and scripting, allowing users to extend its features and automate tasks.

History Spencer Kimball and Peter Mattis began developing GIMP in 1995. GIMP began as a semester long student project in the eXperimental Computing Facility at the University of California, Berkeley. GIMP was named the General Image Manipulation Program. Kimball and Mattis formed the acronym GIMP by adding the letter G to '-IMP', inspired by a reference to "the gimp" in the 1994 film Pulp Fiction. GIMP released version 0.54 publicly in 1996. This was the first public release of GIMP. The release attracted many users, and a community of contributors grew around it. These contributors produced tutorials, shared artwork, and introduced improved workflows and techniques. Richard Stallman of the GNU Project visited the University of California Berkeley in 1997, where Richard met with Kimball and Mattis. Kimball and Mattis asked him if they could change the initialism of GIMP, changing the G to 'GNU' from 'General'. Stallman approved the name change, and GIMP became part of the GNU software collection. The initial release of GIMP worked on Unix-based systems such as Linux, SGI IRIX and HP-UX. GIMP has since been ported to other operating systems, including Microsoft Windows (1997, GIMP 1.1) and macOS.

GTK a GUI toolkit was developed to facilitate the development of GIMP. GTK was initially called GIMP ToolKit. Peter Mattis was attributed with the development of GIMP ToolKit, this was due to having become disenchanted with the Motif toolkit which GIMP originally used. GIMP used Motif up until version 0.60.

GIMP's mascot Wilber

Tuomas Kuosmanen, also known as tigert, created Wilber the official mascot of GIMP. Wilber was created using GIMP on 25 September 1997. GIMP developers contributed additional accessories for Wilber, including in the Wilber Construction Kit. The kit is available in GIMP's source code at /docs/Wilber_Construction_Kit.xcf.gz.

Development GIMP is primarily developed by volunteers. GIMP is as a free and open source software project, associated with both the GNU and GNOME projects. The development of GIMP occurs in a public git source code repository. Developers communicate on public mailing lists and in public IRC chat channels on the GIMPNET network. Features are developed in public source code repositories. The GIMP team keeps new features in separate branches and later merged them into the main development branch after the team are confident new changes won't damage existing functions. This approach means that features do not always get merged or that features can take months or years before they become available in GIMP. Previously, GIMP applied for several positions in the Google Summer of Code (GSoC). From 2006 to 2009 there have been nine GSoC projects that have been listed as successful, although not all successful projects have been merged into GIMP immediately. The healing brush and perspective clone tools and Ruby bindings were created as part of the 2006 GSoC and can be used in version 2.8.0 of GIMP, although there were three other projects that were completed and are later available in a stable version of GIMP; those projects being Vector Layers (end 2008 in 2.8 and master), and a JPEG 2000 plug-in (mid 2009 in 2.8 and master). Several of the GSoC projects were completed in 2008, but have been merged into a stable GIMP release later in 2009 to 2014 for Version 2.8.xx and 2.10.x. Some of them needed some more code work for the master tree. Second public Development 2.9-Version was 2.9.4 with many deep improvements after initial Public Version 2.9.2. Third Public 2.9-Development version is Version 2.9.6. One of the new features is removing the 4 GB size limit of XCF file. Increase of possible threads to 64 is also an important point for modern parallel execution in actual AMD Ryzen and Intel Xeon processors. Version 2.9.8 included many bug fixes and improvements in gradients and clips. Improvements in performance and optimization beyond bug hunting were the development targets for 2.10.0. MacOS Beta is available with Version 2.10.4. The first release candidate for version 3.0, RC1, was released on 6 November 2024. After several more months of development, version 3.0 was completed and released on 16 March 2025. This represented the completion of seven years of development to complete a major overhaul of many of GIMP's features and dependencies. GIMP developers meet during the annual Libre Graphics Meeting. Interaction designers from OpenUsability have also contributed to GIMP.

Distribution Gimp is available on and distributed for multiple operating systems, including Linux, macOS and Windows. Many Linux desktop distributions include GIMP on a default installation, including Fedora Linux and Debian. GIMP is published on the Microsoft Store for Windows and has been available since 2022. GIMP is available for download on the projects website gimp.org. GIMP downloads were previously hosted on SourceForge and was transitioned to self-hosting in 2013 after users raised concerns that misleading ads led to unwanted downloads. SourceForge later repossessed GIMP's dormant account and hosted versions of GIMP for Windows that contained ads.

Features

Tools can be accessed via the toolbox and through menus and can be used to perform image editing operations. Some of the tools included are filters, brushes, transformation tools, selection tools, layers and masking tools. GIMP's developers have asserted that it has, or at least aspire to it having, similar functionality to Photoshop, but has a different user interface.

… excerpt ends here. Continue reading the full article.

Illustrations

GIMP: Animation showing brushes, patterns, and gradients in GIMP — Animation showing brushes, patterns, and gradients in GIMP

GIMP: Animation showing three docked and tabbed dialogs: layers, channels, and paths — Animation showing three docked and tabbed dialogs: layers, channels, and paths

Worked examples

Example 1 — a first encounter with GIMP

Start with the simplest possible case. Write down what GIMP claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In computer science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to GIMP before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about GIMP ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of GIMP

In research: GIMP appears in computer science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses GIMP in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: GIMP is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1995 software, AmigaOS 4 software, Applications using D-Bus, so understanding it makes those chapters shorter.
In everyday life: Look for GIMP outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study GIMP in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what GIMP means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain GIMP out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is GIMP in simple terms?

The GNU Image Manipulation Program or GIMP ( , GHIMP) is a free and open-source raster graphics editor. GIMP is always stylized in capitals and was formerly stylized as The GIMP.

Why does GIMP matter?

Because it connects several computer science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study GIMP?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on GIMP.