What is a FIG File?Two Formats

🎨 What is a FIG File?

A FIG file uses the .fig extension, and the tricky part is that the same extension is shared by two completely unrelated formats. Most of the time a .fig file is either a Figma design file or a MATLAB figure file.

These two are not variations on a theme, they are separate file types that happen to end in the same three letters. A Figma .fig holds a visual design, the screens, layers and prototype links a team builds when they design an app or a website. A MATLAB .fig holds a figure in the scientific sense, a chart or plot produced from data, with all its axes and settings saved so it can be reopened and adjusted. One belongs to the world of product design, the other to engineering and data analysis, and knowing which camp your file came from tells you almost everything about how to open it.

Because the extension is reused, the single most useful thing you can do with a .fig file is work out which application created it before trying anything else. A design file opened in the wrong tool will simply refuse to load, and the same goes the other way around. Beyond these two there are a few older and rarer uses of .fig, covered later, but for nearly everyone the question comes down to Figma or MATLAB. The rest of this guide helps you tell them apart and then open, export or convert whichever one you have.

🔍 Which FIG Do You Have?

You can usually work out which kind of .fig you are holding from where it came and what you were doing when you got it, without opening anything at all.

Think first about the source. If the file arrived from a designer, a product team or a link to a design project, and the work involves screens, buttons or app layouts, it is almost certainly a Figma file. If instead it came from an engineer, a researcher or a piece of analysis code, and the subject is data, plots or charts, it points to MATLAB. The people and the purpose around the file are the strongest clue. File size offers a hint too, since a rich Figma design tends to be larger than a single MATLAB chart, though this is rough rather than reliable. When nothing else is clear, the surest test is to try the likely application, because a Figma file opens in Figma and nowhere else, and a MATLAB figure opens in MATLAB and nowhere else, so the one that loads it is your answer.

🎨 Figma Design Files

Figma is a widely used design tool for building the look and feel of apps and websites, and its .fig file is the container for one of those projects.

Inside a Figma .fig sits everything that makes up a design. That means one or more pages, the layers within them, and the individual elements such as text, shapes, images and components, along with the prototype links that connect screens into a clickable flow. It is the offline, saved-to-your-computer form of a design that normally lives in the cloud, which is why people reach for it to keep a local backup or to hand a project to someone else. Figma is cloud based, so designs are stored online and saved automatically as a team works, and the .fig appears only when someone chooses to save a local copy. For that reason a design is more often shared as a Figma link than as a file, letting collaborators open it in the browser without a download. The format belongs to Figma and only Figma, so a .fig from Figma will not open in an ordinary image viewer, a web browser or a graphics editor. To work with one you use Figma itself, which runs in a web browser and as a desktop app on Windows and macOS, as well as on mobile. When you need the design in a common format, Figma exports the frames to images or PDF rather than expecting other tools to read the .fig directly.

📊 MATLAB Figure Files

MATLAB is a programming and numerical computing environment used across science and engineering, and its .fig file stores a figure, which in MATLAB means a chart or plot drawn from data.

When you produce a graph in MATLAB, a line plot, a histogram, a surface and so on, you can save the whole thing as a .fig file. What sets this apart from saving a plain picture is that the .fig keeps the figure live. It records the data behind the graph together with the axes, labels, colours and other settings, so reopening it gives you the editable figure again rather than a flat image. The file is stored as binary data in a form related to MATLAB's own MAT data format, which is why it is not human readable and needs MATLAB to interpret it. You save one with commands such as savefig or saveas, and open it again with openfig or through the File menu. One thing to watch is version compatibility, since a figure saved in a recent MATLAB release may not open in a much older one, so it helps to know which version a shared file came from. Researchers lean on this when they want to revisit or tweak a chart later, or share it with a colleague who also uses MATLAB, keeping every detail of the visualisation intact.

🗂️ Other Kinds of FIG

Figma and MATLAB cover almost every .fig file you are likely to meet, but the extension has a longer history and a handful of older tools claimed it too.

The oldest of these is Xfig, a drawing program from the 1980s on Unix and Linux systems, which saves simple vector drawings as .fig files. Its figures are made of lines, shapes, arcs and text, and were often converted to other formats to drop into documents, a job still done today by descendants such as WinFIG. A .fig extension has also turned up as a biped figure file in the 3ds Max animation software, where it records a character's skeleton and pose, and in a few other niche places over the years, from a Fortran compiler's linker options to certain game and scientific tools. These uses are rare now, so if a .fig file does not open in Figma or MATLAB and clearly is not either, its origin is usually a clue that you are looking at one of these older or specialised formats, and identifying the program that made it is the way forward.

📂 How to Open a FIG File

Opening a .fig file always comes back to the same principle, which is to use the application that made it, so the first step is knowing whether it is a Figma or a MATLAB file.

For a Figma file, open Figma in a web browser or install the desktop app for Windows or macOS, then bring the file in through the Import option rather than expecting it to open on a double-click. Once imported, the design appears exactly as its author left it, ready to view or edit. For a MATLAB figure, open MATLAB and load the file with the openfig command or through File and then Open, and the plot returns as a working figure. There is no reliable way to open either kind properly without its own program, since both store their contents in formats only that software understands. If you do not have the application, the practical routes are to ask whoever sent the file to export it to a common format, or in the Figma case to use its free web version, which needs only a browser and a Figma account.

👀 Viewing a FIG Without the Software

Not everyone who receives a .fig file owns the program that made it, and the good news is that you often still have a way to see what is inside, even if editing needs the real thing.

Seeing a Figma design

Figma helps here because it runs in a browser and its basic tier costs nothing. You sign up for a free account, open Figma in a web browser and import the file, and the design appears for you to look through even if you never install anything. That free web route is usually the simplest way for a client or colleague to view a design without buying software. When you only need a static copy, the person who owns the file can send you an exported image or PDF instead, which opens anywhere.

Seeing a MATLAB figure

MATLAB is different, since it is paid engineering software rather than a free web app, so viewing a figure without it takes a little more effort. A handful of dedicated figure viewers can display a MATLAB .fig and let you read values off the plot without a full MATLAB licence, and some let you export it onward. Failing that, the reliable path is the same as with any locked format, which is to ask whoever produced the figure to save it as a plain image or PDF. A number of online viewers also claim to open a .fig in the browser, though results vary with how the file was made, so treat them as a quick look rather than a guarantee.

🔄 Exporting and Converting

You rarely convert a .fig file directly, and the usual approach is to open it in its own application and export from there to a format other tools can read.

With a Figma design, you export from inside Figma, choosing frames or layers and saving them as PNG, JPG, SVG or PDF depending on whether you need a flat image, a scalable graphic or a document. This is how a design leaves the Figma world to be shared with people who do not use the tool. With a MATLAB figure, you open it in MATLAB and use the Save As option or an export command to write it out as an image such as PNG or a vector or document format like SVG or PDF, which is how a chart ends up in a paper or a slide deck. In both cases the export is a one-way copy for sharing, while the original .fig stays as the editable master. Trying to convert a .fig with a generic file converter tends not to work well, precisely because these are application-specific formats, so going through the source program is almost always the better path.

🔒 Why FIG Files Are Hard to Open and Convert

It can feel strange that a design or a chart will not simply open like a photo, and the reason comes down to how these files are built and who they were built for.

Both kinds of .fig are proprietary, meaning their internal structure is defined and controlled by one company for its own software. A Figma file is a closed container, effectively a packaged bundle of the design's data and image assets, that only Figma is meant to read. A MATLAB figure is stored as binary data in MathWorks' own format, so it is not text a person can inspect and not something a general tool knows how to draw. Under the surface a Figma file bundles the design as structured data alongside its image assets, while a MATLAB figure keeps the plot and its numbers in that compact binary shape. That design keeps every detail intact for the original program, at the cost of shutting other software out.

This is also why converting is more limited than you might hope. When you export out of either program, you get a copy in a common format, but the copy leaves some things behind. Exporting a Figma design to an image or PDF flattens it, so the clickable prototype links and the layered structure a developer would use are gone from the result. Exporting a MATLAB figure gives you a picture of the plot but drops the live data underneath, so no one can rotate a three dimensional view or read exact values from the exported file. Knowing this helps you decide what to ask for. If you only need to see the design or chart, an exported image is perfect, but if you need to edit it or work with its underlying pieces, there is no substitute for the original file in its own application.

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