explaingit

posva/catimg

Analysis updated 2026-08-03 · repo last pushed 2026-04-07

1,570CAudience · developerComplexity · 2/5MaintainedSetup · easy

TLDR

Catimg is a command-line tool that displays images like PNG, JPEG, and GIF directly inside your terminal by converting pixels into colored text characters, no graphical viewer needed.

Mindmap

mindmap
  root((repo))
    What it does
      Shows images in terminal
      Converts pixels to text
      Supports PNG JPEG GIF
    Tech stack
      C language
      Unicode characters
      No external dependencies
    Use cases
      Preview photos in terminal
      Browse image assets
      Quick file checks
    Tradeoffs
      C version is faster
      Script version better colors
      Script needs ImageMagick
    Audience
      Terminal power users
      System administrators
      Developers

Code map

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filefunction / class

What do people build with it?

USE CASE 1

Preview a folder of downloaded photos without opening a graphical image viewer.

USE CASE 2

Quickly check what an image file looks like during a remote SSH session.

USE CASE 3

Browse image assets from the command line without breaking your workflow.

What is it built with?

CUnicodeImageMagick

How does it compare?

posva/catimgvercel-labs/zeropi-hole/ftl
Stars1,5701,4651,680
LanguageCCC
Last pushed2026-04-072026-07-25
MaintenanceMaintainedActive
Setup difficultyeasymoderatemoderate
Complexity2/54/53/5
Audiencedeveloperdeveloperops devops

Figures from each repo's GitHub metadata at analysis time.

How do you get it running?

Difficulty · easy Time to first run · 5min

The C version has no external dependencies, but the older script version requires ImageMagick installed separately.

Use freely for any purpose, including commercial use, as long as you keep the copyright notice.

In plain English

Catimg is a small utility that lets you display images right inside your terminal. Instead of opening a separate image viewer, you can run a quick command and see JPEG, PNG, or GIF files rendered directly in your text-based interface. The tool works by translating the pixels of an image into colored text characters. It uses Unicode characters to squeeze out higher resolution, effectively drawing the image using your terminal's text and color capabilities. You can also adjust the output resolution manually if the default doesn't look quite right. There is also an older script-based version of the tool that uses a separate program called ImageMagick to process the images, but the main C version is built to be much faster and has no external dependencies. This would appeal to developers or system administrators who spend a lot of time working in the terminal and want a quick way to preview an image without breaking their workflow. For example, if you are browsing a folder of downloaded photos or assets over a command-line connection, you can quickly check what a file looks like without launching a full graphical application. One notable tradeoff the project highlights is between speed and color accuracy. The older script version is much slower because it relies on ImageMagick, but it produces noticeably better colors. The standard C version prioritizes speed so you get near-instant results, but the colors might not be a perfect match to the original image.

Copy-paste prompts

Prompt 1
How do I install and use catimg to display a PNG image in my terminal?
Prompt 2
What is the difference between the C version and the script version of catimg, and which one should I use?
Prompt 3
How do I adjust the output resolution in catimg when the default image preview is too small or too large?
Prompt 4
How can I use catimg to preview GIF files directly in the terminal and what are the limitations?

Frequently asked questions

What is catimg?

Catimg is a command-line tool that displays images like PNG, JPEG, and GIF directly inside your terminal by converting pixels into colored text characters, no graphical viewer needed.

What language is catimg written in?

Mainly C. The stack also includes C, Unicode, ImageMagick.

Is catimg actively maintained?

Maintained — commit in last 6 months (last push 2026-04-07).

What license does catimg use?

Use freely for any purpose, including commercial use, as long as you keep the copyright notice.

How hard is catimg to set up?

Setup difficulty is rated easy, with roughly 5min to a first successful run.

Who is catimg for?

Mainly developer.

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