viuSimple terminal image viewer written in Rust.
Description
A small command-line application to view images from the terminal written in Rust. It is basically the front-end of viuer
. It uses either iTerm or Kitty graphics protocol, if supported. If not, lower half blocks (▄ or \u2584) are displayed instead.
Based on the value of $TERM
, viuer
decides which protocol to use. For half blocks, $COLORTERM
is inspected. If it contains either truecolor
or 24bit
, truecolor (16 million colors) will be used. If not, it will fallback to using only ansi256. A nice explanation can be found in this gist.
Features
- Native iTerm and Kitty support
- Animated GIF support
- Accept media through stdin
- Custom dimensions
- Transparency
Installation
From source (recommended)
Installation from source requires a local Rust environment.
git clone https://github.com/atanunq/viu.git
# Build & Install
cd viu/
cargo install --path .
# Use
viu img/giphy.gif
Or without cloning:
cargo install viu
Binary
A precompiled binary can be downloaded from the release page. GPG fingerprint is B195BADA40BEF20E4907A5AC628280A0217A7B0F.
Packages
MacOS
Available in brew
.
brew install viu
Arch Linux
Available in community/viu
.
pacman -S viu
NetBSD
Available in graphics/viu
.
Usage
Examples
On a Kitty terminal:
On a Mac with iTerm:
Using half blocks (Kitty protocol and tmux
do not get along):
Ctrl-C was pressed to stop the GIFs.
When viu
receives only one file and it is GIF, it will be displayed over and over until Ctrl-C is pressed. However, when couple of files are up for display the GIF will be displayed only once.
iTerm note
iTerm can handle GIFs by itself with better performance, but configuration through --once
and --frame-rate
will have no effect there.
Aspect Ratio
If no flags are supplied to viu
it will try to get the size of the terminal where it was invoked. If it succeeds it will fit the image and preserve the aspect ratio. The aspect ratio will be changed only if both options -w and -h are used together.
Command line options
USAGE:
viu [FLAGS] [OPTIONS] [FILE]...
When FILE is -, read standard input.
FLAGS:
-b, --blocks Force block output
-m, --mirror Display a mirror of the original image
-n, --name Output the name of the file before displaying
-1, --once Only loop once through the animation
-r, --recursive Recurse down directories if passed one
-s, --static Show only first frame of gif
-t, --transparent Display transparent image with transparent background
OPTIONS:
-f, --frame-rate <frames-per-second> Play gif at the given frame rate
-h, --height <height> Resize the image to a provided height
-w, --width <width> Resize the image to a provided width
ARGS:
<FILE>... The image to be displayed