Simp

Simp is a fast and simple GPU-accelerated image manipulation program.

Goals

• Support of as many image formats as possible.
• 60 Hz. Avoid blocking for more than 16ms.
• Flicker free redrawing.
• Smooth resizing.
• Always use GPU-acceleration where possible.
• Desktop OS support.
• Basic image manipulation.

Non Goals

• Powerful image manipulation (I am not making the next photoshop)
• Web/Mobile platform support.

Supported Platforms

OS	Support
Linux	The aur package is the only platform with all image formats enabled.
Windows	Windows does not have any optional formats enabled by default.
MacOS	MacOS compiles but is not well tested.
NetBSD	Native package available.

Supported Codecs

Format	Decoding	Encoding
PNG	✅	✅
JPEG	✅ Baseline and progressive	✅ Baseline
GIF	✅	✅
BMP	✅	✅
ICO	✅	✅
TIFF	✅	✅
WebP	✅ Converted to Rgba8	✅ Lossless only
AVIF	🚧 Only 8-bit (1)	❌
PNM	✅	❌
DDS	✅	❌
TGA	✅	✅
farbfeld	✅	✅
SVG	✅ (2)	❌
PSD	✅	❌
Raw	✅ Support from rawloader (3)	❌
HEIF/HEIC	✅ (4)	❌
JPEG XL	✅ (5)	✅
OpenEXR	✅	✅
qoi	✅	✅
hdr	✅	✅

1. Building with AVIF support requires the C library dav1d and is therefore not enabled by default.
2. SVGs are rastarized because Simp is primarily a bitmap image editor.
3. Most common cameras are supported but the colors may look weird because the standard curve may not fit all images.
4. HEIF/HEIC is only enabled on linux by default.
5. JPEG XL is only works well on linux currently.

Keybinds

Action	Input
Open image	Ctrl + O
Save as	Ctrl + S
Reload image	F5
New window	Ctrl + N
Undo	Ctrl + Z
Redo	Ctrl + Y
Copy	Ctrl + C
Paste	Ctrl + V
Resize	Ctrl + R
Rotate left	Q
Rotate right	E
Zoom in	- or Mousewheel up
Zoom out	+ or Mousewheel down
Best fit	Ctrl + B
Largest fit	Ctrl + L
Crop	Ctrl + X
Fullscreen	F11 or F
Delete image	Delete
100% - 900% Zoom	Ctrl + 1 - 9
Previous image	A or Left arrow
Next image	D or Right arrow

Runtime dependencies

The dav1d library is required for AVIF support and libheif is required for heif/heic support.

pacman -S dav1d libheif

Build dependencies

pacman -S git rust cargo-about nasm clang

Installation

Cargo

cargo install simp --locked

Arch

paru -S simp

NetBSD

A pre-compiled binary is available from the official repositories. To install it, simply run:

pkgin install simp

Latest from github

cargo install --git https://github.com/Kl4rry/simp --locked

The latest build is very likely buggy and unfinished. You can always also just grab the latest binary from actions build artifacts.

Manual

Just download the exe from the releases tab. No actual installation is required.

The name

It's an acronym (S)imple (i)mage (m)anipulation (p)rogram.