Seashore (software)
Raster graphics editor for macOS
From Wikipedia, the free encyclopedia
Seashore is a free and open-source image editor designed specifically for macOS, similar to Photoshop/GIMP, with a simpler user interface.[2][3] Seashore uses GIMP's native file format, XCF, and has support for a handful of other graphics file formats, including full support for TIFF, PNG, JPEG, JPEG2000, and HEIC and read-only support for BMP, PDF, SVG and GIF. Seashore offers fewer features than Photoshop/GIMP, but is intended to be easy to use and to run natively on macOS. It includes layers, alpha channel support, gradients and transparency effects, anti-aliased brushes, tablet support and plug-in filters.
| Seashore | |
|---|---|
| |
| Original author | Mark Pazolli |
| Developer | Robert Engels |
| Initial release | 16 January 2003 |
| Stable release | |
| Written in | Objective-C |
| Operating system | macOS |
| Type | Raster graphics editor |
| License | GPL-2.0-only |
| Website | AppStore |
| Repository | github |
After several years without maintenance, development was restarted by Robert Engels in 2017 to allow it to run on newer versions of macOS.[3] Seashore version 3.41 was released in August 2025 and is considered stable.[4]
The latest release is distributed via the Apple Mac App Store.[5][3]
Features
Seashore has many of the basic features found in graphics editing software, including:
- Full support for the XCF file format
- Reading and writing TIFF, PNG, GIF, JPEG, JPEG 2000 and HEIC file formats
- Reading BMP, PDF, SVG, PICT, and XBM file formats
- Layers and layer merging effects
- Text layers
- Individual editing of layer channels
- Transparency effects and transparency in gradients
- Arbitrary selection regions (i.e. through a lasso tool)
- Anti-aliased paint brushes
- User defined brushes and textures
- 6 gradient effects
- Graphics tablet support
- Plug-in filter effects
- Core Image Filters
- Color levels and histograms
