mtPaint features:
- image manipulation:
- quickly transform image gamma, brightness, contrast, saturation, hue, posterize from a single dialog, and preview the results in real time;
- apply various effects such as invert, greyscale, isometric transformations, edge detect, sharpen, unsharp mask, soften, Gaussian blur, emboss, bacteria;
- use gamma correction on effects to improve the quality of various effects;
- crop images;
- resize and rescale the canvas;
- pixel art:
- edit indexed palette or RGB images;
- open and save as BMP, GIF, JPEG, LSS, PNG, TGA, TIFF, XPM, XBM files;
- extensive palette features - load, save, sort, edit, posterize, quantize, remove duplicate colors, remove unused colors, color protection, palette shifting;
- supports up to 100 layers;
- create animations by moving layers, or shifting palettes;
- create animated GIF's using Gifsicle;
- tools to shuffle pixels, flood fill, draw straight lines, smudge, clone, paste text, draw/fill rectangle/ellipses;
- interface:
- keyboard shortcuts;
- easily toggle toolbars on/off;
- horizontal and vertical split view mode;
- pixel grid for guidance at high levels of zoom;
- up to 1000 undo steps.
- scripting (from the menu select Image > Script) and command line (allows adding a script without the GUI, by using "mtpaint --cmd") mode added;
- rendering now uses multiple threads to utilize all available CPU cores;
- keyboard shortcuts can now be customized (Help > Keyboard shortcuts);
- added optional gamma correction for painting and masking (Preferences > General > Use gamma correction when painting);
- text tools now allow selection of DPI value, and alignment for multiline text;
- composite images now can have alpha transparency, when background is non-opaque;
- color transform and source selection added to blend mode options;
- multiple clone tool improvements;
- raw RGB palette files (6-bit PAL and 8-bit ACT) can now be loaded/saved via the Palette menu;
- new image format PMM (Portable MultiMap) added for interoperable storage and exchange of images;
- dimensions can now be specified when loading SVG files;
- lasso tool can be configured to shrink selection based on the selection channel - right click the tool icon;
- zoom is now up to 8000%;
- animation frames now can be saved in any suitable supported file format;
- many other changes and bug fixes.
A complete changelog can be found HERE.
Install the latest mtPaint development release in Ubuntu or Linux Mint via PPA
sudo apt install mtpaint
sudo add-apt-repository ppa:webupd8team/mtpaint
sudo apt update
sudo apt install mtpaint
sudo apt install mtpaint-handbook
The documentation can be accessed from the mtPaint Help menu.How to downgrade mtPaint to the version available in the Ubuntu repositories
sudo apt install ppa-purge
sudo ppa-purge ppa:webupd8team/mtpaint