Computers work with files and as a painting program, Krita works with images as the type of file it creates and manipulates.
If you have a text document, it of course contains letters, strung in the right order, so the computer loads them as coherent sentences.
This is the main data on the paint layers you make. So these are the strokes with the paint brush and look pixely up close. A multi-layer file will contain several of such layers, that get overlaid on top of each other so make the final image.
A single layer file will usually only contain raster data.
These are mathematical operations that tell the computer to draw pixels on a spot. This makes them much more scalable, because you just tell the operation to make the coordinates 4 times bigger to scale it up. Due to this vector data is much more editable, lighter, but at the same time it's also much more CPU intensive.
Stuff like the filter layers, that tells Krita to change the colors of a layer, but also transparency masks, group layer and transformation masks are saved to multi-layer files. Being able to load these depend on the software that initially made the file. So Krita can load and save groups, transparency masks and layer effects from PSD, but not load or save transform masks.
Meta Data is information like the creation date, author, description and also information like DPI.
The image size is the dimension and resolution of the canvas. Image size has direct effect file size of the Krita document. The more pixels that need to be remembered and the higher the bit depth of the color, the heavier the resulting file will be.
DPI stands for Dots per Inch, PPI stands for Pixels per Inch. In printing industry, suppose if your printer prints at 300 DPI It means it is actually putting 300 dots of colors in an area equal to an Inch. This is really important for artists, This means the number of pixels your artwork has in a relative area of an Inch.
DPI is the concern of the printer, and artists while creating artwork should keep PPI in mind. according to the PPI you have set the printers decide how large your image should be on a piece of paper.
We went over color depth in the Color Management page. What you need to understand is that Krita has image color spaces, and layer color spaces, the latter which can save memory if used right. For example, having a lineart layer in greyscale can half the memory costs.
Because there's a difference between image color space and layer color space, you can change only the image colour space inwhich will leave the layers alone. But if you want to change the color space of the file including all the layers you can do it by going to this will will convert all the layers colorspace as well.
Krita will automatically save who created the image into your image's metadata.
You can edit these things in, and for the author's information . You can switch between profiles under .
You can set the canvas background color via. This allows you to turn the background colour non-transparent and to change the color. Also useful for certain file formats which force a background color instead of transparency. PNG and JPG export use this color as the default color to fill in transparency if you do not want to export transparency.
If you come in from a program like Paint Tool Sai, then using this option, or usingin the new file options, will allow you to work in a slightly more comfortable environment, where transparency isn't depicted with checkered boxes.
There's some basic transforms available in the image menu.
But there's more options than that...
You can crop and image with the crop-tool, to cut away extra space and improve the composition.
Using, Krita resizes the image to the dimensions of the layer selected. Useful for when you paste a too large image into the layer and want to resize the canvas to the extent of this layer.
is a faster cousin to the crop tool, This helps us to resize the canvas to the dimension of any active selection. This is especially useful with right clicking the layer on the layer stack and choosing . will then crop the canvas to the selection bounding box.
is actually for layers, and will trim all layers to the size of the image, making your files lighter by getting rid of invisible data.
You can also resize the canvas via CTRL+ALT+C). The dialog box is shown below.(or
In this, will make sure the height and width stay in proportion to each other as you change them. Offset makes indicates where the new canvas space is added around the current image. You basically decide where the current image goes(if you press the left-button, it'll go to the center left, and the new canvas space will be added to the right of the image).
Another way to resize the canvas according to the need while drawing is when you scroll away from the end of the canvas, you can see an arrow appear. Clicking this will extend the canvas in that direction. You can see the arrow marked in red in the example below
allows you to resize the whole image. Also, importantly, this is where you can change the resolution or upres your image. So for instance, if you were initially working at 72 PPI to block in large shapes and colors, images, etc.. and now you want to really get in a do some detail work at 300 or 400 PPI this is where you would make the change.
Like all other dialogs where a chain link appears, when the chain is linked the aspect ration is maintained. To unlink the chain, just click on the links and the two halves will separate.
This powerful image manipulation feature lets you separate an image into its different components or channels.
This is useful for people working in print, or people manipulating game textures. There's no combine functionality, but what you can do, if using colored output, is to set two of the channels to the blending mode.
For greyscale images in the RGB space, you can use the, and blending modes, with using the red one for the red channel image, etc.
when Krita creates or opens a file, it has a copy of the file in memory, that it edits. This is part of the way how computers work: They make a copy of their file in the ram.
Thus, when saving, Krita takes it's copy and copies it over the existing file.
There's a couple of tricks you can do with saving.
|Since Krita's file format is compressed data file, in case of corrupt or broken file you can open it with archive managers and extract the contents of the layers. This will help you to recover as much as possible data from the file. On windows you need to rename it to filename.zip to open it.|
Krita's default saving format is the *.kra format. This format saves everything Krita can manipulate about an image: Layers, Filters, Assistants, Masks, Color spaces, etc. However, that's a lot of data, so *.kra files are pretty big. This doesn't make them very good for uploading to the internet. Imagine how many people's data-plans hit the limit if they only could look at *.kra files! So instead, we optimise our images for the web.
There's a few steps involved:
Save your image, upload, and show it off!
Templates are just *.kra files which are saved in a special location so it can be pulled up by Krita quickly. This is like the 'Open Existing Document and Untitled Document' but then with a nicer place in the UI.
You can make your own template file from any *.kra file, by usingin the file menu. This will add your current document as a new template, including all its properties along with the layers and layer contents.
We have the following defaults:
These templates are specifically designed for you to just get started with drawing comics. The comic template relies on a system of vectors and clones of those vector layers which automatically reflect any changes made to the vector layers. In between these two, you can draw your picture, and not fear them drawing over the panel. Use Inherit Alpha to clip the drawing by the panel.
These are templates for design and have various defaults with proper ppi at your disposal:
These have some default size for photos
These are for making 3D textures, and are between 1024, to 4092.