Pixels to Objects
Scott Pakin
Select a bitmap and one or more other objects, and run Extensions → Raster → Pixels to Objects…. The extension will place one copy of an object at each pixel coordinate. For example, a 32×32 image will lead to objects being placed at coordinates (0, 0) through (31, 31). Options enable objects to have their stroke and/or fill color adjusted to match the corresponding image pixel; background-colored pixels to be either considered or ignored; image coordinates to be scaled up or down; and multiple objects to be assigned to coordinates either randomly or deterministically. For instance, in the banner image above, a 16×16 bitmap was selected along with four path objects of size at most 18×18. In the dialog box, "Apply color to stroke" and "Ignore background pixels" were checked. "Image coordinate scaling" was set to 18 to prevent the path objects from overlapping. And "Instantiation of multiple objects" was set to "By image coordinates" to cycle evenly through all four path objects.
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Art PNG Export
Martin Owens
Remove anti-aliasing artefacts in Inkscape 1.2 by using this extension to use the correct anti-aliasing settings, color modes and down-sampling algorithm to produce to nicest results for adjacent shapes. In SVG, adjacent shapes are rendered sequentially. When antialiasing is enabled, this process creates very small gaps between shapes which are actually touching each other. All renderers of SVG, including browsers and other art programs have this effect since it's built into the way shapes are rendered. But there is a way to get a good output, and that is to do the anti-aliasing step after rendering, by resizing the image down. Your images will be 4x smaller when using this extension so you should account for that when exporting. But should remove all anti-aliasing artefacts. If you still see gaps, your shapes may not truly be touching. This extension only works with Inkscape 1.2 raster extensions.
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inkscape-placeholder extension
Xavi
Embed image placeholders with custom height and width into Inkscape: Beautiful Image backgrounds from unsplash Random User avatars from uifaces
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ImageJ Macro Panel and other Figure extensions
Jerome
A set of Inkscape extensions which uses third party software like ImageJ, R, PyMOL and Processing to generate figure panel images from source code taken from the current rectangle or image object. Installation: Unzip to 'User Extensions' folder. History: 2023-07-28: thanks to Tim-Oliver Buchholz, directly specify panel DPIs for R and Matplotlib 2023-06-16: add matplotlib panels; fix coordinates for panel and lane labels; assessed 1.3beta compatibility. 2022-04-08: upload version compatible with both 1.1 and 1.2beta 2021-07-12: fix file separators on windows for R, PyMOL, Processing; work around call returntype for inkscape 1.2 2021-05-24: fix file separators on windows
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ImageAligner extension
matyilona
An extension fro aligning multiple images, by palcing markers over the same features. The extension has two features, drawing the markers, and aligning the images. First the markers are drawn, 3 for the "target" (top blue ones) -- theese indicate where the choosen features will end up -- and 3 for each image to be aligned -- theese indicate the same feature on all images. After the markers are positioned the ID for each image has to be set (Object -> Object properties) to name given in the ID field, and a number indicating wich set of markers are used for that image (if the id field is set to "qwert" then the image with the green markers has to have the id "qwert1", the one with the red ones "qwert2" and so on). If everything is set up, choose align objects from the dropdown maneu and click ok.
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