Reference Viewer
A downloadable tool
Reference Viewer is an extension for Aseprite that opens a window with a reference image.
Installation
Download the reference_viewer.aseprite-extension.
In Aseprite open the Preferences dialog window by clicking on Edit>Preferences... in the top bar menu.
Go to the Extensions tab, then click on the Add Extension button and find the downloaded reference_viewer.aseprite-extension.
Usage
To open the Reference Viewer click on the View>Reference Viewer menu.
A dialog window will open. The dialog window can be resized and moved. Click Select File to open an image (aseprite will give you a warning about the script accessing an external image).
With an image opened, it is possible to:
- zoom in and out using the slider or the mouse wheel.
- click on the Fit button to fit the image into the dialog window.
- move the image by dragging it.



Known issues
Touch gestures for zooming don't work properly so, for now, they are disabled.
Every time View>Reference Viewer is clicked a new window is opened, so there can be multiple windows opened at the same time. In this particular case it might be a feature.
Currently it has only been tested on Windows. But it should also work on Linux and Mac.
License / Disclaimer
Reference Viewer is provided "AS IS" and distributed under the MIT license.
Download
Click download now to get access to the following files:
Comments
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This is exactly the kind of feature I, as well as many other people were asking for!!
Thank you! I'm glad you like it!
I still use it, the only problem I found is that higher resolution images start to lose quality if you zoom out, but its not too problematic.
Thanks for the feedback! I will take a look at it.
Update: Good and bad news, bad news are that the issue is not fixed yet. Good news are that I know how to do it (at least I believe so). What has to be done is filter the image when scaling it, but as far as I know there is no built-in filter so it must be implemented (not difficult, but it's more a matter of finding time to do it).
Please let me know if you ever do! thanks for the update