spdx-license-diff - useful browser addon/extension for licence lookups and checks

Brian Inglis Brian.Inglis@SystematicSW.ab.ca
Fri Sep 12 15:50:02 GMT 2025


On 2025-09-12 09:33, Brian Inglis wrote:
> When packaging or adopting a package, it can be useful to lookup the official 
> SPDX licence id to add after cygport `LICENSE=`, or check if the cygport 
> official SPDX licence id `LICENSE=` is correct or needs updated.
> 
> Some licences have subtle differences from each other, and variations that are 
> difficult to distinguish, for those who do not have an eidetic memory for 
> licence texts, and a mental facility to easily perform such comparisons.
> 
> The GPL-3.0 licensed SPDX License Diff browser addon/extension for Chrome, Edge, 
> Firefox, and Opera based browsers allows you to lookup and check package licence 
> texts easily and quickly:

>      https://github.com/spdx/spdx-license-diff/releases

For those who do not like github, the tool is available to use on the SPDX site:

	https://tools.spdx.org/app/check_license/

and install from the browser addon/extension sources:

https://chromewebstore.google.com/detail/spdx-license-diff/kfoadicmilbgnicoldjmccpaicejacdh

	https://addons.mozilla.org/en-US/firefox/addon/spdx-license-diff/

-- 
Take care. Thanks, Brian Inglis              Calgary, Alberta, Canada

La perfection est atteinte                   Perfection is achieved
non pas lorsqu'il n'y a plus rien à ajouter  not when there is no more to add
mais lorsqu'il n'y a plus rien à retrancher  but when there is no more to cut
                                 -- Antoine de Saint-Exupéry


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