SPDX License Diff icon

SPDX License Diff

by Alan Tse · Developer Tools
FeaturedManifest V3 Free
View in Chrome Web Store Data as of 15 Oct 2026

Diff selected text against SPDX licenses

Users
195
−17 in 30 days
Rating
5.0 / 5
unchanged in 30 days
Ratings
4
0 in 30 days
Store rank
#64K
#54K among extensions
Version
0.13.1
updated 19 Jun 2026

Users

monthly, 3 years
30375720Aug 2023Apr 2025Oct 2026
Latest, 15 Oct 2026: 195 usersMove the mouse over the chart for any month

Ratings count

monthly, 3 years
135Aug 2023Apr 2025Oct 2026
Latest, 15 Oct 2026: 4 ratingsMove the mouse over the chart for any month

The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.

About SPDX License Diff

This open source extension creates a browser button in Chrome to compare selected text against the SPDX License List (https://spdx.org/licenses/). It will then show the closest matching license and provide a redline showing differences against the canonical SPDX license text. This can be useful when trying to identify an open source license or determining if it has been changed. The SPDX License List is a list of commonly found licenses and exceptions used in free and open source and other collaborative software or documentation. The purpose of the SPDX License List is to enable easy and efficient identification of such licenses and exceptions in an SPDX document, in source files or elsewhere. The SPDX License List includes a standardized short identifier, full name, vetted license text including matching guidelines markup as appropriate, and a canonical permanent URL for each license and exception. Released under GPL-3.0 (for now) Release notes: https://github.com/spdx/spdx-license-diff/releases

Growth

WindowUsersChangeRatingsRating
7 days−10−4.9%00.00
30 days−17−8.0%00.00
6 months−41−17.4%00.00
1 year−4−2.0%00.00

Chrome Web Store search rankings

Where SPDX License Diff appears when people search the store, with the 30 day change
Search phrasePosition30 days
license#10

Version history

15 versions recorded
0.13.119 Jun 2026
0.12.13 Jul 2025
0.12.01 Jul 2025
0.11.029 Jun 2025
0.10.112 Jun 2025
0.9.229 Jul 2023
0.9.18 Mar 2021
0.9.02 Mar 2021

Details

Category
Developer Tools
First seen
24 Jun 2020
Size
174 KB
Languages
en
Pricing
Free
Support
github.com
Extension ID
kfoadicmilbgnicoldjmccpaicejacdh

Permissions and risk

Low riskimpact 1, likelihood 1
Permissions
storageunlimitedStoragecontextMenusactiveTabscriptingoffscreen
Site access
*://*.spdx.org/*

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