Licence and notices

pb-diff is licensed under the pb-diff licence terms, version 2026-11-09, published at https://pbdiff.com/terms. The Licence window asks you to accept them, and to approve some of their clauses specifically, when you start a trial or activate a key: see Licence.

pb-diff-ci

pb-diff-ci.exe, the pb-diff tool for build machines, needs no licence of its own. These are its usage terms, sections 4.1 to 4.4 of the pb-diff licence terms, version 2026-11-09:

4.1 A Customer with at least one active paid Subscription may obtain and use pb-diff-ci on any number of machines, including third-party machines and hosted CI runners, for its work. No separate Subscription is required for each build machine. During an active Trial, the Trial User may also use pb-diff-ci to evaluate it, subject to section 4.2; that use ends with the Trial. Continuing use is governed by section 4.3.

4.2 You may provide a copy to a service provider only as necessary to operate those environments on your behalf, without granting it independent use or distribution rights. You may not otherwise distribute pb-diff-ci, incorporate it into products offered to others, or offer access to it as a stand-alone service. Section 3.4 remains applicable.

4.3 Versions lawfully obtained during an active paid Subscription may be used without a time limit. After all your Subscriptions end, you may also obtain and use the latest version of pb-diff-ci until the end of the Support Period of the last version obtained while subscribed. Versions lawfully obtained under that continuing entitlement may also be used without a time limit. Obtaining those versions does not itself restart the contractual entitlement to obtain further versions. Mandatory security obligations remain unaffected.

4.4 A Trial alone does not grant the continuing rights in section 4.3. Continuing use remains subject to the applicable restrictions and to termination for material breach under section 15. Ordinary non-renewal is not such a breach.

Third-party notices

pb-diff takes no third-party library of its own. It carries the .NET runtime and the Windows Desktop runtime with it, so that nothing has to be installed first; both are © .NET Foundation and Contributors, under the MIT licence. The licence and the notices for the components the runtime itself includes are installed with pb-diff, under notices.

Fonts

The Help and the other documents are set in IBM Plex, which is licensed under the SIL Open Font License 1.1. Its licence is installed with the fonts.

PDF reports use Sarasa Mono SC 1.0.42, Regular weight, licensed under the SIL Open Font License 1.1. Its licence is installed beside fonts/SarasaMonoSC-Regular.ttf. PDF files embed only the glyphs they use.