Do I need a license?
Yes, for nearly all use cases (like using DSSIM for, by, or on behalf of a company, government agency, or any organization).
DSSIM
Objective image quality assessment by simulating human perception.
About
About DSSIM
DSSIM compares images and produces similarity scores that line up with human perception. It extends the SSIM algorithm with multi-scale processing and color/alpha channel support.
Use it for quality control on compressed images and to evaluate compression tools and vendors objectively. It ships fast C and Rust APIs for easy integration into your pipeline.
Commercial license
Here's how it works.
We use a standard license designed to survive enterprise procurement and an order form built by Heather Meeker, an IP attorney well-known in the open source community.
- Production rights. Use DSSIM in commercial products, internal tools, and customer-facing services.
- Standardized license. Built on the lawyer-vetted Bonterms standard so legal teams recognize it and procurement should be quick.
- Enterprise-friendly. Receipts, invoices, and a license certificate to pass procurement painlessly.
- Automatic renewal. Pay with a credit card to get automatic renewal, so you won't have to think about it unless you cancel.
Purchase questions
Let's answer your questions.
What's the annual price for my org size?
- Just me
- $475
- 2–10
- $475
- 11–50
- $625
- 51–200
- $1,225
- 201–500
- $1,975
- 501–1,000
- $4,975
- 1,001–2,000
- $7,975
- 2,001–5,000
- $12,750
- 5,000+
- $25,500
What if our legal team has feedback?
The license is built on Bonterms, a lawyer-vetted standard that most enterprise legal teams have already seen and approved. Redlines are rarely needed.
What happens at renewal?
Unless cancelled first, annual licenses auto-renew. If you paid manually (e.g. a wire transfer), we will contact you before the renewal date to ensure your finance team pays on time. Please make sure your contact info is correct.
Can we try it before buying?
View the source on Github and it may be dual-licensed under a permissive copyleft license you can try for evaluation purposes before buying the commercial license your company needs.
What if I have a question that's not answered here?
If you have any other questions, please try our website's FAQ page or contact us through the contact page.
Why this matters
You're supporting software.
The vast majority of the purchase price goes to DSSIM to actually ship new features, fixes, review PRs, and answer security reports so you'll have better dependencies.
- Bug fixes & new features you'll love to see.
- Security response that's someone takes seriously.
- Long-term maintenance instead of abandonment.