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IISpeed has a new home — and your license comes with you

IISpeed's PageSpeed optimization for IIS is continuing under a new name: mod_pagespeed 1.1. It's the same optimization engine, now maintained as part of a broader release. Your existing license transfers at no cost — nothing to repurchase, nothing to lose.

What this means for you

  • 1. Your license transfers at no cost. Existing IISpeed licenses are valid for mod_pagespeed 1.1 (IIS port). No repurchase needed.
  • 2. Same optimization engine. mod_pagespeed 1.1 uses the same PageSpeed Automatic library you already rely on, with continued updates.
  • 3. No hard cutoff. IISpeed continues to work. We're not pulling the plug — but new features, bug fixes, and security patches land in 1.1 going forward.
  • 4. Path to 2.0. When you're ready, ModPageSpeed 2.0 is the next-generation rewrite — same philosophy, modern C++23 engine.
Architecture diagram showing how IISpeed integrates into the IIS request pipeline as a native HTTP module, intercepting responses to apply PageSpeed optimization filters
How IISpeed fits into the IIS request pipeline — a native HTTP module powered by the PageSpeed optimization engine.
Migration guide: IISpeed to 1.1 IISpeed documentation Get help

Get a license

New to PageSpeed optimization on IIS? Here are your options.

mod_pagespeed 1.1 — IIS

The direct successor to IISpeed. Native IIS module with the same PageSpeed Automatic engine, actively maintained. The right choice if you run IIS natively on Windows Server.

Download at modpagespeed.com

ModPageSpeed 2.0

Next-generation rewrite in modern C++23. Supports nginx, Apache, and Envoy today. For .NET environments, the same engine is available as native ASP.NET Core middleware.

Learn more at modpagespeed.com

Already have an IISpeed license? Contact us to transfer it to mod_pagespeed 1.1 at no cost.

Frequently asked questions

Do I need to buy a new license?

No. Your existing IISpeed license transfers to mod_pagespeed 1.1 at no cost. Email info@we-amp.com with your license key and we'll send your new license within one business day.

Will my IISpeed configuration still work?

mod_pagespeed 1.1 uses the same configuration directives. Most configurations will work with minimal changes. The documentation covers any differences.

When will IISpeed stop receiving updates?

There is no hard cutoff date. IISpeed continues to work, but new features and security patches are developed for mod_pagespeed 1.1 going forward. We recommend migrating when convenient.

What about ModPageSpeed 2.0?

ModPageSpeed 2.0 is a ground-up rewrite in modern C++23. It currently supports nginx, Apache, and Envoy. For .NET environments, the same optimization engine is now available as native ASP.NET Core middleware — no web server dependency required. You can also stay on 1.1.

Have a technical question? See the full FAQ for troubleshooting and configuration help.