Humswoop.

What we make

Humswoop builds focused tools for everyday problems that bigger software leaves behind.

Masthead is a browser extension for Chrome and Edge that adds, changes and removes HTTP headers per site, a replacement for ModHeader. It never makes a network request.

Next, now in development: a tool that helps people open, print and convert documents saved in older file formats that modern programs no longer read.

How we work

• Your files stay on your computer. Our tools do their work locally and never upload what you open.
• One-time prices for software you keep, sold through a secure checkout.
• Plain answers from a real person when something doesn't work.