How to Use GitHub1s for One‑Second Code Browsing on GitHub

Today we explore a different way to read GitHub source code. Instead of clicking through files one by one or installing plugins like Octotree , this guide introduces a lightweight tool that does not require an executable.

What is GitHub1s?

GitHub1s (pronounced “one‑second”) allows you to view a repository’s code in roughly one second, providing a fast, read‑only browsing experience similar to VS Code.

How to Use It

Using GitHub1s is simple: after the standard github URL, add 1s and press Enter . For example, to read the Spring Boot source code, start with the normal repository URL:

https://github.com/spring-projects/spring-boot

Then modify it to:

https://github1s.com/spring-projects/spring-boot

The modified URL opens a VS Code‑like interface directly in the browser, as shown in the following screenshot:

The interface feels like a local VS Code environment, but it is read‑only; you cannot edit files.

GitHub1s works in mainland China as well, opening instantly without additional configuration.

Note that GitHub1s is an open‑source project, not an official GitHub product, so any claims that it is a new GitHub‑released tool are inaccurate.

Enjoy faster code browsing with GitHub1s!