SlimerJS logo


A scriptable browser for Web developers
+ 1

What is SlimerJS?

It allows you to manipulate a web page with an external Javascript script: opening a webpage, clicking on links, modifying the content... It is useful to do functional tests, page automation, network monitoring, screen capture etc.
SlimerJS is a tool in the Headless Browsers category of a tech stack.
SlimerJS is an open source tool with 2.9K GitHub stars and 285 GitHub forks. Here’s a link to SlimerJS's open source repository on GitHub

Who uses SlimerJS?



SlimerJS Integrations, StackStorm, Poltergeist, CasperJS, and Trails are some of the popular tools that integrate with SlimerJS. Here's a list of all 5 tools that integrate with SlimerJS.

Why developers like SlimerJS?

Here’s a list of reasons why companies and developers use SlimerJS
Top Reasons
Be the first to leave a pro

SlimerJS's Features

  • Read and write files
  • Load a web page and inspect its content
  • Act on a web page like a user: click on links, fill in form fields etc
  • Listen for network events, to do network monitoring during the load of a webpage
  • Taking screenshots of a web page.

SlimerJS Alternatives & Comparisons

What are some alternatives to SlimerJS?
PhantomJS ( is a headless WebKit scriptable with JavaScript. It is used by hundreds of developers and dozens of organizations for web-related development workflow.
Selenium automates browsers. That's it! What you do with that power is entirely up to you. Primarily, it is for automating web applications for testing purposes, but is certainly not limited to just that. Boring web-based administration tasks can (and should!) also be automated as well.
Puppeteer is a Node library which provides a high-level API to control headless Chrome over the DevTools Protocol. It can also be configured to use full (non-headless) Chrome.
CasperJS is a browser navigation scripting & testing utility written in Javascript for PhantomJS or SlimerJS.
Chrome automation made simple. Runs locally or headless on AWS Lambda.
See all alternatives