Download Popper.js For Bootstrap 4 [verified] May 2026

Note: Always use the UMD version of Popper.js for standard browser implementations. 2. The Built-in Solution: Bootstrap Bundles

In Bootstrap 4, the order of your scripts matters . You must place them at the end of your tag in this exact order: Popper.js Bootstrap JS download popper.js for bootstrap 4

If you want to simplify your setup, you don't actually need to download a separate Popper.js file. Bootstrap provides a "Bundle" version of its JavaScript that already includes Popper.js. Note: Always use the UMD version of Popper

For most projects, the easiest way to "download" Popper.js is to link to it via a Content Delivery Network (CDN). This avoids hosting the file yourself and can improve loading speeds. You must place them at the end of

If you are building with , you have likely encountered an error stating that Popper.js is required. Unlike Bootstrap 5, which moved away from jQuery and updated its positioning engine, Bootstrap 4 relies heavily on Popper.js v1 to handle the dynamic positioning of dropdowns, tooltips, and popovers.

Use code with caution.

Here is a comprehensive guide on how to download and install Popper.js for your Bootstrap 4 project. 1. The Quickest Method: Using a CDN