4rchive is a free Chrome extension developed by jlowens76. It falls under the category of Browsers and specifically belongs to the Add-ons & Tools subcategory. This program is designed to be used on the website archived.moe, specifically on archived 4chan threads.

The main purpose of 4rchive is to download all images, gifs, and videos within an archived 4chan thread. When you are on an archived 4chan thread on the website, this extension automatically detects and downloads all the media files present in the thread. The files are saved as a blob in the background and then converted into a zip file. Once all the files are downloaded and included in the zip file, it is automatically downloaded to your device.