.SAFARIEXTZ File Extension

Apple Safari Extension

Developer Apple
Popularity
3.7  |  34 Votes
Category Plugin Files
Format Zip

What is a SAFARIEXTZ file?

A SAFARIEXTZ file is an extension (aka plug-in) used by the macOS version of Apple Safari. It contains a feature that can be added to the Safari web browser, such as a spell-checking tool or additional search bar. Current versions of Safari do not support SAFARIEXTZ files.

More Information

Previously, developers could use Safari's Extension Builder (Develop → Show Extension Builder) to create Safari extensions. These extension development projects were saved in folders named .safariextension. After a developer finished creating their extension, they could build the extension into a SAFARIEXTZ file.

SAFARIEXTZ files are Zip-compressed files that contain the HTML, CSS, JavaScript, and media files that comprise an extension. Each file is also digitally signed to verify its developer. To install a SAFARIEXTZ file, users typically placed the file in their [user]/​Library/​Safari/​Extensions directory.

NOTE: Apple introduced Safari extensions in Safari 5.0; the ability to install and develop extensions was enabled by default in Safari 5.0.1 to Safari 12.

How to open a SAFARIEXTZ file

Previously, you could install the extension a SAFARIEXTZ file contained by placing it in the [user]/​Library/​Safari/​Extensions directory. However, versions 12 and above of Safari do not support SAFARIEXTZ files. Instead, versions 12 and above of Safari allow users to install a curated selection of extensions by selecting Preferences... → Extensions → More Extensions....

If you want to view the constituent files a SAFARIEXT file contains, you can decompress the file with any Zip-decompression tool, such as Apple Archive Utility or 7-Zip. You may first have to change the file's extension to .zip.

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Programs that open or reference SAFARIEXTZ files

All Platforms
Rename to .zip and decompress with any Zip-decompression utility
Mac
Updated April 29, 2022

Verified by FileInfo.com

The FileInfo.com team has independently researched the Apple Safari Extension file format and Mac apps listed on this page. Our goal is 100% accuracy and we only publish information about file types that we have verified.

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