ATA File

What are ATA files and how to open them

Are you having problems opening an ATA file or are you simply curious about its contents? We're here to explain the properties of these files and provide you with software that can open or handle your ATA files.

What is an ATA file?

An .ATA file is an Antenna Project file.

Antenna Project files store entire website projects created by the Antenna - Web Design Studio software from Julian Spencer. They hold all site structure, layout, page properties, style definitions, media linkages and publishing settings required to build and publish a website without hand-coding HTML. These files are used exclusively by the Antenna Web Design Studio program to design, edit and export web sites.

Antenna Web Design Studio generates these project files when a web designer builds a site visually - placing objects, defining layers, setting page properties, styling elements, adding media, specifying links, FTP settings and more. During development one opens, edits and previews the project in the software. When ready, the program exports the project by generating the HTML pages, images and other assets for deployment to a web host.

Internally the project file begins with a specific signature "QuickArchive.2003JulianSpencer" in ASCII at offset zero. It also contains multiple identifiable keywords and placeholders such as "%APPNAME%=ANTENNA", "PAGE_HTMLID0001", "PADDING", "FTPSETTINGS", "STYLEGLOBAL", "BACKCOLOUR", "CREATIONDATE", among others, which describe style sheets, layers, page identifiers, media paths, user settings, and publishing metadata.

How to open ATA files

Important: Different programs may use files with the ATA file extension for different purposes, so unless you are sure which format your ATA file is, you may need to try a few different programs.

While we have not verified the apps ourselves yet, our users have suggested two different ATA openers which you will find listed below.

Last updated: August 22, 2026

Various apps that use files with this extension

These apps are known to open certain types of ATA files. Remember, different programs may use ATA files for different purposes, so you may need to try out a few of them to be able to open your specific file.

Help us help others

File.org helps thousands of users every day, and we would love to hear from you if you have additional information about ATA file formats, example files, or compatible programs. Please use the links below or email us at submit@file.org to discuss further.