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+# Interface: ZipAttributes
+
+Attributes for files added to a ZIP archive object
+
+## Hierarchy
+
+* **ZipAttributes**
+
+  ↳ [ZipOptions](zipoptions.md)
+
+  ↳ [AsyncZipOptions](asynczipoptions.md)
+
+  ↳ [ZipInputFile](zipinputfile.md)
+
+## Index
+
+### Properties
+
+* [attrs](zipattributes.md#attrs)
+* [comment](zipattributes.md#comment)
+* [extra](zipattributes.md#extra)
+* [mtime](zipattributes.md#mtime)
+* [os](zipattributes.md#os)
+
+## Properties
+
+### attrs
+
+• `Optional` **attrs**: number
+
+The file's attributes. These are traditionally somewhat complicated
+and platform-dependent, so using them is scarcely necessary. However,
+here is a representation of what this is, bit by bit:
+
+`TTTTugtrwxrwxrwx0000000000ADVSHR`
+
+TTTT = file type (rarely useful)
+
+u = setuid, g = setgid, t = sticky
+
+rwx = user permissions, rwx = group permissions, rwx = other permissions
+
+0000000000 = unused
+
+A = archive, D = directory, V = volume label, S = system file, H = hidden, R = read-only
+
+If you want to set the Unix permissions, for instance, just bit shift by 16, e.g. 0644 << 16
+
+___
+
+### comment
+
+• `Optional` **comment**: string
+
+The comment to attach to the file. This field is defined by PKZIP's APPNOTE.txt,
+section 4.4.26. The comment must be at most 65,535 bytes long UTF-8 encoded. This
+field is not read by consumer software.
+
+___
+
+### extra
+
+• `Optional` **extra**: Record\<number, Uint8Array>
+
+Extra metadata to add to the file. This field is defined by PKZIP's APPNOTE.txt,
+section 4.4.28. At most 65,535 bytes may be used in each ID. The ID must be an
+integer between 0 and 65,535, inclusive.
+
+This field is incredibly rare and almost never needed except for compliance with
+proprietary standards and software.
+
+___
+
+### mtime
+
+• `Optional` **mtime**: GzipOptions[\"mtime\"]
+
+When the file was last modified. Defaults to the current time.
+
+___
+
+### os
+
+• `Optional` **os**: number
+
+The operating system of origin for this file. The value is defined
+by PKZIP's APPNOTE.txt, section 4.4.2.2. For example, 0 (the default)
+is MS/DOS, 3 is UNIX, 19 is macOS.