File Attachments

Each topic can have one or more files of any type attached to it by using the Attach screen to upload (or download) files from your local PC. Attachments are stored under revision control: uploads are automatically backed up; all previous versions of a modified file can be retrieved.

What are attachments good for?

File Attachments can be used to archive data, or to create powerful customized groupware solutions, like file sharing and document management systems, and quick Web page authoring.

Document management system

You can use Attachments to store and retrieve documents (in any format, with associated graphics, and other media files); attach documents to topics; collaborate on documents with full revision control; distribute documents on a need-to-know basis using web and topic-level access control; create a central reference library that's easy to share with an user group spread around the world.

File sharing

For file sharing, FileAttachments on a series of topics can be used to quickly create a well-documented, categorized digital download center for all types of files: documents, graphics and other media, drivers and patches, applications; anything you can safely upload!

Web authoring

Through your web browser, you can easily upload graphics (or sound files, or anything else you want to link to on a page) and place them on a single page, or use them across a web, or site-wide.

HELP You can also add graphics - any files - directly, typically by FTP upload. This requires FTP access, and may be more convenient if you have a large number of files to load. FTP-ed files cannot be managed using browser-based attachment controls. You can use your browser to create shortcuts using Macros, like this %H% = HELP.

Attachment Names

Attachment names are stored directly in the server native file system, so filenames are sanitized to prevent use of names that would be unacceptable to the variety of platforms where Foswiki is supported. Note that the rules are different depending on whether or not your installation is configured to support international characters (UseLocale)

Default rules without international character set support.

Attachment name rules with international character set support enabled.

Uploading files

Downloading files

ALERT! There is no access control on individual attachments. If you need control over single files, create a separate topic per file and set topic-level access restrictions for each.

Moving attachment files

An attachment can be moved between topics.

Deleting attachments

Move unwanted Attachments to web Trash, topic TrashAttachment.

Linking to attached files

Securing Attachments

In most installations, attachments are not secured. Anyone can read them if they know the name of the web, topic and attachment.

To secure attachments, you have to control access to the attachments through the viewfile script, which requires a change in your web server configuration. To see how to configure Apache to do this, see


Following you will find some examples of screens and tables related to this topic and referenced throughout the previous text. The appearance of these tables might vary, depending on what skin is used on your Foswiki installation.

File attachment table

Files attached to a topic are displayed in a directory table, showing the different file names and attributes. An h means the attachment is hidden and not listed when viewing a topic in normal mode.

The file attachment table is normally displayed at the bottom of the page, or optionally, hidden and accessed when you click [Attach].

Topic attachments
I Attachment Action Size Date Who Comment
txttxt Sample.txt manage 0.1 K 22 Jul 2000 - 19:37 ProjectContributor Just a sample
gifgif Smile.gif manage 0.1 K 22 Jul 2000 - 19:38 ProjectContributor Smiley face

File attachment controls

Clicking on a [Manage] link takes you to a new page that looks a bit like this (depending on what skin is selected).

Here, you have different options:

Attach new file

Select a new local file to update attachment Sample.txt
Upload up to 10000 KB.


Describe the file so other people know what it is.


Images will be displayed, for other attachments a link will be created.

Attachments will not be shown in topic view page.

or Cancel

Related Topics: UserDocumentationCategory