Backupery for Slack and Backupery for Slack Workspace can download uploaded files (all types of files including attachments and images) from a target workspace. By default, they are downloaded into the HTML directory:
The application also produces a zip archive that contains the data and may be uploaded back to Slack if necessary. The archive is placed into the ReadyToImport directory:
To import the archive into Slack you’ll need to use the Slack import tool. After successfully importing the data you may notice that the file uploads are not imported properly. Namely, if you try to download any of the files, you’ll get a wrong file.
The cause of the problem is that Slack requires the archive to have so-called “File Download Token” inside. The token is generated only if you run the export manually using Slack Export Tools:
Currently, it’s not possible to generate the token automatically on behalf of any third-party application.
However, we’re currently working on workarounds we can provide for you if you need to import the files. Please contact us and we’ll be happy to discuss all the possible ways to import the files.