README.md

indexeddb-files

This add-on shows how to read and save files using the IndexedDB API and the subset of the "File and Directory Entries API" supported on Firefox.

What it does

The extension includes:

• a browser action which opens a popup with a list of examples
• 2 file manipulations examples (that are opened in a tab by clicking their related link)

What it shows

• Save files into IndexedDB: which shows how to read a local directory tree and save all its content into IndexedDB files, then read files from indexedDB and download them as a single zip files.
• Create temporary files: which shows how to use the MutableFile API exposed by the IndexedDB API to create mutable files and save them using the IndexedDB API.

More docs on MDN

• File and Directory Entries API:

  • https://developer.mozilla.org/en-US/docs/Web/API/File_and_Directory_Entries_API/Firefox_support
  • https://developer.mozilla.org/en-US/docs/Web/API/HTMLInputElement/webkitdirectory
  • https://developer.mozilla.org/en-US/docs/Web/API/File
  • https://developer.mozilla.org/en-US/docs/Web/API/Blob
  • https://developer.mozilla.org/en-US/docs/Web/API/FileReader

• IndexedDB API:

  • https://developer.mozilla.org/en-US/docs/Web/API/IndexedDB_API

• IndexedDB MutableFile API:

  • https://developer.mozilla.org/en-US/docs/Web/API/IDBMutableFile

• Quota limits and Storage types:

  • https://developer.mozilla.org/en-US/docs/Web/API/IndexedDB_API/Browser_storage_limits_and_eviction_criteria#Firefox_specifics
  • https://developer.mozilla.org/en-US/docs/Web/API/IndexedDB_API#Storage_limits_and_eviction_criteria

Acknowledgements

• WebExtension icon courtesy of icons8.com.