File indexer 

The file indexer indexes files from the file collections selected in the indexing service. For PDF files it also extracts the text content.

Excluding a file 

The extension adds an Include in Search option to the file metadata, on a new Behaviour tab. It is enabled by default. Disable it to keep a file out of the index.

File metadata, Behaviour tab with the Include in Search toggle

Exclude a file from indexing

Context menu 

A single file can be queued directly with the context menu entry Add to the Algolia search queue in the Media module.

Fields 

In addition to the standard fields, the file indexer sends:

Field Description
extension The file extension.
mimeType The MIME type of the file.
name The file name.
size The file size in bytes.
url The public URL of the file, without the leading slash for files in a local storage.
content The extracted text, only for PDF files.

The mapped metadata fields and the allowed file extensions default to:

Default configuration of the file indexer 
module.tx_typo3searchalgolia.indexer.sys_file_metadata {
    fields {
        title = title
        description = description
        alternative = alternative
        creator = author
    }

    # Comma-separated list of allowed file extensions
    extensions = pdf
}
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Indexed file content becomes searchable. The protection of non-public storages is not evaluated. Their files are indexed like public ones. Keep sensitive documents out of the indexed file collections, or exclude them individually.