1. Go to Admin > General Settings > Attachment Settings.
   
2. Maximum attachment size (MB): Provide a numerical value to set the maximum size for the attachments.
   
3. Configure custom location to save attachments and inline media files: Provide the preferred path to save the attachments.
   
4. Validation Approach: Choose either Strict Mode or Lenient Mode.
5. File attachment filtering: Configure the file attachment types you want to allow or restrict in the Include or Exclude box. To allow all file types, choose No Restriction.
   
6. Enable Attachment Preview: Configure this option to allow preview of supported file attachments within the application.
   

Preview supported extensions: png, jpg, jpeg, ico, webp, gif, css, html, xml, htm, js, ts, xhtml, es, txt, tsv, mp4, ogv, webm, ogg, mp3, wav, csv, pdf, docx, xls, xlsx.

Only attachments with the selected extensions can be previewed. Files with other extensions must be downloaded to view.

Application must be restarted to apply the saved settings.

1. Click Save.