Add note on costs and limitations for Azure OCR

diff --git a/docs/usage.md b/docs/usage.md
index bd638bbd19800790fb880ce96301a9ef833d0dba..131412c40cdd60fef3deb27aa0541f0010852cf0 100644 (file)
--- a/docs/usage.md
+++ b/docs/usage.md
@@ -862,6 +862,9 @@ This is of course a paid service (with a free tier) which requires an Azure acco
 Paperless-ngx in any way. When enabled, Paperless-ngx will automatically send appropriate documents to Azure for OCR processing, bypassing
 the local OCR engine. See the [configuration](configuration.md#PAPERLESS_REMOTE_OCR_ENGINE) options for more details.
 
+Additionally, when using a commercial service with this feature, consider both potential costs as well as any associated file size
+or page limitations (e.g. with a free tier).
+
 ## Architecture
 
 Paperless-ngx consists of the following components: