[@jonafato](https://mastodon.social/@jonafato) [@glyph](https://mastodon.social/@glyph) Paperless-ngx might do the trick. I think it’s more targeted for mail, but I came to know about it from someone who used it to store manuals. It does OCR, the correspondant can be the product manufacturer, and it has tags. I run it in Docker on my Synology and I love it.

<https:docs.paperless-ngx.com/>