# Reading the evidence: why is a file considered orphaned? The detail view is the heart of Media Organizer — and the reason you can trust a classification without having to believe it. You open it by clicking the file name in the review view.
![Detail view of a file with metadata and the section Referenced by with the occurrences](https://docs.graup-it.de/uploads/images/gallery/2026-08/znDdoku-03-belege.png)
The detail view: the preview on the left, the metadata on the right, below them the occurrences with a direct edit link.
## The header area
Status Referenced, without a reference or in quarantine.
Classification confidence How solid the classification is. "Certain" means: the search areas relevant for this file ran through completely.
Type, size, dimensions, modified The usual key data.
SHA1 The checksum of the content. Media Organizer detects duplicates by it — and by it the deletion gate notices when a file has changed since the scan.
## "Referenced by" — the occurrences Here you see *who* uses the file. The occurrences are grouped by search area, for example: - **Articles (com\_content)** — the article the file appears in - **Modules** — module HTML, parameters or folder parameters - **Version history** — older versions of an article - **Deep scan (database)** — the safety net that searches the database broadly - **Extension profiles** — occurrences in third-party extensions Every row shows the **source** (for example "Article #3 'Welcome to your blog'"), the **table** and the **record**, the **column** as well as the **reference** found in the original text. On the right an **edit link**leads straight to that content — useful when you want to remove or correct a reference.
Several search areas may report the same occurrence. That an article provider *and* the deep scan report the same file is not a fault but two independent pieces of evidence for the same statement.
## Why a file counts as "without a reference" If none of the enabled search areas finds a reference, the file counts as unreferenced. The detail view then shows which areas were checked — and thereby also what was *not* checked. This is exactly where a second look pays off: - Are all relevant **search areas enabled**? Switching off the deep scan gives you more candidates — and less certainty. - Is there a **coverage notice**? Then knowledge about an installed extension is missing. - Might the file be used **outside Joomla**, in a newsletter, a PDF or from another website? No software can know that. That is what quarantine and the 404 monitoring are for. ## Folder references: the most important special case Some extensions do not point to a file but to a **whole folder** — a random-image module showing "all images from `images/banner`", for instance. Media Organizer treats such a folder reference as fully valid: **all** files below it count as used, even if none is named individually. Otherwise a single module would be enough to make half an image directory look orphaned by mistake. ## Derivatives Many images have automatically generated variants — thumbnails, scaled-down versions, responsive sizes. Media Organizer recognises such derivatives and treats them like the original: if the original is in use, the derivative counts as used as well. That way no thumbnail disappears whose original is still needed. ## Where to go from here - [Quarantine, restoring, deleting for good](https://docs.graup-it.de/books/media-organizer-en/page/quarantine-restoring-deleting-for-good) - [Common questions and troubleshooting](https://docs.graup-it.de/books/media-organizer-en/page/common-questions-and-troubleshooting) Applies to version 1.2.0. [Deutsche Fassung](https://docs.graup-it.de/link/64)