Automatic tagging: the rules, the switch, and re-applying
Updated Sep 3, 2026 · 3 min read
Meshory tags models from their names and metadata during scans. What the rules cover, how to switch them off and take back what they applied, and how to run them again.
Two kinds of tags arrive without you typing anything. Rule-based tags come from a file's name, its immediate folder, and the metadata inside it: Pre-supported, Resin, the origin slicer, the filament colors in a 3MF. AI tags come from a model you connect through OpenRouter and are a separate, opt-in pass; see Connecting an OpenRouter key. This page is about the rules.
What the rules cover
The catalogue began with tabletop naming (terrain, pre-supported, 28mm, studio names) and now covers thirty more tags on four axes: part types such as bracket, holder, mount, hinge, drawer and baseplate; mechanisms such as print-in-place, threaded and gear; materials such as TPU, PETG, ABS, PLA and nylon; and two print techniques, vase mode and fuzzy skin. Matching is anchored to whole words and deliberately strict, so "lock" inside "blocked" or "stand" inside "standard" never lights up a library: a wrong rule tag costs more than a missing one, because it comes back on every rescan. Names are matched against the file and its immediate parent folder rather than the whole path, so a studio folder can name everything beneath it while a part type can't.
Files already in your library pick up tags from a widened catalogue on the next launch, as long as automatic tagging is on.
Turning it off
Automatic tagging has its own switch in Settings → Scanning. Turning it off asks one question: whether to also remove the tags it already applied, and says how many tags on how many files that is. Leave the box unticked and the existing tags stay; tick it and they go. Tags you added yourself are never touched either way.
Turning it back on doesn't retag existing files by itself. Use Re-apply auto-tags, below, to catch them up.
Re-applying and rescanning
A source's ⋯ menu has Re-apply auto-tags, which runs the rules over everything already indexed in that source. A plain Rescan replays the rules too, on top of picking up what changed on disk. Rescan from scratch goes furthest: every file is re-read, archive contents are re-indexed, 3MF colors and slicer metadata are re-derived, and automatic tags are re-applied, while your own tags, notes, collections and thumbnails are kept. It asks first, because on a large or network source it takes a while.
Each of those brings back a rule tag you removed by hand. If you took a tag off a selection (see Adding your own tags) and want it to stay off, turn automatic tagging off before the next rescan.
Pausing the pass on one source
The automatic pass also reads metadata: every loose 3MF is opened for its colors, plates and slicer. On a NAS that is the expensive part, so each source row in the sidebar can pause tag generation on its own. The pause is remembered across launches and stays in place until you resume it.
Rescans and re-applies only touch rule and metadata tags. A tag you add yourself is first-class, and a later pass never overwrites it: see Adding your own tags.