About Auto Merge Stacks
From Factorio Mod PortalAutomatically merges fragmented item stacks in chests: e.g. 12 + 38 of the same item sitting in two slots become one stack of 50. Only touches chests that are actually fragmented, so tidy/arranged chests are left alone.
Auto Merge Stacks
A chest showing 12 + 38 of the same item across two slots? This quietly merges them back into one stack of 50.
Factorio lets the same item sit as several partial stacks in one chest — inserters drop into whatever slot is free, bots and splitters leave gaps, and you end up with fragmented inventories that waste slots and look messy. This mod walks your chests and, for any that are actually fragmented, merges the partial stacks. It only touches fragmented chests, so chests you've arranged by hand are left exactly as they are.
What it does
- Merges fragmented item stacks in a chest into full stacks (e.g.
12 + 38→ one stack of50). - Only touches fragmented chests — tidy, hand-arranged chests are never reshuffled.
- Applies to containers and logistic containers. Infinity chests, linked chests and vehicle inventories are skipped.
- Round-robin processing, so it stays light on UPS even with thousands of chests.
Settings
- Chests checked per tick — how many chests are checked each tick (round-robin). Higher = fragments merge sooner, slightly more UPS.
Notes
- Affects chests only — your character/player inventory is never touched.
- No setup: install it and it works.
Highlights
From source dataFootprint
Rated a light load on a server.
License
Published under MIT.
Last update
Its author last shipped an update 12d ago.
Auto Merge Stacks on Nxeon
From our catalogue- One-click install
- Supported on Nxeon Factorio servers. We download it from Factorio Mod Portal, place it, and restart the server.
- Server side
- Required on the server
- Server load
- light
- Smallest plan we suggest
- Factorio — 2 GB (2 GB RAM). This follows our own load rating above, not a benchmark.
- Latest build
- 0.1.1, released 2026-10-23
Recent builds
| Build | Released | Game versions | Loaders |
|---|---|---|---|
| 0.1.1 | 2026-10-23 | 2.1 | n/a |
| 0.1.0 | 2026-06-14 | 2.0 | n/a |
Run Auto Merge Stacks on a Factorio server
Pick a server or deploy a new one above; it is installed in one click.
What kind of mod it is
From the catalogQuality of life & UI
Small conveniences, tweaks and interface improvements players notice straight away.
Runs on your server
From source side supportFactorio Mod Portal lists Auto Merge Stacks as required on the server. Check its Factorio Mod Portal page to see whether players need it too.
Compatibility
- Game
- Factorio
- Runs on
- Serverrequired on the server
Verified at the source
- ✓Factorio Mod PortalOfficial listing, checked 2026-10-24Open ↗
- ✓Authored_mercer, as published on Factorio Mod Portal
- ✓LicenseMITFree
