Keep every copy of duplicates, drop every singleton
The op tallies each item's occurrence count, then keeps every line whose count is 2+. "Every line" is literal: if `apple` appears three times, all three stay. Unique items (count = 1) are dropped entirely. Order is preserved - items stay in their original position.
This answers "what are all the repeated lines in my data?" more faithfully than either dedupe (which collapses each group to one) or Find duplicates (which emits one row per repeated value). Good for event logs where multiple copies signal real frequency.
Case sensitive (off by default) and Trim (on by default) control the compare key. Off/on: `Apple` and `apple` count together; both copies kept if the combined total is 2+. On/off: they count separately. Blank lines are always skipped.
How to use remove unique items from a list
- 1Paste your list into the input panel
- 2Output keeps every copy of items that appear 2+ times
- 3Singletons (items that appear exactly once) are dropped entirely
- 4Toggle Case sensitive and Trim to control how matches are grouped
- 5For one-row-per-value reports, use Find duplicates
Keyboard shortcuts
Drive ListShift without touching the mouse.
What this tool actually does
Count, then keep every line whose count is 2 or more.
Every copy of duplicates survives
If `apple` appears 5 times, all 5 stay in the output. This is different from Dedupe (which keeps 1) or Find duplicates (which emits each duplicated value once as a report).
Singletons dropped entirely
Items that appear exactly once are removed. The output has no one-off entries - only repeats.
Original order preserved
Kept items stay in their original positions. No sort, no reorder. Good for time-series data or event logs.
Case-insensitive by default
`Apple` and `apple` group together for counting. If the combined total is 2+, both copies survive. Turn Case sensitive on to treat case variants as distinct.
Trim-aware by default
`apple` and ` apple ` count as the same item. Turn Trim off to treat whitespace variants as distinct items - each needs its own 2+ count to qualify.
Worked example
`apple` and `banana` each appear twice - both copies kept. `orange` and `kiwi` are singletons - dropped.
apple banana apple orange banana kiwi
apple banana apple banana
Settings reference
How each option shapes the output using the sample above.
| Setting | What it does | Effect on the sample |
|---|---|---|
| Case sensitive: off (default) | `Apple` = `apple` | 4 items: `apple, banana, apple, banana` |
| Case sensitive: on | Each casing distinct, must hit 2+ on its own | If input had mixed-case duplicates, each would need its own 2+ count to qualify |
| Trim: on (default) | `apple` = ` apple` for the count | Both copies kept if the combined total is 2+ |
| Trim: off | Whitespace variants distinct | `apple` vs ` apple` each need their own 2+ count |
| All-singleton input | Every item appears exactly once | Output is empty |