什麼是 刪除重複行？
免費線上工具，快速從文字中刪除重複行，支援保留空行選項。
為什麼要使用 刪除重複行？
- Three modes: remove, keep unique, find duplicates
- Case-sensitive option
- Trim lines before processing
- Statistics: input, output, and removed line counts
如何使用 刪除重複行 — 逐步教學
1
Paste your text with duplicate lines.
2
Choose mode: Remove Duplicates, Keep Unique, or Find Duplicates.
3
Toggle case-sensitive and trim options.
4
複製或下載結果。
刪除重複行適合誰？
- data cleaning
- list deduplication
- CSV processing
- 日誌分析
刪除重複行 — 常見問題
What is the difference between Remove and Keep Unique?
"Remove Duplicates" keeps the first occurrence and removes subsequent duplicates. "Keep Unique" keeps only lines that appear exactly once, removing both duplicates and their originals.
Does it preserve line order?
Yes, the original order of lines is preserved when removing duplicates. Only subsequent duplicate occurrences are removed.
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