Text Cleaner
Remove extra spaces, empty lines, and repeated lines
Text Cleaner — what it does
Tidy pasted text by collapsing extra spaces, removing empty lines and dropping duplicate lines, with each behaviour toggled independently. Text copied out of a PDF, an email or a web page arrives full of invisible debris, and cleaning it is usually the first step before anything else can be done with it.
When this tool helps
- Cleaning text copied from a PDF, where line breaks and double spaces land everywhere.
- Removing repeated lines from a log or an exported list.
- Tidying a pasted list before importing it or formatting it further.
How to use it
- Paste the text into the input.
- Choose which cleanups to apply.
- Process the text.
- Copy the cleaned result.
Accuracy, limits, and good practice
- Removing duplicate lines keeps the first occurrence, so sort first if you need a specific copy to survive.
- Collapsing spaces also flattens deliberate alignment, which matters if the text is a code block or an ASCII table.
- Run the cleaner before line sorting or list formatting — the later steps behave far more predictably on clean input.
- Enable one option at a time on unfamiliar text and check the result between passes; all three at once can remove structure you meant to keep.
Frequently asked questions
Does it remove line breaks between paragraphs?
Only the empty-line option does, and only when enabled. Leave it off to preserve paragraph separation.
Are duplicate lines matched exactly?
Yes, comparison is exact, so lines differing by a single space or capital letter both survive.
Can it fix strange characters from a PDF?
Whitespace, yes. Odd quotes and ligatures need a find and replace pass on the specific characters.
Does it remove leading indentation?
Collapsing spaces affects runs of spaces anywhere, including at line starts, so keep indented content out of that pass.
Related tools on this site
- Edit PDF Metadata — Change title, author, subject, and keywords
- Search PDF Text — Search extracted PDF text and display matching pages with snippets
- CSV Viewer — Open and inspect CSV files
Everything above runs inside this page. Text Cleaner needs no account, no upload, and no server round trip — close the tab and nothing is left behind.
文字清理器能做什麼
整理貼上的文字：收攏多餘空格、移除空行、刪掉重複行，三種行為各自可開關。從 PDF、郵件或網頁複製來的文字總是夾帶著看不見的雜物，清理它通常是後續任何處理的第一步。
什麼時候用得上
- 清理從 PDF 複製來的文字，那裡到處都是斷行與雙空格。
- 從日誌或匯出清單中移除重複行。
- 在匯入或進一步排版前，先整理貼上的清單。
使用步驟
- 把文字貼進輸入區。
- 選擇要套用的清理項目。
- 執行處理。
- 複製清理後的結果。
精確度、限制與實務建議
- 移除重複行會保留第一次出現的那筆，若需要留下特定一份，請先排序。
- 收攏空格也會壓平刻意的對齊，若文字是程式碼區塊或 ASCII 表格就要留意。
- 請在行排序或清單格式化之前先清理——後續步驟在乾淨輸入上行為可預測得多。
- 處理陌生文字時請一次只開一個選項並逐次檢查；三個同時開，可能連你想保留的結構一起清掉。
常見問題
會移除段落之間的換行嗎？
只有開啟移除空行選項時才會。想保留段落分隔就別開它。
重複行是完全相符才算嗎？
是，比對完全精確，差一個空格或一個大寫字母的兩行都會被保留。
可以修 PDF 帶來的怪字元嗎？
空白類可以。奇怪的引號與連字字形需要針對特定字元做尋找取代。
會移除行首縮排嗎？
收攏空格會影響任何位置的連續空格，包括行首，因此有縮排的內容請避開這一項。
本站相關工具
- 編輯 PDF 中繼資料 — 修改標題、作者、主題與關鍵字
- PDF 文字搜尋 — 搜尋提取出的 PDF 文字並顯示符合頁面與內容片段
- CSV 檢視器 — 開啟並檢視 CSV 內容
以上步驟全部在這個頁面內完成，文字清理器 不需要註冊、不上傳檔案、也不經過伺服器，關閉分頁後不會留下任何資料。