How to use
Run a clean first pass
- Paste markdown into the input area.
- Run the cleaner to normalize blank lines, trailing spaces, and spacing around blocks.
- Copy the cleaned output back into your docs, notes, or README.
Markdown Cleaner
Tidy spacing, trim noisy blank lines, and keep fenced code blocks intact.
Input
Paste raw markdown. Clean once. Review side-by-side.
Paste a draft to start.
Output
Review the clean copy and send it back.
0 chars
0 lines
0 blank runs changed
0 trailing spaces removed
0 invisible chars stripped
0 smart quotes converted
How to use
Paste rough markdown, clean spacing once, then compare the output before copying it back into your editor.
Examples: tidy ChatGPT exports, normalize meeting notes, or clean README drafts while keeping fenced code blocks intact.
FAQ: This cleaner runs locally and focuses on whitespace, blank lines, and trailing spaces. It does not rewrite wording or restructure your markdown document.
Quick guide
Use cases, answers, and nearby tools
Compact below-tool notes that help first-run users and repeated visitors move faster without changing the main interface.
Chinese search: Markdown 清理、Markdown 格式整理、Markdown 空白清理、移除隱形字元、去除零寬字元、彎引號轉直引號、整理 ChatGPT 輸出
Examples
Real jobs this page helps with
- README cleanupNormalize extra blank lines and spacing before committing docs updates.
- Chat-to-doc handoffTidy markdown copied from chat or issue threads before dropping it into a wiki.
FAQ
What people usually want to know
Does it rewrite my wording?
No. It cleans whitespace, strips invisible characters, and converts curly quotes to straight ones — but it never rewrites your prose, restructures headings, or reflows paragraphs.
Will fenced code blocks stay intact?
Yes. Anything inside ``` fences passes through untouched, including indentation, smart quotes that belong in test fixtures, and zero-width characters used in unicode demos.
What invisible characters does it strip?
Zero-width space (U+200B), zero-width non-joiner (U+200C), zero-width joiner (U+200D), word joiner (U+2060), and BOM/ZWNBSP (U+FEFF). Non-breaking spaces (U+00A0) are normalized to regular spaces. These come from copy-paste of PDFs, Word documents, and AI chat output and silently break diffs, search, and word counts.
快速導覽
使用情境、常見問題與相關工具
把需要的說明放在工具下方，讓第一次使用與之後回來複用都更順。
使用方式
先完成一次順手的操作
- 把 Markdown 貼進輸入區。
- 執行清理，整理多餘空行、行尾空白與段落間距。
- 把清理後的輸出複製回文件、筆記或 README。
常見情境
這個工具實際適合拿來做什麼
- README 清理提交文件更新前，先整理多餘空行與間距。
- 聊天內容轉文件把從聊天或 issue thread 複製來的 Markdown 在貼進 wiki 前先整理乾淨。
常見問題
先把常見疑問說清楚
它會改寫我的文字嗎？
不會。它只清掉空白、隱形字元，並把彎引號轉成直引號，但不會改寫你的文字、重排段落或調整標題。
程式碼區塊會被保留嗎？
會。``` 圍起來的程式碼區塊會原封不動通過，包括縮排、用於測試的彎引號、Unicode 範例中的零寬字元都會被保留。
會清掉哪些隱形字元？
零寬空白（U+200B）、零寬非接合（U+200C）、零寬接合（U+200D）、字詞接合（U+2060）以及 BOM/ZWNBSP（U+FEFF）。不換行空白（U+00A0）會還原成一般空白。這些字元常常從 PDF、Word、AI 聊天結果複製而來，會默默破壞 diff、搜尋與字數統計。