Strip messy styling, HTML tags, smart quotes, broken line breaks and hidden characters before submitting to journals or publishers.
100% private — your text is cleaned in your browser and never uploaded.Tip: turn on only the rules you need. “Strip citation markers” and “Strip bullets” are off by default so you don’t accidentally remove content you want to keep. Everything runs in your browser — your text is never uploaded.
A plain text cleaner is a free tool that strips hidden formatting out of text and returns clean, unstyled plain text. When you copy from Word, Google Docs, a PDF or a web page, you also copy invisible baggage — HTML tags, “curly” smart quotes, non-breaking spaces, zero-width characters, and broken line breaks — that can corrupt a journal submission portal, a CMS, or a code editor. This tool removes all of it in one click.
ManuscriptLab’s cleaner is built for academic writing: alongside the usual remove-formatting options, it can unwrap the hard line breaks a PDF adds, standardise punctuation, and optionally strip bullet markers and citation brackets. Everything happens locally in your browser, so your unpublished manuscript is never uploaded or stored.
Building the figure by hand is slow and error-prone. This tool makes it fast, accurate, and journal-ready.
| Rule | What it fixes | Example |
|---|---|---|
| Strip HTML / XML tags | Removes tags pasted from web pages or rich editors. | <p>text</p> → text |
| Normalize spaces | Collapses double spaces and trims line padding. | word word → word word |
| Unwrap hard line breaks | Joins lines broken mid-paragraph by PDF copy-paste. | broken line → broken line |
| Clean smart quotes & punctuation | Converts curly quotes, em-dashes and ellipses to plain forms. | “ ” ‘ ’ — … → " ' - ... |
| Strip bullets & list markers | Removes leading •, -, *, 1., a) prefixes. | • Item → Item |
| Strip citation markers | Removes inline [1], [2-4] and (Author, 2020). | result [1] → result |
| Collapse empty lines | Limits runs of blank lines to a single break. | 3+ blank lines → 1 |
| Text case conversion | Switches to Sentence case, Title Case, lower or UPPER. | choose from the dropdown |
Also removes invisible control characters: non-breaking spaces (U+00A0), zero-width spaces, and byte-order marks that break submission portals.
Most journal submission systems, plagiarism checkers, reference managers and typesetting pipelines expect clean text. Hidden formatting is a common, avoidable cause of problems at submission.
Smart quotes and em-dashes can render as garbled symbols in a portal’s text box. Non-breaking spaces and zero-width characters can throw off word counts and search-and-replace. Hard line breaks copied from a two-column PDF turn a paragraph into a ladder of short lines. Stray HTML from a web source can be rejected outright. Cleaning your text to plain UTF-8 first removes these failure points, keeps your word count accurate, and makes the file behave predictably wherever you paste it — the submission box, your reference manager, or a co-author’s editor.
Copying from Microsoft Word or a PDF is the number-one source of hidden formatting. Here’s the fastest way to fix it.
Paste the copied text into the cleaner’s left pane. Leave Strip HTML, Normalize spaces, Unwrap hard line breaks and Clean smart quotes switched on — these handle the four problems Word and PDFs cause most often: leftover styling, double spaces, mid-paragraph line breaks, and curly punctuation. Your clean text appears on the right instantly. Use the Diff view to confirm exactly what changed, then click Copy or download it as a .txt file. Because the tool outputs pure plain text, pasting it back into Word (or a submission portal) gives you a clean slate with none of the original’s hidden characters.
Live auto-clean rewrites your text as you paste — no buttons to hunt for, results in an instant.
Clears non-breaking spaces, zero-width characters and byte-order marks that silently break portals.
See exactly what was stripped or changed, word by word, so you never lose content by accident.
Turn each transformation on or off, and convert case, so the output is exactly what you want.
Copy clean text to the clipboard or export a ready-to-use .txt file in one click.
All processing runs in your browser. No sign-up, no cost, and your text is never uploaded or stored.
| Feature | What it does for you |
|---|---|
| Live auto-clean | Cleans instantly as you paste or type — toggle off for manual control. |
| 8 removal & transform rules | HTML, spaces, line breaks, smart quotes, bullets, citations, blank lines, case. |
| Dual-pane workspace | Raw input on the left, sanitised output on the right, side by side. |
| Diff view | Word-level highlighting of everything removed or changed. |
| Live statistics | Words, characters, sentences, lines, and characters saved. |
| Copy & download | Clipboard copy or .txt export of the cleaned text. |
| Case conversion | Sentence case, Title Case, lowercase or UPPERCASE. |
| Client-side privacy | Nothing is uploaded — safe for unpublished manuscripts. |
Curly “smart” quotes and em-dashes turn into odd symbols in many portals — this converts them to plain characters.
Two-column PDF copy adds a line break after every line. Unwrapping restores flowing paragraphs.
Non-breaking and zero-width spaces distort counts and search-and-replace. Removing them fixes both.
Tags copied from a web page are stripped so only readable text remains.
Multiple spaces are collapsed to one and trailing spaces removed for consistent formatting.
Clean punctuation, spaces and hidden characters before pasting into a manuscript portal.
Strip the formatting baggage that comes with copying from Microsoft Word or a PDF.
Feed checkers clean plain text so hidden characters don’t skew the analysis.
Paste tidy text into EndNote, a website, or a CMS without dragging in styling.
Convert smart quotes to straight quotes so text works in code and spreadsheets.
Reset messy, inherited formatting to a clean slate before you restyle a document.
Paste your text into the cleaner above. It automatically strips HTML tags, converts smart quotes to straight quotes, collapses extra spaces, unwraps broken line breaks and removes hidden characters — leaving clean plain text. Copy the result or download it as a .txt file.
Plain text is unstyled text with no HTML, fonts, or special characters. Paste your content into the tool and it outputs plain UTF-8 text you can copy or download. This is the format most journal portals, plagiarism checkers and code editors expect.
Yes. With “Clean smart quotes & punctuation” enabled, curly double and single quotes become straight quotes, em- and en-dashes become hyphens, and the ellipsis character becomes three periods — the plain forms that display correctly everywhere.
Yes. “Unwrap hard line breaks” joins lines that were broken mid-paragraph — the classic problem when copying from a two-column PDF — while preserving the blank lines between real paragraphs.
Completely. All cleaning happens locally in your browser using JavaScript. Your text is never uploaded, saved, or sent to any server, so it’s safe to use on unpublished or confidential manuscripts.
Only if you choose to. “Strip citation markers” is off by default. Turn it on to remove inline markers like [1] or (Author, 2020); leave it off to keep every citation exactly as written.
Yes — it’s completely free with no sign-up and no limits. You can clean as much text as you like, as often as you like.
The tool handles formatting cleanup. For a human editor to copyedit and proofread your writing to journal standard, see ManuscriptLab’s copyediting and proofreading services.
This Plain Text Cleaner processes your text locally in your browser to remove formatting and hidden characters. Always keep a copy of your original file, and review the cleaned output before submitting. Need a human to polish the writing itself? Explore our copyediting and proofreading services.
This tool clears the hidden formatting — but if you’d like a professional to copyedit your writing, standardise your style to a journal’s guidelines, and proofread the final draft, our editors do exactly that. Real human editors, no AI, matched to your subject area.
Tell us a bit about your project and we’ll get back to you within 24 hours.