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Clean Text for AI

Remove smart quotes, broken line breaks, non-breaking spaces and tab characters from copied text before pasting into ChatGPT, Claude or Gemini.

AI language models like ChatGPT, Claude and Gemini produce better results when their input is clean and consistent. Text copied from PDFs, Word documents, websites and emails carries invisible formatting problems: curly smart quotes that confuse parsing, non-breaking spaces that interrupt tokenisation, tab characters that add structural noise, and hard line breaks that fragment sentences mid-thought. This tool fixes all of these in one pass, producing clean, model-ready text.
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Runs locally  ·  No data sent to server  ·  Free, no signup

About Clean Text for AI

AI language models like ChatGPT, Claude and Gemini produce better results when their input is clean and consistent. Text copied from PDFs, Word documents, websites and emails carries invisible formatting problems: curly smart quotes that confuse parsing, non-breaking spaces that interrupt tokenisation, tab characters that add structural noise, and hard line breaks that fragment sentences mid-thought. This tool fixes all of these in one pass, producing clean, model-ready text.

How to use Clean Text for AI

Paste the text you want to send to an AI tool into the input box and click Run. The cleaner replaces smart quotes with straight quotes, converts non-breaking spaces to regular spaces, removes tab characters, repairs end-of-line hyphenation from PDF text and merges broken mid-paragraph lines. Copy the cleaned output and paste it directly into your AI prompt.

When to use this tool

Use this before pasting content from academic papers, legal documents, PDFs, Word documents, web pages or emails into any AI tool. It is especially valuable when working with long documents or research text where formatting artifacts accumulate and silently degrade model performance.

Privacy

Cleaner input consistently produces better AI output. When the model receives complete, coherent sentences rather than fragments broken by hard returns, it understands the structure and intent of the content more accurately. All processing happens in your browser — nothing is sent to a server.

Frequently asked questions

What exactly does this tool fix?

It replaces curly smart quotes with straight quotes, converts non-breaking spaces to regular spaces, replaces tab characters with spaces, removes end-of-line PDF hyphenation, merges broken mid-paragraph lines and collapses excess whitespace.

Why do smart quotes cause problems in AI prompts?

Smart quotes are Unicode characters that look like quotes but are not the standard ASCII quote character. Some AI interfaces and APIs handle these differently, which can disrupt how the model reads structured content like JSON snippets, code or quoted instructions embedded in a prompt.

Does it change the meaning of the text?

No. The tool only modifies whitespace and punctuation characters. Words, sentences and paragraphs remain exactly as they were — just cleaner.

Should I use this before every AI prompt?

It is most useful when pasting copied text from external sources — PDFs, emails, documents. If you are typing a prompt directly from scratch, there is no need.

Does it work for non-English text?

Yes. The tool normalises Unicode whitespace and punctuation characters that appear in text of all languages, not just English.