Free punctuation checker

Add text to find missing, misplaced, or inconsistent punctuation. The checker fixes commas, apostrophes, semicolons, quotation marks, and sentence endings without altering your message.

Punctuated versionExample

The client’s feedback was clear; however, we couldn’t ship Friday because three tests failed: login, billing, and exports.

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Why the rewrite is better: It marks singular possession, adds the contraction apostrophe, joins two independent clauses with a semicolon, and punctuates the explanatory list.

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Works where you write

PromptDC rewrites selected text in any app, every browser, your IDE and your terminal on Mac and Windows.

One keyboard shortcut

Select text, press Cmd+Shift+E or Ctrl+Shift+E, review the result, then Replace or Copy. It never presses Enter for you.

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More before and after examples

Customer quotation

Before

Maya said the setup was simple but asked Can I invite contractors too?.

After

Maya said the setup was simple but asked, “Can I invite contractors too?”

Why the rewrite is better: The result sets off the direct question with a comma and quotation marks, capitalizes its opening, and removes the redundant period after the question mark.

Punctuation tells readers which ideas belong together, where a thought pauses, and whether a word shows possession. A misplaced comma can create a splice, while an absent apostrophe can change who owns what. PromptDC examines those relationships and produces a clean version rather than scattering generic marks through the copy. The page tool is handy for a few quick, free passes; for ongoing work, the desktop app and Chrome extension can revise highlighted text in place and let you review it before replacement.

Common questions

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