Spell Checker

Paste or type any text to instantly highlight misspelled words. Correction suggestions, error count, multi-language support — private and completely free.

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📖 Reading time: 0 sec
🔎 Avg word length: 0 letters
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Spelling Errors & Suggestions
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Start typing to see spelling error suggestions.
🔒 Text never leaves your browser
⚡ Checks as you type
✓ Free, no sign-up needed

FAQs About Spell Checker

How does this online spell checker work?

This tool uses a curated dictionary of the most commonly misspelled English words alongside your browser's native spell-checking engine. When you type or paste text, the tool splits it into individual words, tests each against the error dictionary, and highlights any recognised misspelling in red with a correction suggestion on hover. All checking runs locally in your browser — no text is ever transmitted to any server. For deeper analysis of which words appear most frequently in your text, pair this with our Word Frequency Counter. For total word and character counts, use the Word Counter.

Which languages does this spell checker support?

The language selector lets you check text in English (US), English (UK), French, German, Spanish, Italian, Portuguese and Dutch. The common-errors dictionary is primarily English-focused; the language selector additionally signals your chosen locale to the browser's built-in dictionary for supplemental checking. For best results, select the language that matches the content you are proofreading. If you are working with a different writing system or script, the character count in our Character Counter remains accurate regardless of language.

Why are correct words being flagged as misspelled?

Dictionaries are comprehensive but not exhaustive. Technical jargon, brand names, proper nouns, newly coined words, acronyms in lowercase, and domain-specific terms may be flagged even when correct. This is a known limitation of dictionary-based spell checking — not a bug. Ignore any highlights you are confident are correct. This tool focuses on the most common misspelling patterns that occur in everyday writing, copywriting and content production, making it the fastest first pass before deeper review. For a broader vocabulary analysis, try the Word Frequency Counter.

What is the difference between a spell checker and a grammar checker?

A spell checker evaluates individual words in isolation — whether each word exists in a dictionary, independent of context. A grammar checker analyses sentences structurally and detects contextually wrong words that are correctly spelled, such as wrong verb tense, subject-verb disagreement, or homophones like "their" versus "there." This tool is a spell checker only. For comprehensive grammatical analysis, use a dedicated grammar tool. Spell checking is still valuable as a rapid first pass to catch typos and basic misspellings before deeper review. After correcting errors, check that your content hits word targets with our Word Counter.

How many words can I check at once?

There is no hard limit. Checking runs entirely in your browser using JavaScript, so performance depends on your device. Documents of several thousand words check in under a second on any modern computer or phone. For very large documents, checking in sections makes it easier to review flagged words in context. After corrections, verify the final word and character count with our Word Counter or Character Counter. You can also check reading time with our Reading Time Calculator.

Can I use this for social media posts and email subject lines?

Yes — this is one of the most practical daily uses of a spell checker. Paste your tweet, Instagram caption, email subject, ad headline or blog title and any misspellings are highlighted immediately. For social media posts, also verify character length using our Character Counter, which shows real-time limit bars for Twitter, Instagram, LinkedIn, TikTok bio, meta descriptions and more. Getting spelling and length right before publishing eliminates corrections after the fact. If you also want to turn a headline into a URL-friendly string, use our Text to Slug converter.

Does the spell checker work offline?

Yes. Once the page has loaded, spell checking runs entirely within your browser without any internet connection. The error dictionary and JavaScript are already loaded locally. This makes the tool usable in low-connectivity environments or where sending text to an external server is not acceptable — the same privacy-first approach used by our Word Counter, Text Repeater and Lorem Ipsum Generator.

How is this different from browser spell check in a text field?

Standard browser spell check shows underlines in native input fields but provides no summary of errors, no total error count, and no list of every misspelled word found. This tool gives you all three: highlighted words in context, a count in the stats bar, and an expandable panel listing every unique error with its suggested correction. This makes it faster to track and correct issues systematically, especially in longer documents. After correcting spelling, analyse which terms you are using most with our Word Frequency Counter to ensure keyword density is appropriate for SEO purposes.

More Free Writing Tools

Convixy provides a complete suite of free text utilities alongside the Spell Checker: