How to use it
- Type or paste your text, or open a TXT, DOCX or PDF file.
- Pick a dictionary: American English or British English (-ise spellings).
- Click an underlined word and choose a suggestion – every instance is replaced.
- Add names and technical terms to your dictionary so they're never flagged again.
How it works
It uses Hunspell – the spelling engine inside LibreOffice, Firefox and Chrome – with the SCOWL English dictionaries (American, and British with -ise spellings). The engine runs as WebAssembly in your browser and the dictionary is a one-time download of about 190 kB, so your text never leaves your device. All-caps abbreviations (NASA, PDF), links and email addresses are skipped. Words you add to your personal dictionary are remembered in this browser.
Spelling vs. grammar
A spell checker only asks whether each word exists. In “Their is a problem”, every word is a real word, so nothing gets flagged – for mix-ups like their/there/they're or its/it's, use the grammar checker. If you write British English, switch to the British dictionary, or words like colour, organise and centre will be marked as errors.
Frequently asked questions
Is my text uploaded?
No. Spell checking runs in your browser. Your draft and personal dictionary are stored in this browser only.
Why is a real name underlined?
The dictionary covers everyday vocabulary; many names and technical terms are missing. Add them to your dictionary.
What's the difference between the dictionaries?
The British (-ise) dictionary accepts colour, centre and organise; the American one accepts color, center and organize.