Caret

Caret marks spelling, grammar, punctuation and capitalization mistakes in any text box on any site — e-mail, forms, comment boxes, rich editors — and fixes them in one click.

WHAT IT CATCHES

• Spelling — a 376,000-word dictionary and 4,000 known typos, with suggestions ranked by how common each word really is. "recieved" becomes "received".

• Grammar — confused words (their/there, could of/could have), verb forms, subject-verb agreement, a/an, and the capitals people actually miss: "i saw sarah on monday" becomes "I saw Sarah on Monday", and a slipped shift key turns "DOes" back into "Does".

• Punctuation — missing apostrophes, spaces in the wrong place, doubled marks, decades that never needed an apostrophe.

• Clarity — wordy stock phrases and things said twice, offered as a suggestion rather than a scolding.

Each kind gets its own colour, so you can see at a glance whether something is a typo or a real mistake. Hover an underline for the reason and the fix, or click the count in the corner of the box to see everything at once, with a "fix all" for the unambiguous ones.

IT NEVER REWRITES YOU

Caret suggests a word, or at most a short phrase. Nothing changes until you click it, and every fix is an ordinary edit you can undo with Ctrl+Z. Your voice stays your voice.

PRIVATE BY DESIGN

The dictionary and every rule live inside the extension and run in your browser. There is no account, no sign-in, no analytics and no server. What you type is not stored, not logged and not transmitted.

One optional exception, switched off until you turn it on: add your own Anthropic API key and Caret can ask Claude for a second opinion on the field you are writing in. Even then it only runs when you ask for it, it is capped to a number of checks you choose, and password fields, card numbers and anything key-shaped are never sent.

MADE TO FIT YOU

• Switch whole categories off — turn the clarity suggestions off if you find them preachy.
• Add your own words: surnames, jargon, your company or school.
• Silence it on particular sites, like a code editor or an internal tool.
• Straight underlines, or the classic wavy ones.
• Alt+G opens the suggestion for the word at the cursor, so you never need the mouse.

Free, with nothing to buy and nothing to subscribe to.

New in 1.1.0: optional autocorrect — turn it on in Settings and Caret fixes i → I, dont → don't, and sentence capitals as you type. Off by default.