How Quillin’ actually works.
Four things live behind the quill: a check that fixes your spelling and light grammar, a tone pass that rewrites what you said in your voice (or someone else's), a translator that runs both directions, and a settings panel where you wire it all up. Here's each one, start to finish.
Check and fix what you typed.
Click the quill inside a text box, or highlight your words and right-click to "I be Quillin’ this." Either way, Quillin’ reads what you wrote and cleans up your spelling and light grammar, one correction at a time, so you see exactly what changed before you accept it. During the beta this is spelling and light grammar; deeper, full grammar checking is a later version.
Each correction is called out on its own, with a plain-English reason, so you can see what changed and why before you accept it.
Hit Apply and the fix drops straight back into the box you were typing in. Or add the word to your dictionary and Quillin’ stops flagging it for good.
Happy with the words but not the tone? That's a separate move, and it's next.
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House rules apply to every check.
Standing instructions are the rules you never want to repeat. Set them in settings and they quietly shape every rewrite and fix from then on, no reminding required.
Say it in your voice, or borrow a better one.
Fixing the spelling is the easy part. Tone decides how it lands. Highlight anything you've written and Quillin’ hands it back rewritten in every style you keep on hand, all at once, so you can pick the voice that fits the moment.
Your three go-to voices show up side by side, from buttoned-up professional to complete nonsense. Pick the one that fits.
Firing off a tense note to your boss or a client? Quillin’ won't default you to doormat. Ask for the version with a spine and it stays firm, professional, and clearly not backing down, so you say what you mean without torching the relationship.
Got a knotty sentence or short passage? Ask for ELI5 or ELI10 and Quillin’ rewrites it so a five- or ten-year-old could follow, jargon gone, meaning intact.
Close, but want it sharper? Tell Quillin’ in plain words and it revises on the spot, then you can keep nudging until it reads the way you want.
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Could we hold off a few minutes? I need some uninterrupted time to think this through.
I'll get to it right after the few minutes I already asked for. Interrupting me again won't make it happen faster.
Translate what came in, and what you send out.
If a site doesn't already translate for you, Quillin’ does. It works the same simple way in both directions: from a language you don't read, or into one you don't speak.
Read what someone wrote.
Highlight the text, right-click, and choose translate. Quillin’ tells you which language it was and gives you a clean translation into yours. No guessing, no pasting into another tab.
Send it in their language.
Write in your own words and send it out in any language on your list, or a custom one you set up in settings. Want it to land more pirate, unhinged, or chaotic? Give the translation a tone on the way out. What they do with that is their problem.
Languages you reach for often can be pinned so they're always one click away. Not on the list at all? Add it in settings and it shows up everywhere translate does.
Set it up once in settings.
Open the popup from your toolbar to reach settings. You won't live here, but it's where every choice gets made: which AI runs the show, what styles you keep close, and the rules that follow you everywhere.
Choose from Claude, GPT, Gemini, Grok, Mistral, Groq, or a local model through Ollama. Whatever you pick here is what every rewrite, check, and translation uses, and the popup remembers it.
Paste a key for each provider you use. Keys stay in your browser's local storage and go straight to the provider when you run a check. There's no Quillin’ server in the middle.
Sixteen tones ship built in and you can write your own. Pin the three you reach for daily and drag to reorder. Those are the ones that appear, one click away, on every check.
The house rules that apply to everything: reading level, spelling, what to avoid. Set them here and never repeat yourself.
Pin the languages you translate to and from most, and add custom ones that aren't on the default list so they show up wherever translate does.
Settings
• 9th-grade reading level
• Canadian spelling
That's the whole thing.
Check, translate, and your house rules, all on the AI you already pay for. No subscription needed.