Now on the Chrome Web Store · Free

Rewrite anything, right where you type.

Select text in any text box, press ⌘⇧Space, and WriteProMax swaps it for a clearer, cleaner version. No copying, no pasting, no new tab.

On Windows and Linux: CtrlShiftSpace

Demo: a browser switches between Gmail, WhatsApp, LinkedIn and Slack tabs. In each, a draft is selected, the shortcut is pressed and WriteProMax rewrites it in place. For example, “hey can you send me the report tomorrow + make it professional” becomes “Hello, could you please send me the report by tomorrow?”.

Works in the text boxes you already use

  • Emails
  • Chat messages
  • Social posts
  • Comments & reviews
  • Support replies
  • Forms
  • Rich-text editors

How it works

Three steps. Zero context switching.

WriteProMax lives inside the page you're already on. You never leave your draft.

A 1 minute 22 second tour of WriteProMax: rewriting in Gmail with one shortcut, “+” instructions, undo, privacy and setup. The video has captions built in.
  1. 1

    Select

    Highlight the text you want to improve: a word, a sentence or a whole paragraph, in any text box.

  2. 2

    Press the shortcut

    Hit ⌘⇧Space on Mac or CtrlShiftSpace on Windows and Linux.

  3. 3

    Done

    Your selection is replaced in place, usually in under a second. Changed your mind? ⌘Z brings it back.

Custom instructions

Say how you want it. Just add ‘+’

By default WriteProMax fixes grammar, spelling and clarity. End your selection with + an instruction to change the tone, length or format. The whole selection, instruction included, is replaced with the result.

You select

hey can you send me the report tomorrow + make it professional

You get

Hello, could you please send me the report by tomorrow?

You select

i cannot attend the meeting tomorrow + make this suitable for my manager

You get

I’m sorry, but I won’t be able to attend tomorrow’s meeting.

You select

thanks for helping me move last weekend + make it warmer

You get

Thank you so much for helping me move last weekend. I really couldn’t have done it without you!

You select

the new dashboard is live, its faster and has dark mode + turn this into a LinkedIn post

You get

Our new dashboard is live! 🚀 It’s faster than ever and now comes with dark mode. Give it a try and let us know what you think.

Translating, reformatting, commit messages and more: see what else the + can do.

Smart about pluses. Only a final + instruction counts, so text like C++, 2 + 2 or +1 for this idea is rewritten as normal text.

Use cases

So much more than grammar

The + takes plain words, so one shortcut can translate, reformat, simplify or restyle anything you write. Click an instruction to try it in the playground.

  • Translate anything

    i will be a little late to the meeting, stuck in traffic + convert to Hindi

    मैं मीटिंग में थोड़ी देर से पहुँचूँगा, ट्रैफ़िक में फँसा हूँ।

  • Set the tone

    why is the invoice still not paid?? its been 2 weeks + firm but polite

    Just a reminder that the invoice is now two weeks overdue. Could you let me know when we can expect payment?

  • Shorter or longer

    I just wanted to reach out and let you know that unfortunately I won’t be able to make it on Friday evening + make it shorter

    Sorry, I can’t make it on Friday evening.

  • Change the format

    need to book flights, renew my passport and send the visa docs by friday + turn into a checklist

    ☐ Book flights ☐ Renew passport ☐ Send visa documents by Friday

  • Ready to post

    we hit 1000 users this month, thanks to everyone who tried the beta + tweet with emojis and hashtags

    We just hit 1,000 users this month! 🎉 Huge thanks to everyone who tried the beta 🙌 #milestone #beta

  • Say it simply

    we are leveraging cross-functional synergies to optimize our deliverables + remove the jargon

    We’re working together across teams to do better work.

  • Only the fixes

    their going to the park tomorow, me and him will join later + fix grammar only

    They’re going to the park tomorrow. He and I will join later.

  • Dev and work tools

    fixed the bug where users got logged out after refreshing the page + as a commit message

    fix(auth): keep users signed in after a page refresh

  • Just for fun

    happy birthday mom, love you so much + make it rhyme

    Happy birthday, Mom, you shine so bright, I love you so much, with all my might!

Your words, your rules. Mix and match, like + shorter and friendlier, in Hindi. WriteProMax rewrites what you selected and never answers it, so a question stays a question.

Features

A writing assistant that stays out of your way

  • Every text box

    Emails, chats, comments, forms and rich-text editors, even inside embedded frames and shadow DOM.

  • One shortcut

    ⌘⇧Space on Mac, CtrlShiftSpace elsewhere. Pick a different one any time.

  • Instructions with +

    More formal, shorter, friendlier, a LinkedIn post. Add what you want after a plus and WriteProMax follows it.

  • Keeps what matters

    Names, numbers, dates, links and technical terms stay exactly as you wrote them. Same meaning, same language.

  • Undo in one keystroke

    Not quite right? ⌘Z or CtrlZ puts your original text back, just like a normal edit.

  • Never loses your text

    If anything goes wrong, your text stays as it was and the rewrite is copied to your clipboard. Keep typing while it works and nothing is overwritten.

  • Quiet by default

    No red underlines, no pop-ups, no sidebar. WriteProMax does nothing at all until you press the shortcut.

  • Fast

    Rewrites usually land in about half a second, with a small note in the corner while it works.

Setup

Ready in about two minutes

WriteProMax runs on your own free Groq API key. There’s no account with us and no server in between: your text goes from your browser straight to Groq and back.

  1. 1

    Add WriteProMax to Chrome

    Install it from the Chrome Web Store. Its settings page opens by itself right after.

    Add to Chrome
  2. 2

    Create a free Groq account

    Sign up at console.groq.com. Groq runs the AI model that does the rewriting.

  3. 3

    Create an API key

    Open API Keys, click Create API Key and copy it. It starts with gsk_.

  4. 4

    Paste it and click “Save & test”

    WriteProMax checks the key and picks the best model it can use. Once it says Ready, select text anywhere and press ⌘⇧Space.

WriteProMax settings: paste your Groq API key and click Save & test. The status changes from “Setup needed” to “Ready” and the model is picked for you.
  • Free to use. WriteProMax is free, and Groq’s free plan has generous per-minute and daily limits. If you ever hit one, WriteProMax tells you when to try again.
  • Your key stays here. It’s saved only in this browser profile and never syncs. Websites and page scripts can’t read it, and you can remove it in settings at any time.
  • Shortcut not working? Another extension may already use it. Settings show the shortcut Chrome actually assigned, and you can change it at chrome://extensions/shortcuts.

Playground

Try it right here

These are real text fields. With WriteProMax set up, select some text and press ⌘⇧Space. Not set up yet? It takes about two minutes.

Add an instruction

Notes rich text

our new feature lets you rewrite text right where you type it. its fast, private and works almost everywhere

Tip: an instruction button adds it to the box you last clicked and selects the text for you.

Privacy

Private by design

You write emails, messages and work documents. WriteProMax is built to see as little of that as possible, and to keep none of it. Read the full privacy policy.

  • Only what you select, only when you ask. Nothing is read while you type; the text is sent only when you press the shortcut.
  • No middleman. WriteProMax has no server of its own. Your selection goes from your browser straight to Groq with your key, and Groq’s terms apply.
  • Nothing is stored. The extension never saves or logs what you write.
  • Your key stays in your browser. It never syncs, and websites and page scripts can’t read it.
  • Hands off sensitive fields. Password, one-time-code and payment fields are never read.

FAQ

Questions, answered

Is WriteProMax free?

Yes. WriteProMax is free and runs on your own Groq API key. Groq’s free plan has generous limits per minute and per day, and if you hit one, WriteProMax tells you when to try again.

Why do I need a Groq API key?

WriteProMax has no server of its own. Your key lets the extension send the text you select straight to Groq and get the rewrite back, under your own Groq account. Setup takes about two minutes.

Is my API key safe?

It’s saved only in this browser profile and never syncs. Only WriteProMax’s own settings page and background worker can read it; websites and page scripts can’t. You can remove it in settings at any time.

Which browsers does WriteProMax support?

Google Chrome, version 120 or newer.

Where does it work?

In text inputs, text areas and rich-text editors, including editors inside frames and shadow DOM. It can’t run on Chrome’s own pages, the Chrome Web Store or the built-in PDF viewer. Apps that draw text their own way, such as Google Docs, Office Online and code editors, aren’t supported yet.

What does it do if I don’t add an instruction?

It improves grammar, spelling, punctuation, sentence structure and clarity while keeping your meaning, tone and important details like names, numbers and links.

Does WriteProMax store what I write?

No. Only the text you select is sent, only when you press the shortcut, and it goes straight to Groq, not to us. The extension doesn’t save or log it, and password and payment fields are never read.

What if I don’t like the result?

Press ⌘Z (CtrlZ on Windows and Linux) to undo, or try again with an instruction such as + keep it casual.

Can I change the shortcut?

Yes. Open chrome://extensions/shortcuts in Chrome and pick any combination you like.

I pressed the shortcut and nothing happened. What now?

Click the WriteProMax icon in the toolbar. It shows Setup needed if no working key is saved, and the shortcut Chrome assigned, which may be empty if another extension already uses it. Tabs that were open before you installed work too.

Which languages does it support?

WriteProMax answers in the language you wrote in. You can also ask it to switch, for example + convert to Hindi or + translate to French.

Which AI model does it use?

openai/gpt-oss-120b on Groq by default. After you save your key, settings list the models your key can use, and you can pick another one.

How much text can I rewrite at once?

Up to 5,000 characters per selection, plus up to 300 characters for the instruction after the +.

Is there a desktop or mobile version?

Not yet. A desktop app with a system-wide shortcut and keyboards for Android and iOS are on the roadmap.

Write better, everywhere you type.

Free on the Chrome Web Store, with your own Groq API key.

Select text ⌘⇧Space done.