Browser extension
Clever Checker for Vivaldi
Every checker on the site, in the tab you are already in. Select any text, right-click, and the whole toolbox opens beside it.
Add to Vivaldi
Free, from the Chrome Web Store.
- Fix grammar as you type.
- See what reads as AI.
- Check it against the web.
- Free, and no signup.
How to use it
Select any text Right-click Clever Checker
Where to use it
Everywhere you browse
Google Docs
Gmail
Outlook
Microsoft 365
Slack
Discord
Notion- Every Website
Grammar
Corrections in place
Spelling, punctuation, and the words that sound the same and are not. Every correction comes with the sentence it belongs to, and applying one puts it straight back into the field you were writing in.
AI detection
How much reads as AI
A score for the passage and a reading for every sentence in it, so you can see where the signal actually is. It is an estimate of how the text is written, not a record of where it came from, and the panel says so.
Plagiarism
Find where it appears
We search the web for the phrases worth quoting, then read the pages back and measure what genuinely overlaps. You get the sources and the share of your text they cover, with a link to each one.
Rewriting
Rewrite it, in the page
Paraphrase, humanise or summarise what you have highlighted, then drop the result back into the box you took it from. Only when you ask it to: nothing is replaced behind your back.
Get it
Check where you write
Free to add, and it works with the account you already have. Pro lifts the daily limit across the site and the extension at once.
Add to Vivaldi
Free, from the Chrome Web Store.
FAQ
Respostas diretas
Is the extension free?
Sim. Podes usá-lo grátis até 5 vezes por dia, sem registo. O teste pago levanta o limite e desbloqueia a verificação em lote.
O meu texto é privado?
Sim. Com sessão iniciada, a tua verificação é guardada na tua conta e fica até a apagares; sem conta, o teu texto é apagado em 24 horas. Nunca o vendemos nem o usamos para treinar nada, e podes apagar qualquer verificação, ou toda a tua conta, quando quiseres.
Preciso de uma conta?
Não. Todas as ferramentas funcionam sem conta. Entra apenas se quiseres guardar o teu trabalho e gerir uma subscrição entre dispositivos.
Which browsers does it work on?
Chrome, Edge, Brave, Opera, Yandex and Vivaldi share one build; Firefox and Safari have their own. See the full list.
Can I install it manually?
Yes. The manual install for Vivaldi is a download and a few steps, and it runs the same build.