Product · November 1, 2026

How do you fix every mistake in a long Google Doc?

By PWA Team

Why long documents are hard to check

A long document defeats the usual habits. Reading the whole thing in one sitting means your attention fades by page four, exactly where mistakes start to slip through. A list of 80 suggestions at once is so long that people accept them all without reading, or close the list and fix nothing.

Working through a document in pages fixes both problems. A page is short enough to read with full attention, and the number of mistakes on it is small enough to look at.

A routine that works

1. Write first, check later. Fixing typos while you draft breaks your train of thought. Finish the section, then check.
2. Start at the top and take one page at a time. Check the page that's on screen before you scroll on.
3. Fix the clear mistakes in one go. Typos, missing letters and broken endings don't need a decision.
4. Read the rest one by one. Suggestions that change a word or a phrase can change your meaning, so look at each.
5. Finish with a read-through. A checker catches mistakes in sentences. It doesn't tell you whether the argument holds or the numbers match.

How it works in Private Writing Assistant

Google Docs draws its pages differently from a normal text box, so the extension checks a document page by page as you scroll. Each page on screen gets its own badge in its corner, showing the number of mistakes on that page only.

Click an underlined word to see the suggestion, then click it to apply it or dismiss it. To fix everything on a page at once, hover that page's badge and press Fix all. To fix only part of a page, such as one paragraph, select it and press “Fix errors”.

Because each badge counts one page, the numbers stay small and readable. You always know how much is left on the page in front of you, and Fix all never reaches into pages you haven't looked at.

Which suggestions to accept in one go

Fix all is safe for mistakes that have one correct answer, and that's most of what a checker finds: a doubled word, a missing letter, a word whose ending doesn't fit the sentence. Before you press it, glance at the underlines on the page. If one of them is a name, a product term or a word in another language that you wrote on purpose, dismiss that one first.

Anything that changes wording rather than spelling deserves a look of its own. Fix all saves you clicks, not judgment.

Documents in more than one language

Long documents often mix languages: an English report with a German quote, a Spanish contract with English definitions. Private Writing Assistant recognizes the language of each sentence and checks it in that language, so a Fix all doesn't turn your quote into English. Our post on checking two languages in one message explains how.

What stays on your computer

Long documents are often the ones you'd least like to share: reports, proposals, contracts. The extension checks them with Chrome Built-in AI on your computer, and the text is never sent to us or to an AI service. How it works walks through what happens to your text.