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How to comment on a Google Doc

Quick answer

Select the text you want to comment on, then press Ctrl+Alt+M on Windows or ⌘+Option+M on Mac. A comment box opens in the right margin — type your note and press Ctrl+Enter to post. To let someone else comment, open Share, set their permission to Commenter, and they can leave notes without editing the document. If they don't have a Google account and you set the link to 'Anyone with the link can comment,' their comments will post but show up under a random name like 'Anonymous Hedgehog.'

Step 1

Add a comment to selected text

Highlight the word, sentence, or paragraph you want to comment on. Press Ctrl+Alt+M on Windows (⌘+Option+M on Mac) — a comment box opens on the right margin. Type your note, then press Ctrl+Enter to post. If you want to notify a specific person, type @ followed by their name or email and Google sends them a notification. You can also reach the same action via Insert → Comment in the menu bar, or by right-clicking the selection and choosing Comment. The shortcut is faster once you know it. One thing most people miss: clicking somewhere without selecting text first posts the comment anchored to a single cursor point, not a highlighted range — select the relevant text before you open the comment box, so the note is anchored to the exact passage.

Step 2

Reply to and resolve existing comments

Click any comment in the right margin to expand it and see the full thread. Type in the reply box and press Ctrl+Enter to respond. When a comment is addressed, click the checkmark (✓) to resolve it — it disappears from the active view but stays in the comment history. To see resolved comments, go to View → Comments → All Comments, then filter by Resolved. If something was resolved too soon, click the three-dot menu on the thread and choose Re-open. Keyboard shortcut to resolve: with the comment thread active (click it first), press Ctrl+Enter on Windows or ⌘+Return on Mac — same shortcut used to post a reply, so make sure the cursor is in the reply field, not the main document.

Step 3

Set up sharing so your client can comment

Open the document and click Share (top right). Under 'General access,' change 'Restricted' to 'Anyone with the link' and set the permission dropdown to Commenter — not Viewer, not Editor. Viewer means they can read but can't leave notes. Editor means they can change the document text, which you probably don't want. Commenter is the right setting for client review: they see the doc and can leave notes without touching your copy. Copy the link and send it. The critical thing designers get wrong: the default link is Viewer-only. Changing to Commenter is a deliberate second step that most people skip, then wonder why their client can't add notes.

Step 4

Comment from a phone or tablet

Open the document in the Google Docs app (iOS or Android). To add a comment, select text by long-pressing the first word and dragging the handles, then tap the blue toolbar that appears and choose Insert → Comment. Type your note, tap the arrow to post. On a phone the right-margin layout is collapsed — tap the speech bubble icon at the top right to see all open comments as a list, or tap the highlight in the document to open that specific thread. Resolving on mobile: open the comment, then tap the three-dot menu and choose Resolve. You won't see the checkmark you get on desktop, so this trips people up on first use.

The faster way

If the goal is getting a client's notes on your brief, proposal, or copy draft — and your client doesn't have a Google account, or keeps posting as Anonymous Hedgehog — the friction is real. Drop the doc into Drafty as a canvas and share the link: your client clicks the exact sentence they mean and pins a named comment right there, no Google account needed. You see who said what, can reply inline, and push a revised version on the same link. No 'see attached v2' email.

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Questions

Can I comment on a Google Doc without a Google account?
Yes, if the owner set the link to 'Anyone with the link can comment.' But your comment will show up under a randomly assigned name like 'Anonymous Hedgehog' or 'Anonymous Platypus' — there's no way to sign it with your real name without a Google account. If accountability matters (client sign-off, legal review), ask the owner to add you by email, or use a tool that allows named guest commenting without a Google login.
What is the difference between Commenter and Editor access in Google Docs?
Commenter can view and leave comments but cannot change the document text. Editor can do everything — including deleting your content. For client review, Commenter is almost always the right choice: they give feedback, you apply the changes. Only grant Editor access to collaborators who are actively co-writing the document with you.
What is the keyboard shortcut to add a comment in Google Docs?
Ctrl+Alt+M on Windows and Chromebook; ⌘+Option+M on Mac. Select the text first, then use the shortcut — it opens the comment box anchored to your selection. To post the comment once typed, press Ctrl+Enter (Windows) or ⌘+Return (Mac).
How do I let someone comment on my Google Doc without letting them edit it?
Open Share, click 'Anyone with the link,' and set the permission to Commenter (not Editor). They'll be able to leave notes in the margin without touching the document text. If you're sharing with a specific person, add their email and set their role to Commenter in the same dialog.
How do I resolve a comment in Google Docs?
Click the comment thread to select it, then click the checkmark (✓) icon at the top right of the comment card. The comment is marked resolved and disappears from the active view. You can see all resolved comments by going to View → Comments → All Comments and filtering by Resolved. To re-open one, click the three-dot menu on the resolved thread and choose Re-open.
Why can't I add comments in a Google Doc?
You most likely have Viewer access, not Commenter or Editor access. Contact the document owner and ask them to change your permission to Commenter. If you received a link and the comment tools are greyed out, the link was shared with Viewer-only access — the right link would have Commenter permission set. If you own the doc and the comment tools are still missing, check that you're not in Print Layout mode, which hides some editing controls.

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