Annotator
One extension, every site you study
Social feeds, AI chats, news articles and forums. The same panel on all of them, and a workspace behind it.
Works on any website
Built in on 19 sites. Open it on any other page.
Label posts in the feed
An Annotate button on every post and comment, on 13 platforms.
- Thread, quotes and media saved with it
- Media archived in case the post is deleted
- Retweets matched to the original
News sites, blogs and forums
Open it on any other page from the toolbar, or press Alt+Shift+A.
- Label the article or a highlighted passage
- Reader comments on most news sites
- Only that page is read
news-site.example/local/council-flyers
Label what chatbots say
ChatGPT, Claude, Gemini, Grok, DeepSeek and Qwen are built in.
- The prompt is saved with each answer
- Generated images and video too
- You see what's stored before a private chat is saved
Your questions, beside the post
Your project's questions open in a side panel. Use the mouse or the keyboard.
- Label a batch of comments at once with Alt+B
- Labelled posts are marked on the page
- An optional AI explanation of the post
Flag it for review
Send a post you're unsure about to an experienced annotator, with a note.
- No training in the labels needed
- The flag links back to the post
- Open to anyone with an account
reddit.com/r/…/comments
From a label to a dataset
What happens after you click Submit.
Write your own questions
Build them in the workspace, preview them, then assign them to a project.
- choice
- multi-choice
- yes/no
- text
- rating
- highlight
- co-text
chrome-extension://…/planning.html
Check every label
A lead approves each label. Disagreements show up side by side, with agreement scores.
- Review inbox
- Send back with a note
- Conflicts page
- Cohen's κ
- Fleiss' κ
- Krippendorff's α
Export when you're ready
Organize posts into projects, then download them or connect your own scripts.
- Projects
- Sub-projects
- Assignments
- Excel
- CSV
- JSON
- Scheduled exports
- API token
Faster with the keyboard
Everything is on Alt, so nothing collides with the site underneath.
- Annotate this page, on any websiteAltShiftA
- Label a batch of comments at onceAltB
- Pick an answer in the panel1–9
- Close the panelEsc
Data you can stand behind
People decide, not AI
An optional AI explanation is a second opinion. Every label is a person's, and a lead approves it.
Nothing collected while you browse
Only the posts you annotate or flag leave the page, with the context around them.
Kept even if the post is deleted
Images and video are archived when you label, so the record stays checkable.
Yours to delete
Ask for your account and your annotations to be removed at any time.
See it on the next post you read
Free. Set up in about two minutes.