Free comment exporter for Chrome

Export comments and reviews
then turn them into insight

Download comments from YouTube, Reddit, Amazon and 10 more sites to CSV, JSON or Markdown in one click. Then pull out the objections and the exact words your customers use.

No account Runs in your browser Source code on GitHub
CommentGrab dashboard listing saved comment threads from Reddit, YouTube and Hacker News, with boards and analyzed markers
13PlatformsYouTube, Reddit, Amazon and 10 more
4Export formatsCSV, JSON, Markdown, clipboard
9Kinds of insightOn your own OpenAI key
$0PriceNo account, no credits

Research from comments
without the copy-paste

Reddit threads, YouTube comments, Amazon reviews and ten more sources are where buyers say what they want in their own words. CommentGrab gets all of it into a file you can use, and then reads it for you.

CommentGrab widget loading comments on a YouTube video, 494 found so far

One-click capture. Click the widget on the page and it loads the comments and their replies, with live progress.

CommentGrab export settings with CSV, JSON, Markdown and copy, and toggles for author, scores, permalinks and thread depth

Clean exports. CSV, JSON, Markdown or the clipboard, with author, score, permalink and thread depth as columns you can switch off.

Top themes card from a CommentGrab analysis, ranking hidden pricing, team adoption and migration pain

Customer language. Your own OpenAI key turns a thread into objections, hooks, themes and the phrases people repeat.

CommentGrab widget open on a video page with 827 comments ready to export as CSV, JSON or Markdown
A saved thread in CommentGrab with CSV, JSON, Markdown and copy export buttons above the comments
CommentGrab Insights tab with a summary, a sentiment split and hooks for one thread

Capture, export, analyze
all on your device

Not a spreadsheet.
A research report.

Point your own OpenAI key at any saved thread. CommentGrab reads the comments and hands back nine kinds of insight. Every item copies in one click and every list regenerates on its own.

Nine kinds of insight from one thread

A summary, the sentiment split, hooks, objections and the phrases people repeat, laid out so you can copy them straight into an ad or a landing page.

Try it on a thread
CommentGrab board report for CRM research: summary of 459 comments and a sentiment bar
Summary

What the thread is actually about, in a paragraph.

Founders here worry most about validating ideas and finding paying customers.
Sentiment

Positive, neutral and negative, split as a bar.

30% positive · 40% neutral · 30% negative
Hooks

Scroll-stopping lines lifted from the replies.

What if the secret to success is launching before you're ready?
Ad angles

Titled ad concepts with the copy, generated only when you ask, so you only spend tokens you choose to.

Objections

The doubts your buyers hesitate on.

What if my idea isn't good enough?
Emotional triggers

What people feel, beyond what they type.

Fear of failure and uncertainty about validation
Failed solutions

What they already tried and gave up on.

Building a full product without testing the market first
Customer language

Verbatim phrases to paste into your copy.

“I feel like I'm always behind in the startup race.”
Top themes

Recurring topics, ranked by how often they come up.

Validation and feedback10Isolation and support8Launching quickly7

Examples from one real r/ycombinator thread, 40 comments, analyzed with gpt-4o-mini.

Export from 13 sites
with one widget

See every platform and what it exports

API-backed sources are fetched from the extension's background worker. The rest are read straight from the page you're on.

Stack Exchange
Q&A answers
GitHub
Issues and PRs
Bluesky
Post replies
Quora
Answers, text
Etsy
Shop reviews
Missing a site? Tell us

Free and source-available
unlike most we checked

We compared CommentGrab with seven exporters and scrapers, from ExportComments and Thunderbit to Apify. Most cap or meter the free tier, need an account, or run your exports on their servers. CommentGrab is free on all 13 platforms, and its code is public for anyone to audit.

Most of the tools we compared
  • Closed source. You can't see what they do with your data.
  • Sign up for an account before you can export.
  • Free to start, then paid or credit-gated for real use.
  • Your comments run through their servers.
  • Built for giveaways and social exports, with research as an afterthought.
  • AI insight is an upsell, if it exists at all.
CommentGrab
  • Source-available. Read every line on GitHub before you trust it.
  • No account. Install it and go.
  • Free on all 13 platforms, with no trial and no per-export fee.
  • Exports stay in your browser. AI analysis sends comments to OpenAI only when you ask.
  • 13 research sources in one widget.
  • Bring your own OpenAI key for objections, hooks and exact wording.

Your data stays local
and you can check it

There's no backend and no account. Scrapes, exports, saved threads and stats all live in your browser. The code is public, so you or your security team can read it and confirm what it does.

On your device
Saved collections
Scrape history
Usage stats
No server
chrome.storage.localon-device only
No accountnothing to sign up for
Source-availableaudit every line
Where requests go

Comments are read from the page you're on, or from that site's own public API (Reddit, Hacker News, Steam) by the extension. There's no CommentGrab server to call. The one third-party service is api.openai.com, only when you start an analysis with your own key.

Compare alternatives
sourced side by side

Pricing, limits, privacy and the complaints users post about each tool, checked against their own pages.

Stop copy-pasting comments

Install CommentGrab, open any supported thread, and export the thread in seconds. Free, source-available, no account.