The short answer
Good Chrome extension ideas come from tools people already use and don't love. This list has 50, each tied to a real listing with at least 50,000 users and a rating under 3.8 from 100 or more ratings, as of 3 October 2026. Each one is a \"build a better version of this\" idea, with the incumbent linked so you can check it yourself.
- 50 ideas, 50 real listings. No invented examples.
- Every incumbent has 50,000+ users and a rating under 3.8.
- We removed company companions, crypto wallets, sign-in helpers and security agents.
- Users are rounded by the store. Ratings are lifetime averages.
Most lists of chrome extension ideas are made up at a desk. This one was pulled from the store.
Think of it as a list of restaurants with long queues and bad reviews. Somebody should open next door.
How we built the list
If you'd rather learn the method first, read how to find Chrome extension ideas. We started with every live extension in our crawl (61,820 as of 3 October 2026, about 21% of store IDs) and kept those with:
- 50,000 to 2,000,000 users on the listing.
- A rating under 3.8 from at least 100 ratings.
- A publisher whose extensions total under 3,000,000 users, to skip giants.
- Not in the Privacy & Security category, where trust is hard to win from scratch.
Then we sorted by number of ratings and removed tools that only work with one company's product: bank plug-ins, exam proctors, crypto wallets, ID signers and the like. You can't replace those with a better standalone tool.
The 50 chrome extension ideas
The last column is days since the listing's last store update, as of 3 October 2026.
| # | Incumbent | Category | Users (store, rounded) | Rating | Days since update |
|---|---|---|---|---|---|
| 1 | Lumin | Tools | 100,000 | 3.59 from 9,027 | 1 |
| 2 | High Contrast | Functionality & UI | 300,000 | 3.47 from 5,864 | 299 |
| 3 | Weather | News & Weather | 100,000 | 3.08 from 5,742 | 12 |
| 4 | Total Adblock - Ad Blocker | Workflow & Planning | 800,000 | 3.30 from 2,917 | 125 |
| 5 | PDF Viewer | Workflow & Planning | 1,000,000 | 3.32 from 2,723 | 705 |
| 6 | Image Downloader | Art & Design | 2,000,000 | 3.68 from 2,641 | 99 |
| 7 | Lightning Autofill | Tools | 600,000 | 3.39 from 2,103 | 324 |
| 8 | Save as PDF | Tools | 300,000 | 3.17 from 2,019 | 477 |
| 9 | Screen Recorder | Workflow & Planning | 2,000,000 | 3.76 from 1,925 | 838 |
| 10 | Project Naptha | Accessibility | 100,000 | 3.58 from 1,802 | 274 |
| 11 | ScreenClip | Tools | 70,000 | 3.67 from 1,726 | 682 |
| 12 | Download Master | Tools | 100,000 | 3.79 from 1,725 | 885 |
| 13 | Video Downloader PLUS | Social Networking | 1,000,000 | 3.01 from 1,638 | 798 |
| 14 | Turbo Downloader for Instagram | Social Networking | 700,000 | 3.44 from 1,618 | 221 |
| 15 | Google Docs Dark Mode | Workflow & Planning | 900,000 | 3.36 from 1,445 | 1132 |
| 16 | Text Editor | Tools | 80,000 | 3.46 from 1,412 | 10 |
| 17 | Go Back With Backspace | Functionality & UI | 300,000 | 3.16 from 1,370 | 1047 |
| 18 | YouTube™ Dual Subtitles | Accessibility | 200,000 | 3.72 from 1,348 | 673 |
| 19 | SuperSorter | Workflow & Planning | 70,000 | 3.55 from 1,342 | 1277 |
| 20 | Advanced Font Settings | Accessibility | 400,000 | 3.74 from 1,327 | 1037 |
| 21 | YouTube NonStop | Workflow & Planning | 800,000 | 3.28 from 1,312 | 1069 |
| 22 | BLACKBOX.AI | Workflow & Planning | 300,000 | 2.66 from 1,195 | 502 |
| 23 | DXF Viewer | Workflow & Planning | 200,000 | 2.72 from 1,134 | 73 |
| 24 | Set password for your browser ( chrome lock ) | Workflow & Planning | 300,000 | 2.90 from 1,091 | 617 |
| 25 | Send to Kindle for Google Chrome™ | Workflow & Planning | 500,000 | 3.23 from 1,064 | 998 |
| 26 | Auto Clicker | Tools | 200,000 | 2.28 from 971 | 193 |
| 27 | Spell Checker for Chrome | Workflow & Planning | 100,000 | 3.46 from 902 | 344 |
| 28 | Enable Right Click for Google Chrome™ | Workflow & Planning | 500,000 | 3.50 from 842 | 1069 |
| 29 | Notepad | Workflow & Planning | 200,000 | 3.80 from 823 | 543 |
| 30 | Channel Blocker | Social Networking | 100,000 | 3.42 from 822 | 789 |
| 31 | Shortkeys (Custom Keyboard Shortcuts) | Workflow & Planning | 100,000 | 3.41 from 814 | 198 |
| 32 | PDF Editor for Chrome | Workflow & Planning | 200,000 | 2.25 from 801 | 29 |
| 33 | Tab Suspender | Functionality & UI | 100,000 | 3.72 from 760 | 136 |
| 34 | Speak Subtitles for YouTube | Workflow & Planning | 500,000 | 3.35 from 738 | 317 |
| 35 | Selection Reader (Text to Speech) | Accessibility | 200,000 | 3.65 from 730 | 26 |
| 36 | EXIF Viewer Classic | Art & Design | 80,000 | 3.47 from 643 | 855 |
| 37 | Print for Google Chrome | Tools | 100,000 | 3.67 from 625 | 296 |
| 38 | Virtual Backgrounds for Google Meet™ | Workflow & Planning | 60,000 | 3.00 from 564 | 1071 |
| 39 | Twitch VOD Downloader | Workflow & Planning | 300,000 | 3.58 from 562 | 222 |
| 40 | Who Deleted Me - See Who Unfriends You | Social Networking | 80,000 | 3.10 from 531 | 219 |
| 41 | Movie maker MovieStudio video editor | Workflow & Planning | 90,000 | 3.07 from 529 | 761 |
| 42 | Cite This For Me: Web Citer | Education | 600,000 | 3.78 from 485 | 1110 |
| 43 | Dualsub - YouTube Subtitle Translator | Education | 100,000 | 3.57 from 477 | 72 |
| 44 | Bulk Image Downloader | Tools | 60,000 | 3.54 from 462 | 949 |
| 45 | Tab Session Manager | Functionality & UI | 100,000 | 3.53 from 446 | 77 |
| 46 | Free Auto Text Expander for Google Chrome™ | Tools | 80,000 | 3.30 from 426 | 94 |
| 47 | ePub Reader for Google Chrome™ | Workflow & Planning | 300,000 | 3.22 from 417 | 57 |
| 48 | Split Screen for Google Chrome | Tools | 300,000 | 3.72 from 408 | 88 |
| 49 | Search and Replace | Workflow & Planning | 60,000 | 3.07 from 408 | 12 |
| 50 | Manga Translator | Tools | 60,000 | 3.22 from 381 | 11 |
Patterns worth noticing
Read down the table and a few groups jump out:
- PDF tools show up again and again: viewers, editors, savers, printers. People live in PDFs and keep rating their tools poorly.
- Downloaders for images, video and files. Big demand, and plenty of policy risk with video sites.
- YouTube helpers: subtitles, dual subtitles, nonstop play, channel blocking. Useful, but YouTube changes its layout often.
- Small daily utilities: notepads, text expanders, tab managers, autofill. Cheap to build, hard to charge for unless you add sync.
How to choose one
- Pick three rows in a category you actually use.
- Open each listing and read its newest low reviews.
- Check the publisher's website for a pricing page, because store listings rarely show one.
- Ask whether your paid part would need a server. If yes, that's a business. If no, it's a feature.
We're biased, but Ext Watch's Openings page runs this same filter daily, so you can re-check a row before you start. Then run the checks in how to validate an idea before writing code. For a shorter list, see the ten biggest gaps, ranked.
Open three listings from the table tonight and read their low reviews. The next idea is usually in there.
Questions people ask
What is a good Chrome extension idea?
One where many people already use a tool they rate poorly, and where your better version needs a server for its paid part.
Are these ideas free to take?
They're public listings. Build your own version from scratch, never copy another extension's code, name or brand.
How often does this list change?
The store changes daily. These numbers are fixed to 3 October 2026.
Where these numbers come from
- chromewebstore.google.comChrome Web StoreAccessed 3 Oct 2026
Part of our guide: What Is Micro SaaS? A Plain Guide With Real Examples. More in Extension ideas.
1,297 extensions tracked in PDF tools. See them all.
Real demand, weak competition, with the numbers behind each one. Updated 3 Oct 2026 from our Chrome Web Store crawl
