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Chrome extension by Jackie(Guokai) Han · Productivity · Communication

  • Featured
  • Established publisher

A Chrome extension in Productivity · Communication with 1 000 users, a small but real audience.

No site access is declared in the manifest, so it cannot read the pages you open on its own.

What the developer says, and 2 screenshots

Loading from the Chrome Web Store. Open the listing if it does not appear.

Users
1 000
Rating
4.2 (9 ratings)
Users, last 10 days
unchanged
Rating, last 30 days
Not watched long enough to say
Version
0.0.23
Updated in the store
2023-08-25
Published
2020-12-12
Manifest
V3
Browser access
8 permissions

How it has moved

Users
unchanged since 31.08
1k · 2 readings
  1. 2026-08-311k
  2. 2026-09-091k
Rating
unchanged since 31.08
reviewsrating 4.22 · 2 readings
  1. 2026-08-31reviews9rating4.22
  2. 2026-09-09reviews9rating4.22
Users
unchanged since 31.08
1k · 2 readings
  1. 2026-08-311k
  2. 2026-09-091k
Rating
unchanged since 31.08
reviewsrating 4.22 · 2 readings
  1. 2026-08-31reviews9rating4.22
  2. 2026-09-09reviews9rating4.22

A dot marks a day the store showed a different number. Between them the line carries the last one forward: we read every listing more than once a day and record a point only when something moves. History beyond ninety days is in the app.

What it can reach

No site access is declared in the manifest, so it cannot read the pages you open on its own.

  • Sign you in with a Google account identity
  • Schedule work to run later alarms
  • Keep running while the browser is open background
Show the remaining 5
  • Tell whether you are away from the computer idle
  • Show you notifications notifications
  • Store data in your browser storage
  • Speak text out loud tts
  • Store data in your browser without the usual size limit unlimitedStorage

The full permission history for this extension

What changed recently

Nothing has moved on this listing since we started watching it.

The publisher

Jackie(Guokai) Han publishes 25 listings we track, 388k users between them. Listed website: guokai.dev.

  1. Vertical Tabs in Side Panel Jackie(Guokai) Han · Make Chrome Yours · Functionality · published 2023-06-09 100k users ★ 4.4
  2. QR Code Jackie(Guokai) Han · Productivity · Tools · published 2020-03-03 100k users ★ 4.7
  3. Tab Groups Extension Jackie(Guokai) Han · Productivity · Workflow · published 2021-04-03 100k users ★ 4.4
Show 5 more from this publisher
  1. Video Player for Local Files Jackie(Guokai) Han · Lifestyle · Entertainment · published 2021-07-18 20k users ★ 3.9
  2. Clear Site Data Jackie(Guokai) Han · Productivity · Developer · published 2020-02-13 10k users ★ 4.5
  3. Talking Clock Jackie(Guokai) Han · Productivity · Workflow · published 2020-05-31 10k users ★ 4.4
  4. Extension for Bilibili Player Jackie(Guokai) Han · Lifestyle · Entertainment · published 2019-04-02 10k users ★ 4.6
  5. Keep Computer Awake (for a While) Jackie(Guokai) Han · Productivity · Workflow · published 2020-02-05 10k users ★ 4.2

Like this one

Listings the catalog judges closest in what they say they do.

  1. Email Checker for Gmail™ Describes nearly the same job, smaller audience 29 users ★ 5.0
  2. Gmail Notifier Describes nearly the same job, smaller audience 43 users ★ 5.0
  3. Email Checker for Gmail Describes nearly the same job, smaller audience 112 users
  4. Gmail Latest Mail Checker Describes nearly the same job, smaller audience 3 users
  5. Gmail Email Checker Plus Describes nearly the same job, smaller audience 18 users ★ 5.0

The top 5 only. The full comparison, with why each one is close, is on the alternatives page; ranking a whole neighbourhood by your own criteria is in the app.

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Figures come from our own daily pass over the public Chrome Web Store listing, last read on . We publish no contact details for extension developers.