---
title: "Seismic – Chrome extension stats, history and permissions"
description: "9,000 users, rated 3.67 by 3 people. Version 1.0.35, updated 2026-02-17. Requests 12 permissions."
url: "https://extensiontracker.com/extension/lfendnpddepkibhcchpdjgheapdmgelc"
---

# Seismic

Live in the Chrome Web Store.

- Users: 9,000
- Rating: 3.67 from 3 ratings
- Last checked: 2026-09-27 04:51 UTC
- Users gained in 7 days: – (needs a week of history)
- Users gained in 30 days: – (needs a month of history)
- Rank by users: #7,867 of 264,703 live extensions
- Rank in Workflow & Planning: #2,489 of 44,474

## The listing

What the Chrome Web Store shows, as of the last check.

Summary from the listing:

> Get the content you need, where you need it, instantly.

- Extension ID: `lfendnpddepkibhcchpdjgheapdmgelc`
- Developer: [Seismic](https://extensiontracker.com/developer/u7b443e959f273dd5b92e9d427dc0be6a)
- Category: [Productivity › Workflow & Planning](https://extensiontracker.com/category/productivity/workflow)
- First published: 2020-06-29
- Last updated: 2026-02-17
- Version: `1.0.35`
- Size: 34.13 KiB
- Minimum Chrome: 88
- Languages (1): English
- Support page: `https://intercom.help/lessonly/?utm_source=google&utm_medium=affiliate&utm_campaign=chrome-web-store`
- Chrome Web Store: <https://chromewebstore.google.com/detail/seismic/lfendnpddepkibhcchpdjgheapdmgelc>
- View the code or download the CRX, in CRX Viewer: <https://robwu.nl/crxviewer/?crx=https%3A%2F%2Fchromewebstore.google.com%2Fdetail%2Flfendnpddepkibhcchpdjgheapdmgelc>

## Users over time

One row per check, newest first, as shown on the Chrome Web Store.

| Checked | Users | Rating | Ratings |
| --- | ---: | ---: | ---: |
| 2026-09-27 | 9,000 | 3.67 | 3 |

## What changed

Every change found on a check, newest first.

No changes found since tracking began on 2026-09-27.

## What it can access

From the extension's manifest, in plain language.

**Every website:** it can read and change your data on all the sites you visit.

### Sites

- `https://*.knowledge-qa.seismic-dev.com/*`: knowledge-qa.seismic-dev.com and its subdomains
- `https://*.knowledge.lessonly.com/*`: knowledge.lessonly.com and its subdomains
- `https://*.knowledge.seismic.com/*`: knowledge.seismic.com and its subdomains
- `https://*.obie.ai/*`: obie.ai and its subdomains
- `https://*.staging.knowledge.lessonly.com/*`: staging.knowledge.lessonly.com and its subdomains
- `https://*.staging.obie.ai/*`: staging.obie.ai and its subdomains

### Sites where it runs scripts

- `http://*/*`: Every website
- `https://*/*`: Every website

### Browser features

- `activeTab`: The tab you're on, only after you click the extension
- `contextMenus`: Add items to the right-click menu
- `history`: Read and change your browsing history
- `scripting`: Run scripts on sites it can reach
- `storage`: Save settings and data in your browser
- `tabs`: Read the addresses and titles of your tabs

### Asked for later, if you agree

- `<all_urls>`: Every website

## About this data

Collected from the extension's public Chrome Web Store listing. It's checked every week, because it has 1,000 or more users, and again whenever a new version appears. Last checked 2026-09-27 04:51 UTC; next check around 2026-10-01.

How the data is collected: <https://extensiontracker.com/methodology>.

## Cite this page

Extension Tracker. “Seismic” (lfendnpddepkibhcchpdjgheapdmgelc). Chrome Web Store data, last checked 2026-09-27. https://extensiontracker.com/extension/lfendnpddepkibhcchpdjgheapdmgelc. Accessed 2026-09-28.

```bibtex
@misc{extensiontracker_lfendnpddepkibhcchpdjgheapdmgelc,
  title   = {Seismic (lfendnpddepkibhcchpdjgheapdmgelc)},
  author  = {{Extension Tracker}},
  year    = {2026},
  note    = {Chrome Web Store data, last checked 2026-09-27},
  url     = {https://extensiontracker.com/extension/lfendnpddepkibhcchpdjgheapdmgelc},
  urldate = {2026-09-28}
}
```

---

From Extension Tracker, a public record of the Chrome Web Store: <https://extensiontracker.com/extension/lfendnpddepkibhcchpdjgheapdmgelc>. It isn't affiliated with Google. The data is free to reuse under CC BY 4.0 (<https://creativecommons.org/licenses/by/4.0/>), crediting Extension Tracker. Extension, developer and list pages come as Markdown too: add `format=md` to the address, as in `https://extensiontracker.com/extension/{id}?format=md`.