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Mermaid Previewer

Chrome extension by zzzzzzzephyr · Productivity · Developer

  • Featured
  • Established publisher

A Chrome extension in Productivity · Developer with 10 000 users, an established extension.

Every site you visit. This extension can read and change the content of any page you open.

What the developer says, and 5 screenshots

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

Users
10 000
Rating
4.1 (11 ratings)
Users, last 16 days
unchanged
Rating, last 30 days
Not watched long enough to say
Version
1.5.2
Updated in the store
2025-03-27
Published
2021-08-27
Manifest
V3
Browser access
4 permissions, 2 site patterns

How it has moved

Users
unchanged since 31.08
10k · 2 readings
  1. 2026-08-3110k
  2. 2026-09-1510k
Rating
unchanged since 31.08
reviewsrating 4.09 · 2 readings
  1. 2026-08-31reviews11rating4.09
  2. 2026-09-15reviews11rating4.09
Users
unchanged since 31.08
10k · 2 readings
  1. 2026-08-3110k
  2. 2026-09-1510k
Rating
unchanged since 31.08
reviewsrating 4.09 · 2 readings
  1. 2026-08-31reviews11rating4.09
  2. 2026-09-15reviews11rating4.09

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

Every site you visit. This extension can read and change the content of any page you open.

  • Manage your downloads downloads
  • Run its own code on the pages it can access scripting
  • Act on the current tab, but only after you click it activeTab
Show the remaining 1
  • Store data in your browser storage

The full permission history for this extension

What changed recently

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

The publisher

zzzzzzzephyr.

Like this one

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

  1. Mermaid Previewer (Fork) Describes nearly the same job, smaller audience 36 users
  2. Markdown Preview + Mermaid Describes nearly the same job, smaller audience 39 users
  3. Mermaid diagram renderer for GitHub Describes nearly the same job, smaller audience 689 users ★ 5.0
  4. Mermaid Preview Describes nearly the same job, smaller audience 251 users ★ 5.0
  5. Myrmaid Describes nearly the same job, smaller audience 20 users

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.

Is this your extension?

Connect it to Ext Ops Panel and see installs, uninstalls and uninstall reasons as events arrive, not as a weekly summary.

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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.