PlantUML In-Place Preview icon

PlantUML In-Place Preview

by Tetsuo Honda · Developer Tools
Manifest V3 Free
View in Chrome Web Store Data as of 16 Oct 2026

Renders PlantUML code blocks in place, entirely in your browser.

Users
53
+5 in 30 days
Rating
0.0 / 5
unchanged in 30 days
Ratings
0
0 in 30 days
Store rank
#106K
#89K among extensions
Version
2.0.5
updated 6 Sep 2026

Users

monthly, 3 years
02653Aug 2023Apr 2025Oct 2026
Latest, 16 Oct 2026: 53 usersMove the mouse over the chart for any month

Ratings count

monthly, 3 years
001Aug 2023Apr 2025Oct 2026
Latest, 16 Oct 2026: 0 ratingsMove the mouse over the chart for any month

The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.

About PlantUML In-Place Preview

PlantUML In-Place Preview renders PlantUML code blocks as diagrams on the page. Rendering runs entirely in the browser. No PlantUML server is contacted, so diagram source never leaves your machine. The extension stores no user data. It is a maintained fork of Pegmatite. The store name was Pegmatite-gitbucket through 2.0.0. From 2.0.1 the name is PlantUML In-Place Preview. The extension ID is unchanged, so existing installs keep working after update. It renders a code block when the language is uml, puml, or plantuml, and the source starts with @start. On some sites, a missing @startuml is completed for you. Hover the diagram to show two icons. One toggles between the source and the rendered diagram. The other downloads the diagram as an SVG file, always in the light theme. Source: https://github.com/Hondarer/pegmatite License: Apache License 2.0 https://github.com/Hondarer/pegmatite/blob/develop/LICENSE The packaged extension also bundles @plantuml/core (MIT; PlantUML by Arnaud Roques, compiled to JavaScript) and Viz.js 3.24.0 (MIT; Michael Daines). Viz.js includes Graphviz 14.1.1 (Eclipse Public License 1.0) and Expat 2.7.3 (MIT) in object code form. Full license texts ship in the extension package as LICENSE, LICENSE.plantuml-core, LICENSE.viz-js, LICENSE.graphviz, and LICENSE.expat. Attribution is in NOTICE: https://github.com/Hondarer/pegmatite/blob/develop/NOTICE

Growth

WindowUsersChangeRatingsRating
7 days+2+3.9%00.00
30 days+5+10.4%00.00
6 months+37+231.2%00.00
1 year+35+194.4%00.00

Version history

11 versions recorded
2.0.56 Sep 2026
2.0.431 Aug 2026
2.0.324 Aug 2026
2.0.218 Aug 2026
2.0.111 Aug 2026
2.0.08 Aug 2026
1.7.25 Aug 2026
1.7.114 May 2026

Details

Category
Developer Tools
First seen
24 Nov 2021
Size
2.0 MB
Languages
en
Pricing
Free
Privacy policy
github.com
Support
github.com
Extension ID
gkdjfofhecooaojkhbohidojebbpcene

Permissions and risk

Moderate riskimpact 3, likelihood 2
Permissions
scripting
Site access
https://github.com/*https://gist.github.com/*https://gitpitch.com/*https://gitlab.com/*https://bitbucket.org/*https://*.backlog.jp/wiki/*https://*/gitbucket/*https://*/gitlab/*http://*/gitbucket/*http://*/gitlab/*

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