Growth signalNo paid features detectedHigh-risk permissions

Mermaid Preview

Preview Markdown and Mermaid files, support LaTeX math equations rendering.

Users199Current public install base

Rating5.0Store average score

Reviews1Public review volume

Manifest versionV3Extension platform version

7-day growth+8Net users gained this week

7-day growth rate+4.19%Relative weekly velocity

Preview

Mermaid Preview Media preview

3 assets

Trend

User growth trend

Review user movement across collected snapshots.

User Growth Over Time

Rating trend

7-day rating trend

View collected rating snapshots from the latest 7-day window to assess rating stability.

7-day rating change

Start

5.00

Latest

5.00

7-day rating change

0.00

2026年7月15日2026年7月21日

Growth overview

Daily, weekly, and monthly growth

Compare 1-day, 7-day, and 30-day net growth and growth rate.

1-day growthGrowing

+4+2.05%

7-day growthGrowing

+8+4.19%

30-day growthGrowing

+17+9.34%

Technical snapshot

Version, languages, and crawl freshness

Review publication date, version, supported languages, and crawl timestamps.

Version1.4.2

ManifestV3

Size1.43MiB

Languages1English (United States)

Published--

Store updated--

Last crawled--

Overview

Product summary

Review the store description, core capabilities, and common use cases.

Mermaid Preview is a powerful extension that instantly renders Markdown and Mermaid diagram files in a beautiful, user-friendly interface. Simply drag and drop your .md or .mermaid files, or paste a URL to preview documentation with formatted text, tables, code blocks, and stunning flowcharts, sequence diagrams, Gantt charts, and more. Features include dark/light theme toggle for comfortable viewing, export functionality to save Mermaid diagrams as high-quality PNG, JPEG, or SVG images, and support for both local files and remote URLs. Perfect for developers, technical writers, and anyone working with technical documentation or creating visual diagrams. The extension uses the latest versions of Mermaid.js and Marked.js libraries to ensure full compatibility with modern syntax and features. Support print markdown or mermaid file.

Reviews

Recent review snapshot

Inspect the latest comments and rating distribution.

Store average score5.0Chrome Web Store aggregate rating, including ratings without synced review text

Synced text average--Average computed only from synced review bodies below

Reviews with text0Synced review bodies

Total ratings / reviews1Chrome Web Store public rating/review count

Store average score: 5.0. The bars below are calculated from synced review text only, so they may be empty for extensions that have public ratings but no synced comments yet.

5★

4★

3★

2★

1★

No synced review text is available yet.

Similar and related extensions

Review related products from the Chrome Web Store detail page.

Mermaid Previewer Sidebar

Tools

Instantly preview Mermaid diagrams in a Chrome sidebar. Ideal for ChatGPT, markdown notes, and flowchart editing.

Local Markdown Viewer

Tools

PaidConfidence 55

Preview local Markdown files with beautiful GitHub-style rendering

MarkView: Markdown Viewer with Mermaid Diagrams, Math & Export

Tools

Likely PaidConfidence 92Platform Stripe

Markdown viewer with syntax highlighting, Mermaid diagrams, KaTeX math, TOC, DOCX/HTML export, folder browser & themes.

DOT/Mermaid Viewer

Developer Tools

A graph drawing and checking tool that supports DOT language and Mermaid notation. It can also output as an image.

Mermaid Render

Workflow & Planning

Browser extension to render Mermaid diagrams in web pages.

docu.md Markdown Viewer

Tools

FreemiumConfidence 64

Markdown to perfect Word — Mermaid, PlantUML, Vega, drawio, Infographic, Graphviz, LaTeX, code highlight, local processing.

AI product read

Preview and render Markdown and Mermaid diagram files locally in the browser.

Developers and technical writers need a quick way to visualize Markdown documents and Mermaid diagrams (flowcharts, sequence diagrams, Gantt charts, etc.) without leaving their browser or setting up a local server.

User clicks extension icon -> Opens preview tab -> User drags/drops a .md or .mermaid file or pastes a URL -> Extension loads local libraries (Marked.js, Mermaid.js, MathJax) -> Renders content in the preview tab -> User can export rendered diagrams as images.

Target users: Developers / Technical writers / Documentation authors / Anyone creating visual diagrams or Markdown content

The extension uses external CDNs (jsdelivr.net) for some libraries, but the core rendering happens locally. The analysis assumes these CDN links don't require authentication for the libraries used.
The 'buymeacoffee' link suggests the developer accepts donations, but this doesn't constitute a paid feature gate.

Monetization

No paid features detected

The extension is free. There are no paywalls, subscription checks, or premium feature gates in the code. The only external link is to 'buymeacoffee.com' for voluntary donations, which is not a payment platform for features. All features (Markdown/Mermaid preview, LaTeX support, export to PNG/JPEG/SVG) are available without payment.

Confidence: 95
Payment platform: --
Source: AI / High
Login required: No
Reason: The extension operates entirely locally. It opens a preview tab using chrome.runtime.getURL('preview/preview.html') which serves local HTML/JS files. There is no authentication logic, no external account creation, and no dependency on a remote service for core functionality. Users can drag-and-drop local files or paste URLs without any login.

Permission risk

High-risk permissions

This estimate uses declared permissions and host permissions to assess access scope and sensitivity.

扩展能力较强：tabs、downloads、storage
主机权限覆盖范围较宽
同时具备浏览数据与站点访问能力

Publisher

TienChu

CHU DUC TIEN

Email: [email protected]
Phone: --
Address: --

Public contact fields are shown above. Developer portfolio pages are available on paid accounts.

View developer portfolio

Permissions

Host access