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Pré-visualização de MyProjects Markdown Viewer

MyProjects Markdown Viewer por Alffy

Render local Markdown files in Firefox as styled HTML — headings, tables, code, math and diagrams, in dark or light. Fully offline: your files never leave your machine and no data is collected.

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The showcase header: the MyProjects Markdown Viewer Feature Showcase, with its offline-only badges (renderer, MyProjects dark theme, local `.md` scope, and "data collection: none"), a table of contents covering all eight sections, and the opening text-formatting section.Deeply nested and mixed lists render correctly — ordered sub-lists, unordered lists, and the dark theme together — alongside a heading anchor and KaTeX math.Task lists with real checkboxes, plus a rich aligned capability matrix — GFM tables, heading anchors, fenced code, math, and more, each with a clear mode and support note.Offline-safe ASCII diagrams: the extension's data flow, layered pipeline, and decision flow, drawn as monospaced art — no network and no library required.Live Mermaid diagrams in a sandboxed page: they render locally with securitylevel: strict and are re-sanitized, so no script can run through a diagram.A spread of Mermaid diagram types — flowchart, sequence, class, state, and pie — drawn as crisp live SVG, fully offline, with each SVG re-sanitized on top of a strict sandbox for defense in depth.The showcase from the top: a self-contained tour in the light MyProjects theme, with a clickable table of contents and rich inline formatting (bold, italic, strikethrough, inline code). Everything renders locally and offline.Headings and math, rendered cleanly. Every heading (H1 through H6) gets a clickable anchor so you can deep-link to any section, and KaTeX renders inline and display LaTeX entirely offline — sanitized before it reaches the page.
Sobre esta extensão
Open local Markdown files in Firefox and read them properly — no upload, no account, no network.
  • Renders .md, .markdown, .mdown, .mkd and .mkdn files from file:// as styled HTML.
  • GitHub-style tables, task lists and code blocks with syntax highlighting (highlight.js).
  • Math with KaTeX, and live diagrams with Mermaid.
  • Dark and light themes; your choice is remembered.
  • Content sanitized with marked + DOMPurify.
  • Fully offline: no network requests, no telemetry, no data collected. Your files stay on your machine.
  • Open it from the toolbar (Ctrl+Shift+M), the right-click menu, or the sidebar. A 24-hour render cache keeps large documents fast.

One-time setup: Firefox blocks extensions from local files until you allow it. On first install a short setup page shows the single toggle to enable — "Access local files on your computer" in about:addons. If you skip it, the toolbar icon shows a "!" badge and the popup explains the fix.

Requires Firefox 154 or newer.
Comentários do desenvolvedor
v1.2.4 (current) — Adds a first-run setup page that opens once on install and walks the user through enabling "Access local files on your computer", with a live check that confirms the grant. Fixes the silent failure when file:// access is off: the toolbar icon now shows a "!" badge and the popup displays the exact steps plus a button that opens about:addons. Also fixes a cold-start "Rendering..." hang, a duplicate context-menu error after reload/update, and KaTeX fonts not loading on file:// pages. No new permissions.

Renders local .md / .markdown files (via file://) with marked + DOMPurify sanitization. Fully offline and private — no data is collected, stored, or transmitted (data_collection_permissions: none). Supports clickable heading anchors, GFM tables, task lists, nested/mixed lists, fenced code blocks with syntax highlighting, blockquotes, KaTeX inline + display math, and live Mermaid diagrams (sandboxed, SVG re-sanitized). A persisted dark / light / auto theme. Edits re-render automatically on reload. Requires Firefox 154+.

v1.2.3 — Packaging cleanup only: the signed package no longer ships the local demo profile (_webext-profile) or the unused vendored offline-build files, so it is runtime-only and Mozilla's validation warnings drop from 19 to 16. No user-facing change.

v1.2.0 — Added light theme mode (dark/light/auto), syntax highlighting (highlight.js), offline KaTeX math, and sandboxed Mermaid diagrams. Minimum Firefox raised 142 → 154 (MV3 sandbox CSP floor). Subsequent 1.2.x releases contain diagram colorization and rendering/release fixes.

v1.1.1 — Minimum Firefox raised to 142 to align with the data_collection_permissions declaration.

v1.1.0 — Initial feature set: dark theme, clickable heading anchors, GFM tables, task lists, nested lists, fenced code blocks, and blockquotes. Required Firefox 140+.
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Permissões e dados

Permissões necessárias:

  • Acessar as abas do navegador

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    • O desenvolvedor afirma que esta extensão não requer coleta de dados.
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    Versão
    1.2.4
    Tamanho
    2,03 MB
    Ultima atualização
    há um dia (13 de set de 2026)
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    Licença
    Licença MIT
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