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OnlyRead vs Markdown Viewer

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

OnlyRead compared with Markdown Viewer
DetailOnlyRead logo OnlyReadMarkdown Viewer logo Markdown Viewer
What it doesRead-only mode for AI browser agents Open, read, annotate and export local and web Markdown files in Chrome or Edge
StageMVP Not given
FoundedNot given Not given
Based inNot given Not given
Pricing modelFreemium Freemium
PricingFree: $0/month, open source with bring-your-own-model key. Pro: Free during early access with 1,000 judged requests; $5/month when paid tier launches. Not given
Key features
  • Blocks write, post, delete and purchase operations
  • Works with any Chromium browser and AI agent
  • App-specific rules and request classification
  • Open source codebase
  • Central control across multiple browsers (Pro)
  • One-link agent browser setup (Pro)
  • No API key required (Pro)
  • Per-account usage limits with fail-closed behavior
  • Tested on 1,000+ real tasks
  • Folder browsing and file navigation with reading position memory
  • Document outline and search across folder or document
  • Highlights, underlines, and comments linked to source
  • Diagram rendering including Mermaid, Graphviz, PlantUML and Vega-Lite
  • Math rendering with KaTeX and syntax-highlighted code
  • Multiple views as document, mind map, or presentation
  • Export to HTML, Word, PDF, PNG, SVG and JPEG
  • Customizable document themes and background skins
  • Localized interface in 15 languages
  • All processing and data stored locally on device
What makes it different
  • Reduces accidental changes by AI agents without eliminating access to read data
  • Open source with full code transparency
  • Fail-closed design for unclassified requests
  • Tested against real AI agent tasks on major websites
  • Fully managed Pro option with no setup required
  • Works offline with no account required
  • Renders technical Markdown inline including diagrams, math and code
  • Multiple connected views of the same file as document, mind map or presentation
  • Export to multiple formats without modifying the original Markdown
Free planNot given Not given
Open sourceNot given Not given
PlatformsNot given Not given
Public APINot given Not given
Community votes00
DR (Domain Rating by Ahrefs)Not checked yet no change since last check8 no change since last check
Trust Flow (Majestic)05
Citation Flow (Majestic)022
Referring domains (Majestic)039

4 details filled in for both companies.

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