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marker.js
Seamless Image Annotation for Web Apps

marker.js
Freemium

Home: https://markerjs.com

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What is marker.js?

marker.js is a comprehensive JavaScript library designed to bring robust image annotation functionality to web applications. With marker.js, users can enrich images with text, arrows, callouts, emojis, and various shapes, making it easy to provide visual feedback or highlight key elements directly within your app. The tool offers customizable, headless web components that fit any design language and work seamlessly with frameworks like React, Vue.js, Angular, and Svelte, as well as vanilla JavaScript.

The library features an interactive viewer component for displaying and managing annotations, along with an image renderer for overlaying markup. marker.js is framework-agnostic and can be integrated into any project, offering both free and commercial licenses depending on branding and deployment needs. Developers benefit from a ready-to-use editor UI or the flexibility to build custom interfaces tailored to specific user experiences.

Features

  • Customizable Annotations: Add text, arrows, emojis, callouts, and shapes to images
  • Framework-Agnostic: Compatible with React, Vue.js, Angular, Svelte, and vanilla JavaScript
  • Interactive Viewer: Display and manage annotations as interactive overlays
  • Image Renderer: Render markup directly on images in apps
  • Headless Components: Fully customizable UI elements to fit any design language
  • Ready-to-Use Editor: Optional plug-and-play editor UI
  • Open Integration: Installable via npm or CDN and works without a framework
  • Flexible Licensing: Free linkware license or commercial options for whitelabeling

Use Cases

  • Adding annotation tools to web-based graphic editors
  • Enabling users to highlight and comment on images for feedback workflows
  • Integrating visual markup for issue tracking or QA in development apps
  • Developing educational platforms with interactive image annotations
  • Creating collaborative design review tools with image markup capabilities

FAQs

  • Can I use marker.js for free?
    Yes, marker.js can be used for free under the linkware license, which requires a small logo to be displayed. Commercial licenses are available to remove branding.
  • Does marker.js work with React, Vue.js, Angular, or Svelte?
    Yes, marker.js is framework-agnostic and supports all modern web frameworks.
  • How do I choose between marker.js 3 and marker.js UI?
    Use marker.js UI for a quick start with a ready-made editor, or marker.js 3 for full customization and control over the annotation editor's integration and functionality.
  • Can I use marker.js without a framework or bundler?
    Yes, marker.js can be used with plain HTML, CSS, and JavaScript via direct download or CDN.
  • Are contributions to the core library accepted?
    No, due to licensing complications, marker.js does not accept contributions to the core library.

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