HTML by Mosaic

by Kolekti (part of The Adaptavist Group)

works with Confluence Cloud

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SUPPORT: Partner Supported

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Key highlights of the appSecurely embed HTML/CSS/JS on Confluence pages

HTML Security & Governance

Automatic sanitisation blocks unsafe scripts to protect Confluence. Organise HTML, CSS, and JS in separate tabs for easier editing. Enable secure, admin-controlled JavaScript with Mosaic Advanced Edition.

Ready-to-use Code Library

Create richer pages in seconds by applying built-in designs including tabs, buttons, diagrams, roadmaps, and more, as well as full-page design templates.

Code Import from Attachment

Import your existing HTML, CSS, and JavaScript via file upload. Easily reuse and adapt content without rebuilding. Perfect for migrating CSS/Div elements from Confluence Data Center.

Supporting media

Editions

This app offers two different editions - Standard and Advanced. You can start a free trial of either edition, and change your edition anytime during or after the trial.

Standard

Onboard your team and scale fast

Includes:

Sanitised HTML and CSS
Import code from attachments

Advanced

Unlock the full range of app features

Everything from Standard, plus:

Sanitised Javascript
Import JS code from attachments
Priority support

More details

Extend your Confluence use cases with a powerful, secure HTML macro. Unlike other solutions, Mosaic automatically sanitises code to block unsafe scripts, while enabling structured editing and admin-controlled JavaScript for better governance. This gives teams full flexibility to create dynamic content without compromising security.

Why use the HTML macro:

Build custom layouts with HTML, CSS, and JavaScript for tailored use cases.
Add interactive elements to enhance static Confluence pages.
Control structure, spacing, and design to create website-like experiences.
Use pre-built code snippets for consistent, polished content without starting from scratch.
Import existing HTML, CSS, and JavaScript files easily—ideal for migrations.

Security certified: ISO 27001 certified for enterprise-grade security and built on Atlassian Forge.

Use HTML/CSS in Standard mode, or unlock advanced interactivity with admin-controlled JavaScript in Mosaic Advanced Edition.

Resources

App documentation
Comprehensive set of documentation from the partner on how this app works

Privacy and Security

Privacy policy

Atlassian's privacy policy is not applicable to the use of this app. Please refer to the privacy policy provided by this app's partner.

Partner privacy policy

Security program

This app is part of the Marketplace Bug Bounty program.

About Bug Bounty program

Integration permissions

HTML by Mosaic integrates with your Atlassian app

Version information

Version 5.9.0•for Confluence Cloud

Release date: Aug 6th 2026
Summary: Minor version update
Details: Minor version update
Payment model: Paid via Atlassian
License type: Commercial