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@element-hq/element-web-shared-utils

v0.1.0

Published

Shared utilities for Element Web

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Readme

@element-hq/element-web-shared-utils

Standalone, utilities shared by Element projects.

The package provides string-based HTML sanitization and URL validation for untrusted Matrix-compatible formatted content. It is designed to work in Element Web as well as in external JavaScript and TypeScript packages.

Usage

import { isUrlPermitted, sanitizeHtml } from "@element-hq/element-web-shared-utils";

const safeHtml = sanitizeHtml(untrustedHtml);
const canOpen = isUrlPermitted(untrustedUrl);

The package does not import React, access browser globals, or depend on Element Web application code.

Rendering transforms

The default sanitizer applies the shared Element Web rendering and safety policy, including safe link handling, MXC-only images, and removal of inline styles. The transformTags option is a trusted application extension point: providing a transform for a tag replaces that tag's shared rendering transform. Applications should only use this for a deliberately narrower or explicitly trusted rendering context. Anchor URL validation and the sanitizer's attribute and URL checks remain active.

Copyright & License

Copyright (c) 2026 Element Creations Ltd.

This software is licensed under the terms described in the repository license files.

Publish a new version

To carry out a release, see the documentation at ../RELEASING.md.