Directus Blurhasher

This is an extension for Directus that automatically generates blurhash strings for images upon their upload.

Key features:

• Generation and storage of blurhash strings for images upon their upload.
• The ability to set the detail level for generating blurhash strings (Low, Medium, High).
• Generation of blurhash strings for existing images.
• Automatic migration upon extension installation.

In the system collection of illustrations (directus_files), in addition to the main fields, a blurhash field is added, which will store the generated blurhash string.

Settings

The following settings are available in the Directus settings section:

• Generate on restart - upon the next launch of Directus, blurhash strings will be generated for all existing images (this will be disabled after generation).
• Detail level - the level of detail for generating blurhash strings (Low, Medium, High)

The speed of blurhash generation directly depends on the level of detail.

The level of detail affects the number of components used in generating the blurhash string. The higher the level of detail, the more components will be used, and the more detailed the blurhash string will be.

• Low: 3x3 components
• Medium: 6x6 components
• High: 8x8 components

Requirements

This extension has been tested on Directus version v10.0.0, however, it should work on earlier versions as well.

Installation

npm install directus-extension-blurhasher

Example Dockerfile with the extension installed:

FROM directus/directus:10.10.4

USER root
RUN corepack enable
USER node

RUN pnpm install directus-extension-blurhasher

Development

Start the build process in development mode and a Docker image of Directus for testing.

cd blurhasher
npm install
npm run dev

To launch Directus itself:

docker-compose up

• Login: admin@example.com
• Password: admin