WordPress / Gutenberg

A static block for formulas, written calculations, graphs and chemistry.

Installation

Under Plugins → Add New Plugin → Upload Plugin, install formulix-wordpress-0.1.2.zip and activate it.

Configuration

Under Settings → Formulix, enter the HTTPS API URL and your domain-bound public key.

API and public key

The default URL is the official service, https://api.formulix.com.br. The key is optional: without one, the editor’s domain uses the Free plan; when it runs out, the dialog shows a sign-up link. Register the domain in the dashboard and choose a plan; registration covers its subdomains and the site keeps working without a key.

Preview and insertion content is sent to the API. Use only the domain-bound public key in the browser, never administrator, SMTP or Mercado Pago credentials. See authentication, errors and limits and the privacy policy.

Use and media

In Gutenberg, add a Formulix block and choose a formula, calculation, graph or chemistry item. Use the block’s edit action to reopen it. PNGs use the media library and the native upload_files permission; users without it cannot upload graphs.

The block saves static HTML: formulas, tables and images remain readable after deactivating the plugin. KSES is extended for the necessary MathML elements and attributes without granting authors unfiltered_html.

Known limits

Tested on WordPress 6.8/PHP 8.3 with an Author account: all four item types, real uploads, REST/KSES saving and editing after reload. It has not been submitted to WordPress.org. This test does not validate other versions or WordPress editors.

The Word OMML/RTF clipboard path remains specific to TinyMCE. Word paste on the other platforms and using different languages at the same time are not supported yet.

Before public use, the operator must disclose the external service, costs, support and final terms and privacy policy. The ZIP includes licences and sources in source/.