Spectra is the rebranded Ultimate Addons for Gutenberg, a Gutenberg-native block library covering Forms, Containers, Image Gallery, Post Grid, Tabs, and more. Block instances are stored as block markup inside post_content using comment delimiters like <!-- wp:uagb/forms --> (the namespace stayed uagb after the rename). Reusable blocks and templates live in standard WordPress CPTs.

SleekView reads post_content across pages, posts, and any public CPTs, indexes Spectra block usage by name, and surfaces each post with its block list as a filterable column. Filter to posts using uagb/forms to audit Spectra form coverage. Filter to posts using uagb/post-grid to find dynamic post lists across the site. Sort by last edited to spot recently touched pages.

Inline edits to status, slug, and author write through standard WordPress update calls. The Spectra block markup in post_content stays editable in the block editor. The grid handles the audit; the editor handles the content.

Spectra positions itself as a Gutenberg-native block library with a deep set of layout, form, and dynamic-content blocks, which is why agencies and product teams adopt it for sites that need more than core blocks offer. The trade-off shows up at scale: uagb/* block usage accumulates across years of pages, with no admin surface to filter posts by which block they contain. Default WordPress admin lists posts and pages with no awareness of the Spectra blocks inside.

A page using a deprecated block name keeps rendering until the plugin upgrades and breaks it. Forms coverage across the site is invisible until someone audits page by page. Reusable blocks orphan when their parent pages are deleted.

None of this is Spectra's fault, it's what happens when a flexible block library meets long-running content. A queryable block usage index changes audits fundamentally. Filter by block name to find every page using Spectra Forms.

Surface deprecated usage before the next upgrade. Prune unreferenced reusables. Agencies use this as a pre-upgrade audit; in-house teams use it as the block coverage documentation they finally have.