SlimPress – Disable Unused Features, Heartbeat & XML-RPC

SlimPress turns off parts of WordPress core that your site does not use – emoji scripts, XML-RPC,
the REST API for logged-out visitors, Heartbeat, comments, feeds, author and date archives,
search, revisions, image sizes, block editor extras, dashboard clutter, automatic updates,
admin emails and more – grouped by area and explained in plain language. A built-in performance test
compares your own pages with and without SlimPress, without changing your settings.

What makes it different:

• Every toggle is free. No pro tier, no upsells, no nag banners, no telemetry.
• “What might break” on every switch, plus a warning when an active plugin relies on the feature
  you are about to switch off.
• An honest impact badge on every toggle, including “None – cleanup only”.
• A performance test that tells the truth. It loads your pages with and without SlimPress’s
  features in the same run and says “within noise” when the difference is too small to be
  reliable. It also shows what each plugin, the theme and WordPress core add to the page,
  marking the files SlimPress can remove. It can measure each feature individually and report
  which autoloaded options each request loads from the database.
• Undo for every change. SlimPress keeps the last 10 versions of its settings, so any save,
  preset, import or reset can be undone.

What SlimPress deliberately does not do: page caching, minification, “remove unused CSS”,
JavaScript delays, per-page script managers or CDN rewrites. Features must serve the purpose of
turning off something WordPress core does.

Nothing is switched off until you switch it off. Every switch is a runtime filter, so
deactivating SlimPress restores WordPress’s default behaviour on the next request. SlimPress never
writes to core tables or core options itself, except when you click the one-off “Delete old
revisions” button and confirm. Retention limits also have lasting effects: when you set a limit
for revisions, trash, WooCommerce scheduled actions or logs, WordPress or WooCommerce permanently deletes anything
that exceeds it. Media switches affect the image copies created during upload; switching them
off or deactivating SlimPress does not recreate missing copies or restore deleted data.

122 switches in 13 groups, plus the Assets tab

• Front-end – emoji scripts, generator tag, RSD, shortlink, feed and REST links in the page
  head, global styles, core block CSS, Dashicons and jQuery Migrate for visitors, the image
  lightbox, speculative loading, smart quotes – plus “Load the next page before the click”.
• APIs & connections – XML-RPC, the REST API for logged-out visitors (with an allowlist),
  the REST user list, Heartbeat per location, WP-Cron on page load, oEmbed, auto-embeds,
  application passwords, the Abilities API, the AI client and Connectors screen, and calls from