- layout and motion
- editor and admin improvements
- upload security
- on-demand site check
The idea
Every WordPress site we build ends up with the same folder of snippets: small fixes, bits of polish, the safeguards core doesn’t cover. WP Kit Mattrs is that folder turned into one plugin, so we stop copying files between projects and start switching things on.
Every feature is a toggle. Turn on what a site needs, leave the rest off – anything switched off loads nothing on the page.
Layout & motion
Movement that behaves itself
- Reveal on scroll – elements arrive as they come into view, with control over speed, easing, and how much each one overlaps the last.
- Smooth anchor scrolling, offset so a sticky header never covers the heading you just jumped to.
- Animated details blocks, so accordions open and close instead of snapping.
- Modal windows built from blocks – no shortcodes, no custom fields. Any button, group, or image can open one, with an optional slider between them.
Animations respect a visitor’s reduced-motion setting, and content is never left hidden if a script fails to load. Modals set the right dialog roles, move focus in, and hand it back on close.
Editor & admin
Fewer small annoyances
- Skip the pattern picker that opens every time you start a new page.
- Stop the editor turning straight quotes into curly ones inside code.
- Give every post type excerpts and tags, not just posts.
- Order query loops at random, or leave the current post out of them.
- Tidy up the typographic details that show up in published text.
Security
Uploads cleaned, sites checked
SVG files are useful and quietly dangerous – they’re code, not pictures. Every SVG upload is cleaned before it’s stored, stripping scripts, event handlers, and references to outside servers. A file that can’t be cleaned isn’t stored at all.
Site Check runs from the settings screen and reports on:
- Executable code hiding in the uploads folder – the clearest sign a site’s been broken into.
- WordPress core files compared against the official release, which is how most infections survive a clean-up.
- Error output or log files a visitor could read.
- SVGs already in the media library, with the option to clean them.
- Known vulnerabilities in the installed plugins, themes, and WordPress version.
Checks report; they don’t change a site behind your back. The vulnerability check is the only feature that contacts an outside service, and it stays off until you switch it on.
Integrations
Playing nicely with the rest
Optional adjustments to how popular third-party plugins behave – including a fix for the sitemap header that can stop search engines fetching a sitemap they’re perfectly able to read.
Delivery
Maintained, not abandoned
WP Kit Mattrs isn’t on the WordPress plugin directory. It’s installed directly and updates itself in place, with new versions going out to sites on an active maintenance plan.
| WordPress | 6.5 or newer |
| PHP | 7.4 or newer |
| Themes | Block and classic* |
| Accounts | None – no sign-up, no API keys |
| Loading | Scripts and styles load only for the features you switch on |
* Built and tested against block and classic themes. Most layout and motion features (reveal on scroll, smooth anchor scrolling, modals) also work with page builders like Elementor, Divi, and WPBakery. A few editor-specific features are tied to the block editor and won’t apply outside it.
Built and maintained by Mattrs, for sites on a maintenance plan. Get in touch if you’d like it on yours.
