Sleekode Performance Core is a lightweight WordPress plugin that optimizes performance by disabling unnecessary core features such as Emoji scripts, oEmbed, and the Heartbeat API. It also removes front-end CSS and provides controls for the admin bar. The plugin uses only standard WordPress APIs, requires no external connections, and includes a simple settings screen with a dashboard status widget.
Sleekode Performance Core sits in PulseGate's Developer Tools category. It focuses on reducing WordPress bloat and improving site performance without complex configuration or external services. Sleekode Performance Core is a B2B product aimed at wordpress site owners. Sleekode Performance Core is free to use. Sleekode Performance Core is available on the web and embeddable surfaces, and it can be self-hosted.
ms13th builds and maintains Sleekode Performance Core, and it first shipped in 2026. Key capabilities include Disable Emojis, Control Heartbeat API, and Remove Embed Scripts.
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