Description
Fix the WordPress plugins slowing your site - in one click, safely.
You've felt it. A page that used to load fast now feels sluggish. A plugin update went out yesterday. Was it that one? Or the theme? Or the last WooCommerce update? Guessing costs hours. Reading Query Monitor's SQL dump costs more. Google PageSpeed says "reduce JavaScript" but never tells you which script from which plugin.
Why WhySlow Pro beats the alternatives: WhySlow Pro is the only WordPress performance plugin that not only tells you exactly which plugin is slow but also applies safe one-click fixes without touching your plugins, theme or WordPress core. Every fix is written to a single mu-plugin helper file at wp-content/mu-plugins/whyslow-fixes.php - one-click reversible. Uninstall Pro and your site is exactly as it was before.
Fully compatible with WooCommerce, HPOS, and block-based Cart/Checkout
Includes a dedicated WooCommerce performance module with rules for cart fragments, wc_last_active writes, product query overhead, HPOS-specific issues, and Cart/Checkout blocks bloat. Detects the WooCommerce performance killers other tools miss.
What Pro adds on top of the free plugin
- Everything free does - profiling, per-plugin attribution, full-site sitemap audit, speed score, trend graph, compare, tools.
- One-click safe fixes - every finding gets an Apply Fix button. Writes a mu-plugin helper. Never modifies plugins, theme or WordPress core.
- Undo any fix - one click reverts. Site returns to exactly its previous state.
- Continuous monitoring - samples 1% of real visitor traffic in the background. Catch regressions the moment a plugin update introduces them.
- Email + Slack alerts - get pinged the second a page becomes 30% slower than its 7-day baseline. Fix it before customers notice.
- Deep profile mode - for stubborn issues, records every single WordPress action and filter fired on the page.
- WooCommerce performance module - advanced WC-specific rules (cart fragments, wc_last_active, product query overhead, HPOS, block checkout).
- Priority email support - direct line to the developer. Under-24-hour response guaranteed.
- Free lifetime updates - one-time payment. Every future release included forever. No subscription.
One-time payment. No subscription.
Compare: Perfmatters is $24.95/year, Query Monitor Pro doesn't exist, ManageWP is $2-$8/month per site, NitroPack is $17-$29/month. WhySlow Pro is one payment, lifetime updates, zero recurring cost.
Backed by a 30-day money-back guarantee. If WhySlow Pro doesn't help you find something worth fixing on your site, refund - no questions asked.
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