🧑‍💻 Dev · Migration

Serialized Search-Replace

Find and replace inside PHP serialized strings and recalculate s:N:"…" lengths — so WordPress options and postmeta survive domain moves.

✅ Length-safe replace · ⚡ Dry-run first · 🔒 Stays in your browser

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What would improve this tool?

Replace settings

Replace with

Case sensitive Dry run (count only)

Serialized data

Backup the database first. Prefer WP-CLI search-replace for full sites. This tool is for small dumps and option snippets.

OUT Result

Matched string samples

WordPress tip

Why plain find-replace breaks WP

PHP stores strings as s:28:"http://example.com". Change the URL without updating 28 and unserialize() fails — menus, widgets, and Elementor data go blank. This tool only edits string payloads and rewrites lengths.

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