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Unserializer

Fast, free, open source, ad-free tools.

Built by @aminurislamarnob

Our tools are free and open source. Feel free to contribute.

Auto-capture all the info engineers need to debug!

Free Online Unserializer - Parse Serialized Data Instantly

Paste a serialized string and instantly convert it into a human-readable format. Choose between print_r() for a quick overview or var_dump() for type-annotated detail. Ideal for inspecting WordPress options, transients, and metadata stored in the database.

How to Use the Unserializer

  • Step 1:
    Paste a serialized string into the input box. You can grab these from database fields, API responses, or debug logs.
  • Step 2:
    Select an output format — print_r() for a compact view or var_dump() for detailed type and length information.
  • Step 3:
    Copy the formatted output and use it in your debugging workflow.

FAQs

  • What is a serialized string?
    Serialization converts a data structure into a compact string representation for storage or transfer. This tool reverses that process so you can read the original data.
  • Where do I find serialized data?
    Common sources include the WordPress wp_options table, user meta fields, WooCommerce order meta, transient caches, and plugin settings stored in the database.
  • What is the difference between print_r() and var_dump()?
    print_r() shows values and structure in a concise format. var_dump() adds explicit type and length annotations for every value, which is more useful for type-sensitive debugging.
  • Does this tool modify the original data?
    No. The tool only reads and formats the input — nothing is stored, sent, or altered.