wpuntexturize

By default, WordPress converts single and double quotation marks into their curly alternatives. This plugin prevents that from happening, so you can enjoy your quotation marks in their non-curly glory. If your content happens to already have curly quotation marks in it, then this plugin can optionally also convert them to their non-curly alternatives.

Note: Despite the unfortunately misleading name, this plugin is NOT the antithesis of WordPress’s wptexturize() function. This ONLY prevents WordPress from making HTML entity code substitutions of single and double quotation marks with their curly alternatives and does NOT prevent wptexturize() from making any other character and string substitutions. See the FAQ for details on the filters processed by the plugin.

Links: Plugin Homepage | Plugin Directory Page | GitHub | Author Homepage

Developer Documentation

Developer documentation can be found in DEVELOPER-DOCS.md. That documentation covers the numerous hooks provided by the plugin. Those hooks are listed below to provide an overview of what’s available.

• c2c_wpuntexturize : An alternative approach to safely invoke c2c_wpuntexturize() in such a way that if the plugin were deactivated or deleted, then your calls to the function won’t cause errors in your site. This only applies if you use the function directly, which is not typical usage for most users.
• wpuntexturize_filters : customize what filters to hook to be filtered with wpuntexturize. See the Description section for a complete list of all filters that are filtered by default.
• c2c_wpuntexturize_replacements : Customize the character replacements handled by the plugin.
• c2c_wpuntexturize_convert_curly_quotes : Enable conversion of preexisting curly quotes into their non-curly alternatives.

1. Install via the built-in WordPress plugin installer. Or download and unzip wpuntexturize.zip inside the plugins directory for your site (typically wp-content/plugins/)
2. Activate the plugin through the ‘Plugins’ admin menu in WordPress
3. Optional: If you want to also convert existing curly quotation marks within posts to their non-curly alternatives, then on the Settings -> Reading admin page check the checkbox labeled “Convert existing curly quotes in posts to their non-curly alternatives”. (Reminder that the plugin will always prevent WordPress from converting non-curly quotation marks to the curly alternatives.)

1. 

   A screenshot of the plugin's checkbox on the Settings -> Reading admin page. If checked, the plugin will convert existing curly quotation marks into their non-curly alternatives.

2.3 (2025-04-07)

Highlights:

This recommended release drops support for versions of WP older than 5.5, prevents translations from including unintended markup, verifies compatibility through WP 6.8+ and PHP 8.3+, and a few more minor changes.

Details:

• Change: Remove code supporting versions of WP older than 5.5
• Change: Escape output of all translated strings
• Change: Discontinue explicit and unnecessary loading of textdomain
• Change: Remove is_wp_55_or_later()
• Change: Sanitize the plugin’s setting value
• New: Add sanitize_boolean()
• Change: Note compatibility through WP 6.8+
• Change: Drop compatiblity with versions of WP older than 5.5
• Change: Confirm compatiblity through PHP 8.3+
• Change: Shorten plugin description in plugin header and readme.txt
• Fix: Fix typo in ‘Author URI’ plugin header value
• Change: Update copyright date (2025)
• Unit tests:
  • Change: Explicitly define return type for overridden method
  • Change: Delete tests for removed back-compatibility

2.2.2 (2024-08-08)

• Change: Note compatibility through WP 6.6+
• Change: Update copyright date (2024)
• Change: Reduce number of ‘Tags’ in readme.txt
• Change: Remove development and testing related files from release packaging
• Unit tests:
  • Hardening: Prevent direct web access to bootstrap.php
  • Change: In bootstrap, store path to plugin file constant
  • Change: In bootstrap, add backcompat for PHPUnit pre-v6.0

2.2.1 (2023-04-29)

• Change: Note compatibility through WP 6.3+
• Change: Update copyright date (2023)
• Change: Add link to DEVELOPER-DOCS.md in README.md
• New: Add .gitignore file
• Unit tests:
  • Fix: Allow tests to run against current versions of WordPress
  • New: Add composer.json for PHPUnit Polyfill dependency
  • Change: Prevent PHP warnings due to missing core-related generated files

Full changelog is available in CHANGELOG.md.