NGINX Captcha Module
15 — Every core and module directive — syntax, defaults, contexts, and real configuration examples.
captcha
The captcha directive enables the generation and handling of CAPTCHA images in…
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captcha_case
The 'captcha_case' directive controls whether the captcha validation should be…
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captcha_charset
The `captcha_charset` directive defines the set of characters used to generate…
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captcha_csrf
The `captcha_csrf` directive defines the name of the CSRF variable used in…
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captcha_expire
The `captcha_expire` directive sets the duration in seconds before a captcha…
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captcha_font
The 'captcha_font' directive sets the font file for rendering the text in…
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captcha_height
Sets the height of the CAPTCHA image in pixels.
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captcha_length
The 'captcha_length' directive specifies the length of the generated captcha…
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captcha_level
The 'captcha_level' directive controls the complexity of the captcha generated…
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captcha_line
The `captcha_line` directive enables the generation of a captcha image with a…
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captcha_name
The 'captcha_name' directive sets the name of the cookie used to store the…
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captcha_secret
The captcha_secret directive sets the secret key used for generating captcha…
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captcha_size
The 'captcha_size' directive defines the font size of the captcha text…
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captcha_star
Enables the generation of a captcha image in NGINX.
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captcha_width
Sets the width of the captcha image in pixels.
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