A captcha library that generates audio and image CAPTCHAs.
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Latest commit 700ef72 Apr 7, 2018



A captcha library that generates audio and image CAPTCHAs.

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  1. Audio CAPTCHAs DEMO
  2. Image CAPTCHAs



Install captcha with pip:

$ pip install captcha


Audio and Image CAPTCHAs are in seprated modules:

from captcha.audio import AudioCaptcha
from captcha.image import ImageCaptcha

audio = AudioCaptcha(voicedir='/path/to/voices')
image = ImageCaptcha(fonts=['/path/A.ttf', '/path/B.ttf'])

data = audio.generate('1234')
audio.write('1234', 'out.wav')

data = image.generate('1234')
image.write('1234', 'out.png')

This is the APIs for your daily works. We do have built-in voice data and font data. But it is suggested that you use your own voice and font data.


We need voice wav files. The voice wav file should be in 8-bit, please keep it as small as possible. Name your voice file as:

# exmaple: zh-1-lepture.wav

TODO: we need a place to upload voice files.