Make captcha case-insensitive

app.py

@@ -157,7 +157,7 @@ def validate_upload(input):
         raise gr.Error("Cannot parse file")
 
 
-def generate_captcha(width=200, height=150, length=4):
+def generate_captcha(width=300, height=220, length=4):
     text = ''.join(random.choices(string.ascii_uppercase + string.digits, k=length))
     captcha_obj = ImageCaptcha(width, height)
     data = captcha_obj.generate(text)
@@ -167,7 +167,7 @@ def generate_captcha(width=200, height=150, length=4):
 
 def validate_captcha(input, text, img):
     img, new_text = generate_captcha()
-    if input == text:
+    if input.lower() == text.lower():
         return True, styled_message("Correct! You can procede with your submission."), new_text, img, ""
     return False, styled_error("Incorrect! Please retry with the new code."), new_text, img, ""