Questions tagged [recaptcha]
For questions about the reCAPTCHA service: Designed to protect against spam and abuse by blocking bots while allowing valid users access.
recaptcha
4,434
questions
427
votes
26
answers
522k
views
Using reCAPTCHA on localhost
I'm developing a website using PHP and I want to make a human verification in one of the sessions. For the development, I'm initially running the system locally and when it is ready, I'm going to put ...
- 5,939
318
votes
5
answers
150k
views
How does Google reCAPTCHA v2 work behind the scenes?
This post refers to Google ReCaptcha v2 (not the latest version)
Recently Google introduced a simplified "captcha" verification system (video) that enables users to pass the "captcha" just by ...
- 4,900
266
votes
15
answers
310k
views
How to hide the Google Invisible reCAPTCHA badge
When implementing the new Google Invisible reCATPTCHA, by default you get a little "protected by reCAPTCHA" badge in the bottom right of the screen that pops out when you roll over it.
I'd like to ...
- 6,385
211
votes
9
answers
226k
views
How to Reload ReCaptcha using JavaScript?
I have a signup form with AJAX so that I want to refresh Recaptcha image anytime an error is occured (i.e. username already in use).
I am looking for a code compatible with ReCaptcha to reload it ...
- 44.1k
175
votes
14
answers
75k
views
Has reCaptcha been cracked / hacked / OCR'd / defeated / broken? [closed]
Have any programming methods have been used to defeat reCAPTCHA?
I'm interested in seeing evidence and potentially demonstrations that reCAPTCHA in particular has been made obsolete by completely ...
- 5,525
161
votes
17
answers
423k
views
How can I validate google reCAPTCHA v2 using javascript/jQuery?
I have a simple contact form in aspx.
I want to validate the reCaptcha (client-side) before submitting the form.
Please help.
Sample code:
<%@ Page Language="VB" AutoEventWireup="false" ...
- 2,067
154
votes
5
answers
83k
views
How does this checkbox recaptcha work and how can I use it?
I've recently signed up to the oneplusone website https://account.oneplus.net/sign-up, and noticed this checkbox recaptcha
How does it work, and how can I use it on my sites? Much better than those ...
- 2,966
123
votes
23
answers
174k
views
ReCaptcha API v2 Styling
I have not had much success finding how to style Google's new recaptcha (v2). The eventual goal is to make it responsive, but I am having difficulty applying styling for even simple things like width.
...
- 2,364
119
votes
17
answers
164k
views
How do I show multiple recaptchas on a single page?
I have 2 forms on a single page. One of the forms has a Recaptcha displaying all the time. The other should display a Recaptcha only after a certain event such as maxing out login attempts. So ...
- 7,063
101
votes
17
answers
414k
views
reCAPTCHA ERROR: Invalid domain for site key
I have implemented my reCAPTCHA in line with as is shown in the example.
I have this script in the head tag:
<script src="https://www.google.com/recaptcha/api.js"></script>
In my form ...
- 1,921
101
votes
8
answers
276k
views
Google Recaptcha v3 example demo
Until now, I was working with Google Recaptcha v2, but now I want to update my WebApp using the lastest version (v3).
Is it possible to anyone add a fully working Google Recaptcha v3 example for a ...
- 2,630
98
votes
7
answers
113k
views
How to check in js that user has checked the checkbox in Google recaptcha?
I have added the following before end of head
<script src='https://www.google.com/recaptcha/api.js'></script>
I have added this before end of form
<div class="g-recaptcha" data-...
- 3,278
98
votes
14
answers
170k
views
Change New Google Recaptcha (v2) Width
We've just started to implement the new google recaptcha as listed https://www.google.com/recaptcha/intro/index.html
However the new method seems to be contained within an iFrame rather than embedded ...
- 6,308
82
votes
2
answers
82k
views
ReCaptcha 2.0: enable Submit button on callback if recaptcha successful
I have a very simple form as follows. I want to make it so that the Submit button is disabled, and only enabled after the user has successfully completed the ReCaptcha.
I'm assuming I'm going to need ...
- 2,685
81
votes
11
answers
119k
views
Validating Recaptcha 2 (No CAPTCHA reCAPTCHA) in ASP.NET's server side
The new Recaptcha 2 looks promising, but i didn't find a way to validate it in ASP.NET's server side,
if(Page.IsValid) in This answer, is valid for the old Recaptcha, but not the new one,
How to ...
- 8,964
81
votes
3
answers
46k
views
reCAPTCHA - error-codes: 'missing-input-response', 'missing-input-secret' when verifying user's response (missing details on POST)
I am setting an invisible reCAPTCHA in my web application and having trouble verifying the user's response. (even though I am passing the correct POST parameters)
I am programmatically invoking the ...
- 6,946
80
votes
11
answers
86k
views
Google reCaptcha response "Uncaught (in promise) null"
I'm use reCaptcha v2 but in dev console response Uncaught (in promise) null in in any case (and moving the .reset() function)
console:
my code for recaptcha:
<div class="text-xs-center" style="...
- 960
78
votes
10
answers
47k
views
Is it possible to force fail a recaptcha v2 for testing purposes? (I.e. pretend to be a robot)
I'm implementing an invisible reCAPTCHA as per the instructions in the documentation: reCAPTCHA V2 documentation
I've managed to implement it without any problems. But, what I'd like to know is ...
- 2,395
77
votes
12
answers
157k
views
How to validate Google reCAPTCHA v3 on server side?
I've just set up the new google recaptcha with checkbox, it's working fine on front end, however I don't know how to handle it on server side using PHP. I've tried to use the old code below but the ...
- 771
70
votes
11
answers
139k
views
Test invisible recaptcha
We have integrated invisible recaptcha in one of our websites. Whenever we submit the form it automatically submits.
I read in some google groups that we would get a challenge when accessed on edge ...
- 701
68
votes
6
answers
80k
views
Recommendations for java captcha libraries [closed]
I'm looking for a replacement for JCaptcha, which doesn't seem to be maintained any more, and isn't very good to begin with. The replacement has to integrate nicely with JavaEE webapps.
As I can see ...
66
votes
16
answers
26k
views
Are reCAPTCHA CAPTCHAs getting harder or is just me [closed]
As I have been testing sites, I have found reCAPTCHAs getting more and more difficult to read. Is it just me or are others having this problem too?
Along with this, I had a user this morning complain ...
- 144k
64
votes
12
answers
171k
views
How to Validate Google reCaptcha on Form Submit
Recently, Google completely overhauled their reCaptcha API and simplified it to a single checkbox.
The problem is, I can submit a form with the reCaptcha included without checking it and the form ...
- 4,148
60
votes
14
answers
70k
views
Centering No Captcha reCaptcha
After a few hours of research and trial and error, I was finally able to add the new Google No Capatcha re Capatcha to my form and get it working, but for some reason, it won't center. Any ideas?
<...
- 723
60
votes
8
answers
95k
views
How can I make reCAPTCHA a required field?
I'm using Google reCAPTCHA and have been able to add the CAPTCHA component to my page inside a form. But when I submit the form there's no validation taking place to check if the CAPTCHA has been ...
- 771
60
votes
6
answers
236k
views
How can I bypass the Google CAPTCHA with Selenium and Python?
How can I bypass the Google CAPTCHA using Selenium and Python?
When I try to scrape something, Google give me a CAPTCHA. Can I bypass the Google CAPTCHA with Selenium Python?
As an example, it's ...
user11960891
56
votes
1
answer
63k
views
ReCaptcha 2.0 With AJAX
I have managed to get ReCaptcha 2.0 working in my website. However, it's only working when I don't use AJAX and I let the form submit "naturally".
I want to submit the form with the captcha and ...
- 6,409
55
votes
15
answers
187k
views
reCAPTCHA:"ERROR for site owner: Invalid site key"
I tried to set up reCAPTCHA, on my page by following the instructions here. I signed up for an API key pair and was issued a public key and a private key. It was not clear, to me, how the private ...
- 3,991
55
votes
10
answers
70k
views
Error: ReCAPTCHA placeholder element must be empty
I am using recaptcha with my laravel application.
I just want to check recaptcha's response on form submit using jquery and stop user by alert that pleade validate captcha.
but , I could not stop ...
- 1,998
55
votes
4
answers
76k
views
New reCaptcha with jQuery Validation Plugin
I searched and can't figure out how to validate the new reCaptcha, before form submit, along with the validate function of jQuery validation Plugin.
My intent:
$.validator.addMethod('...
- 1,829
52
votes
5
answers
45k
views
Setting reCAPTCHA Version 2 set another language other than English
How can I set this in another language, ie:. French
I've tried:
var RecaptchaOptions = {
lang : 'fr',
};
Found above here
Which does nothing.
I couldn't find relevant info under API ...
- 4,108
47
votes
2
answers
95k
views
How does reCAPTCHA 3 know I'm using Selenium/chromedriver?
I'm curious how reCAPTCHA v3 works. Specifically the browser fingerprinting.
When I launch an instance of Chrome through Selenium/chromedriver and test against reCAPTCHA 3 (https://recaptcha-demo....
- 2,835
47
votes
1
answer
5k
views
Recaptcha V3 error incorrect-captcha-sol randomly
I'm getting incorrect-captcha-sol error code sometime while using Google reCAPTCHA server side verification api.
I have integrated google recaptcha validation to some of my apis.
To do so, I pass ...
- 471
46
votes
4
answers
208k
views
Google reCAPTCHA: How to get user response and validate in the server side?
I am doing a Java (JSP + Servlet) web application (I understand that this question is technology-independent). I hope to use the latest Google reCAPTCHA service.
I am playing with a Google reCAPTCHA ...
- 14.4k
46
votes
7
answers
41k
views
Force Google Recaptcha Challenge
Is it possible to set some flag in my browser so that I always get the RECAPTHCA image challenges? Sometimes when you click on the "I am not a robot" button, it gives you a pop up challenge with ...
- 3,229
44
votes
2
answers
44k
views
ReCaptcha v2 client side events
Does ReCaptcha v2 expose any client side events? I am looking specifically to identify when the Captcha response has been returned once the box is ticked, so I can reveal the "Continue" button below.
...
- 8,838
43
votes
6
answers
97k
views
How to Verify Google Recaptcha V3 Response?
How to integrate Google reCAPTCHA Version 3 in Client Side and Server Side(php). following code use to display recaptcha but its not working good. How to do this integration.
<html>
<...
- 5,699
42
votes
7
answers
42k
views
How do you set the badge position with reCAPTCHA v3?
I would like to use an inline badge with v3, but there is no documentation on badge position for v3.
42
votes
9
answers
118k
views
Uncaught ReferenceError: grecaptcha is not defined
I am using recaptcha v2
I am getting the following error occasionally (sometimes i don't get error and sometimes i do get it)
Uncaught ReferenceError: grecaptcha is not defined
It seems because of ...
- 18.4k
41
votes
10
answers
80k
views
ReCAPTCHA couldn't find user-provided function: myCallBack
I'm trying to use ReCAPTCHA where I am getting following error.
ReCAPTCHA couldn't find user-provided function: myCallBack.
How can I solve this issue?
var verifyCallback3 = function(response) {
...
- 433
41
votes
4
answers
17k
views
ReCaptcha not working properly on iPhone
I have a website with a simple contact form. The validation is somewhat minimal because it doesn't go into a database; just an email. The form works as such:
There are 5 fields - 4 of which are ...
- 3,907
37
votes
8
answers
29k
views
How can I process HTML form validation before reCAPTCHA's validation?
I integrated the new hidden reCAPTCHA (v2) framework which by default verifies the user with the click event of the submit button. But this event is triggered before the built-in HTML form validation. ...
- 5,603
36
votes
5
answers
83k
views
Implement the new Invisible reCaptcha from Google
I'm building a PHP website where I would like to put a captcha on the login form. I went with Google's new Invisible reCaptcha but I'm having trouble with implementing it (HTML part, the PHP is ...
- 465
36
votes
3
answers
10k
views
Recaptcha creates iFrame on page, breaks styling
Recaptcha is adding a "This frame prevents back/forward cache problems in Safari" iFrame to the top of my website (code included below), which is pushing off the styling by 20-30px (approximately).
...
- 132k
35
votes
11
answers
83k
views
How to reload the google recaptcha widget after user submits invalid inputs
I have a registration form with the new google recaptcha widget on it. When a user submits info, we check the validation with javascript and return the problems to the page (ex: "please use a valid ...
- 8,581
35
votes
2
answers
26k
views
Using recaptcha with Firebase
Surprisingly-even more when both are Google products-there is no information that I can find on how to integrate Recaptcha with Firebase. Is it even possible? If not, what can I use to validate humans ...
- 12.6k
35
votes
1
answer
21k
views
Recaptcha - Availability in China [closed]
We are developing a site that will require the usage of a captcha service.
Has anyone successfully use Google Recaptcha for a website for users from Mainland China?
Did you have major problems with ...
- 991
34
votes
3
answers
16k
views
How to run reCaptcha ONLY if HTML5 validation has passed?
Usually, HTML5 form validation runs before the submit event.
With this
<form id="myForm">
<input type="text" name="foo" required />
<button type="submit"> Submit </...
- 49.8k
32
votes
8
answers
70k
views
How to use .env variables in Nuxt 2 or 3?
I have .env file in the project root, and in my nuxt config I am using variables to configure ReCaptcha like this:
import dotenv from 'dotenv'
dotenv.config()
export default {
modules: [
[...
- 4,941
31
votes
14
answers
70k
views
No CAPTCHA reCAPTCHA Resizing
Hi I just added Google's No CAPTCHA reCAPTCHA to my website, and I am running into a small little issue. It does NOT fit on my mobile website, and that is a HUGE issue. I have tried everything such as:...
- 720