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About reCAPTCHA
What is reCAPTCHA?
How can I distinguish between different versions of reCAPTCHA?
Helping everyone, everywhere, one CAPTCHA at a time
Using reCAPTCHA V2
How do I use reCAPTCHA?
Accessibility
This CAPTCHA is too hard
My computer is sending automated queries
Help for reCAPTCHA users
Browser requirements for reCAPTCHA
reCAPTCHA isn't displaying properly on Internet Explorer, what do I do?
Not seeing the checkbox and want an easier challenge?
Help for website owners
How can I integrate reCAPTCHA in my site?
FAQs
About reCAPTCHA
What is reCAPTCHA?
reCAPTCHA is a free service from Google that helps protect websites from spam and abuse. A “CAPTCHA” is a turing test to tell human and bots apart. It is easy for humans to solve, but hard for “bots” and other malicious software to figure out. By adding reCAPTCHA to a site, you can block automated software while helping your welcome users to enter with ease. Try it out at
ReCAPTCHA demo.
To learn more about reCAPTCHA, visit our official website or our technical documentation site.
How can I distinguish between different versions of reCAPTCHA?
There currently exist two versions of reCAPTCHA, V1 and V2.
V1
reCAPTCHA V1 can take many forms, but here are the most common ones:
reCAPTCHA v1 themes
V2
The newer V2 reCAPTCHA looks like this:
animated reCAPTCHA checkbox widget
Helping everyone, everywhere, one CAPTCHA at a time
CAPTCHAs play an important role in keeping the internet spam-free and making everyone’s experience a little bit better.
reCAPTCHA also makes positive use of the human effort spent in solving CAPTCHAs by using the solutions to digitize text, annotate images, and build machine-learning datasets. This in turn helps preserve books, improve maps, and solve hard AI problems.
Using reCAPTCHA V2
How do I use reCAPTCHA?
Just click the checkbox:
animated reCAPTCHA checkbox widget
If you see a green checkmark, congratulations! You’ve passed our robot test (yes, it’s that easy). You can carry on with what you were doing.
Sometimes we need some extra info from you to make sure you’re human and not a robot, so we ask you to solve a challenge:
CAPTCHA challenge
Simply follow the on-screen instructions to solve the puzzle and then carry on with your task.
Accessibility
reCAPTCHA works with major screen readers such as ChromeVox (Chrome OS), JAWS (IE/Edge/Chrome on Windows), NVDA (IE/Edge/Chrome on Windows) and VoiceOver (Safari/Chrome on Mac OS). reCAPTCHA will alert screen readers of status changes, such as when the reCAPTCHA verification challenge is complete. The status can also be found by looking for the heading titled “recaptcha status” in the “recaptcha widget” section of the page. See reCAPTCHA ARIA Status Messages for more information.
Please use the following steps to solve an audio challenge:
If you are presented with a visual challenge, locate and click on the Get an audio challenge button.
You will be presented with one of two versions of the audio challenge depending on whether you’re using a mobile device.
audio challenge with the focus set on the PLAY buttonmobile audio challenge with the focus set on the audio controls
Press PLAY and enter the numbers you hear in the text input box located after the PLAY button or audio control. If your focus isn't automatically set on the text input box after pressing the PLAY button, tab to proceed to it. When you’re done entering the numbers from the audio, press ENTER or click on the “Verify” button to submit your answer.
If your answer is incorrect, you will be presented with another audio challenge.
audio challenge after a failed attempt, the focus is set on the error messagemobile audio challenge after a failed attempt, the focus is set on the error message
If your answer is correct, the audio challenge will close and the reCAPTCHA checkbox will become checked. ReCAPTCHA will also notify the screen reader of the successful verification.
reCAPTCHA checkbox checked after successfully completing a verification challenge
Please note that the verification will expire after some time and you will need to start over if this occurs. You will be notified if the verification expires.
reCAPTCHA checkbox unchecked after the verification expires
Tips
If the audio doesn’t play, try downloading the audio by locating and clicking on the Alternatively, download audio as MP3 link.
While in the text input box, you can press the “R” button to replay the audio from the beginning
To get a different audio challenge, locate and press the Get a new challengebutton.
The reCAPTCHA verification expires after a certain amount of time so it is best to complete the reCAPTCHA verification last on a website you are accessing.
Some screen readers may have difficulties getting into forms mode, if this happens, please use your screen reader’s functionality to force forms mode.
reCAPTCHA ARIA Status Messages
Status message
Detailed description
Recaptcha requires verification
The initial state, reCAPTCHA verification is required to proceed on this website. Click the checkbox to get a verification challenge.
Opening verification challenge
The checkbox has been clicked and a challenge is loading. You are instantly verified if the status changes to “You are verified”. Otherwise, you are required to complete a verification challenge.
Verification challenge expired, check the checkbox again for a new challenge
The verification challenge expired due to timeout or inactivity. Click the checkbox again for a new challenge.
You are verified
You have been verified. You can now proceed on the website.
Verification expired, check the checkbox again for a new challenge
The verification expired due to timeout or inactivity. Click the checkbox again for a new challenge.
This CAPTCHA is too hard
Don’t worry. Some CAPTCHAs are hard. Just click the reload button next to the image to get another one.
My computer is sending automated queries
Our unusual traffic help page describes what to do if you see this message:
"We're sorry, but your computer or network may be sending automated queries. To protect our users, we can't process your request right now."
Help for reCAPTCHA users
Browser requirements