Facial similarity speaks of concerns about security, whereby mistaken identity can lead to unintended access or the revelation of private information. Beyond security, it is intriguing to probe into how tools may find celebrity look-alikes or even twins separated at birth. Now, let’s dive into the topic to know some face similarity checkers. But before that, have a basic understanding of what face comparison is.

What is face comparison online?

Basically, online face comparison refers to the digital process of taking at least two or more human faces to compare them and identify their similarities or differences. Face comparison is the identification of features of two or more persons based on such elements as the shape and form of the face, eyes, nose, and mouth, among other distinguishing features. 

These facial attributes are then quantified and matched through advanced algorithms such as technologies in face comparison tools, providing the level of similarity or the amount of dissimilarity between different faces. The technology is widely used for purposes ranging from security and identity verification to entertainment, such as finding celebrity look-alikes or discovering resemblances between family members.

Top 4 face similarity checker online free

As interest grows in face comparison technology, a variety of online tools are available to absolutely check for face similarity. Following are the top 4 online facial similarity-checking tools, along with step-by-step instructions. 

FaceComparison

FaceComparison ishas an effective online tool for face comparison with real-time similarity. Although the website contains some ads, an AI model is available for free with an accuracy of more than 99%. A user can upload two photos and results will be available immediately. There will be more than 80% similarity to ensure the same person. We uploaded two pictures from two people, and the result was accurate.

Here is how:

Step 1. Go to the website and upload two photos of the same or different persons.

Step 2. Wait for the result.

FaceShape 

FaceShape’s Face Compare tool allows one to measure the similarity of faces with very high accuracy and further estimates an approximate age after photo upload. The results are astoundingly accurate, even going as low as 0 similarities when totally different subjects have been compared, proving high-end face recognition technology and accuracy. And luckily, the website is clean and doesn’t have ads, which is great to use. 

Here is how:

Step 1. Go to the website and upload two photos.

Step 2. It will give you the person’s age.

Step 3. Wait for the comparison result.

FamilySearch 

FamilySearch’s CompareMe is an online tool from the genealogy organization FamilySearch, the operating branch of The Church of Jesus Christ of Latter-day Saints. Using this tool, you are able to compare two photos for a likelihood of the person to find out if you are relatives. Alternatively, you can compare your photo with that of a celebrity to check the similarity. People can either log in, sign up for an account, or use CompareMe as a guest. Principally, it is used for genealogical purposes to find possible matches in family photos.

Here is how:

Step 1. Go to the website and register your account.

Step 2. Upload your photos to compare or you can choose to upload your photo and find a historical person that is similar to you.

Pictriev  

Pictriev Face Recognition Face photograph identity/ similarity can be determined between two faces. It facilitates the provision of picture URLs or uploads directly. Its interface is clean, without ads, but a bit dated. The facial area needs to be selected manually. It seems that its accuracy may vary. Hence, compared to the above tools, it’s less accurate in similarity. But the identity check is correct in that they are two different persons.

Here is how:

Step 1. Upload two photos and you need to select the facial areas.

Step 2. Choose the similarity or identity to check and get the result.

Compare two faces on mobile phone

After viewing some online face compare tools, since we nowadays use more mobile devices, here is an app that allows you to compare two faces right in your phone: Face/face

Face/face is a mobile application available at the Apple App Store. It estimates how alike two faces look, in terms of pictures uploaded from the device, using AI technology to analyze and measure in real-time the resemblance of the faces. Any user can select two faces, friends, family, or celebrities, to see how similar they really look. It offers an interactive and fun way to discover facial similarities.

Here is how:

Step 1. Download and install Face/face and choose two faces from your Photos.

Step 2. Wait seconds to get a similarlity result.

Best face comparison APIs 

The above are some more entertaining tools to use. Now, let’s view some best face comparison APIs. An API is a set of tools and protocols that allows integration between various software applications to communicate and interact with each other. Amazon Rekognition API and Microsoft Azure Face API are the two most popular and leading APIs that are used in face comparison tasks.

Amazon Rekognition API 

Basically, Amazon Rekognition is a deep learning-based image and video analysis service backed by Amazon Services. It identifies persons, objects, textures, and activities from the given images and videos. In addition to this, it recognizes celebrities and matches them across both images and videos. More importantly, it can be combined with a great number of applications—from surveillance systems through autonomous vehicles to e-commerce platforms—to stretch their functional bandwidth and provide end-user experience.

Microsoft Azure Face API

The Microsoft Azure Face API is a cloud-based service offered by Microsoft that offers facial recognition capabilities, hence being able to detect, identify, and authenticate human faces present in both images and videos. The API uses a facial recognition algorithm based on deep learning in analyzing facial features for face matching, which, therefore, enables tasks such as the detection of a face, verification, and facial attribute analysis. Due to the face-based search, Azure Face API offers a variety of use cases from security, law enforcement, marketing, and entertainment industries where these applications can be developed by the developer.

Compare face similarity checker online

So, for you to choose a suitable face comparison checker, here is a summary. 

ToolEase of UseResult AccuracyProcessing Time
FaceComparisonEasyHigh (>80% accuracy)10 seconds
FaceShapeEasyHigh (>85% accuracy)15 seconds
FamilySearch CompareMeModerateModerate5 seconds
PictrievModerateModerate30 seconds.

Use cases of facial comparison

Facial comparison is now being utilized in various industries and aspects wherein its main uses are: 

  • ID Verification: Ensure secure access to only authorized personnel. 
  • Celebrity Look-alike: It is an aspect that identifies you with famous persons, providing entertainment.
  • Law Enforcement: Helps in the identification of suspects for criminal cases.
  • Genealogy: It helps in tracing the ancestry or lineage of a family and in establishing the relationship through facial features.

FAQ

How does compare a face work?

A face comparison works on the basis of a combination of complex biological processes involving facial muscles, bone structure, and skin features. Face recognition technology identifies faces using unique facial landmarks and features that are processed through algorithms.

How to check face similarity?

Facial recognition software/tools are usually used to check on face similarity. These programs check for facial features, which include eye-spacings, nose shape, and the degree of curvature of the jawline, in order to compare two faces and test whether they are alike or not. You can use the above-mentioned tools to have a face check.

Can I use face match in biometric or ID verification

Yes. Face match is used for biometric systems and in ID verification. It can be used to ensure security, control access, and verify identity, among other purposes. Facial biometric recognition is considered a safe means of identification and efficient, as no two individuals have the same facial features.

Conclusion

Facial comparison algorithms have undergone significant advancements, finding application across diverse domains such as security, identification, entertainment, and more. Hence, these tools, app, APIs mentioned above not only serve practical functions like safeguarding identities and verifying individuals in secure environments but also cater to playful pursuits such as finding celebrity look-alikes or exploring familial resemblances. Whether you seek robust security measures or simply enjoy the fun of discovering facial similarities, there’s a tool available to meet your specific needs and interests. 

By Dolores Xiao

I am a content creator and marketer with over 5 years of professional writing experience. I hold a bachelor's degree in communications and have a natural curiosity about technology, as evidenced by my technology blog. As an avid traveler, I draw upon adventures in over 10 countries to inject unique cultural perspectives into my articles and social media campaigns. I thrive on developing engaging content that informs and inspires audiences.