12 Best Image Annotation Tools of 2023

12 Best Image Annotation Tools of 2023
Img. source: G2

As the use of artificial intelligence (AI) continues to grow, the demand for high-quality image annotation tools has never been greater. Image annotation is the process of adding metadata to images, such as labels or tags, to make them more easily recognizable and searchable by machines. This process is crucial for training AI models to recognize and classify images accurately.

With so many image annotation tools available, it can be challenging to determine which one is the best fit for your needs. To help you make an informed decision, we have evaluated and compiled a list of the top 12 image annotation tools of 2023.

In this article, we will discuss the criteria we used to evaluate these tools, the features and benefits of each tool, and how they compare to one another. We will also provide user reviews and ratings, pricing and subscription options, and information on integration with other software and platforms. Whether you're a data scientist, machine learning engineer, or computer vision researcher, this article will provide you with the information you need to choose the best image annotation tool for your project.

1. Introduction To Image Annotation Tools

Image annotation tools are crucial in computer vision technology, as they help to label and tag data accurately. There are various image annotation tools available to businesses looking to manage their visual content, including V7, Labelbox, Keylabs, Scale AI, SuperAnnotate, Dataloop, Hasty and Hive. Some of these tools offer a range of features like labeling for images and videos, text annotation and audio labeling.

Precision accuracy is essential in image annotation projects as it affects the quality of the dataset and AI/ML models. Therefore the selection of powerful and precise tool must be prioritized. Moreover collaboration on content can often get confusing without the use of annotation tools especially since there many annotators working together.

Market leaders for medical image annotation tools include Keylabs and V7 solutions which specializes in segmentation tasks that require high precision. However other past time objects or simple shapes can be less costly done with other options available today

In 2023 Annotation tool trend will favor project management taking into consideration internal difficulties like but not limited to communications between different departments, teams silos ... etc

Image annotation tool
Keylabs - Image annotation tool

2. Criteria For Evaluating Image Annotation Tools

When it comes to evaluating image annotation tools, there are several criteria to consider. These criteria include file formats and extensions, efficiency, functionality, formatting, application, and price.

File formats and extensions refer to the types of files that can be annotated using the tool. It's important to choose a tool that can work with a wide range of file formats and extensions such as JPEG, PNG, BMP, or TIFF. This will ensure that you can annotate any type of image data without having to convert it first.

Efficiency is another important factor when evaluating image annotation tools. Look for tools that offer features such as batch processing or automation capabilities which can save time and boost productivity in large scale annotations.

Functionality also plays a major role in determining which annotation tool is best suited for your project needs. Some key functionalities might include labeling objects and images for machine learning algorithms or performing semantic segmentation tasks on medical imaging. Be sure to choose a tool that has all the functionalities required by your specific project requirements.

Formatting should also be taken into account when assessing an annotation tool's effectiveness since output formatting will enable transparency throughout the review process with other team members or stakeholders within different platforms. A good annotating software should allow customization through options like fonts styles/ sizes color schemes among others.

Finally, cost is another key factor when evaluating an annotation tool as some may charge depending on the output size but those who come free may have little functions than their paid counterparts although when minimizing expenses there is always helpful freeware.

By carefully weighing these criteria against your project goals you'll be able to select the best image annotation tool for your needs helping improve chances of completing challenging projects whether in gaming ,Medicine ,Scientific research among others while saving both time & money leading increased success rates over competition or peers ultimately reaching better outcomes faster

3. Top 12 Image Annotation Tools Of 2023

Image annotation tools are an essential element for machine learning and computer vision processes. A good tool can assist in improving the accuracy of image recognition algorithms, thereby providing better results in terms of perception and analysis. Here is a list of top 12 image annotation tools that are most popular among both developers and businesses as we move towards 2023:

1. V7 - It is a user-friendly tool primarily used for object detection with AI-assisted annotating.

2. Labelbox - A versatile tool that provides support for various types of annotations like text classification, instance segmentation, polygonal segmentation.

3. Keylabs - is created by Keymakr platform that incorporates state-of-the-art, performance oriented and user friendly annotation tools with built in machine learning and operation management capabilities.

4. Scale AI- Scale AI allows their users to make various types of annotations on images including bounding boxes, key-points, cuboids, polygons.

5. SuperAnnotate - This platform gives users powerful tools such as semantic segmentation, key points and line drawing which can save time and increase accuracy.

6. Dataloop - An all-encompassing data management platform designed for fast-paced workflows with an easy-to-use interface.

7. Supervisely - With more than eighty annotation options organized into different categories such as binary segmentations or semantic segmentation; this open-source platform offers great flexibility to its users when analyzing medical imaging or video frames.

8. Hive Data - With customer-centric features such as cloud scaling capabilities; Hive Data provides an intuitive interface focused on customizations for specific use cases

9. CVAT - Computer Vision Annotation Tool (CVAT) is very popular among the open source community because it gives expanded capability for collaborative customers who may be working remotely from one another during the pandemic era.

10. LabelMe facilitates rectangle annotations by simply dragging mouse over vehicle interested section without zooming further portion manually

11. Labelimg – A Basic desktop-based user-friendly software that supports labeling popular image formats with rectangular bounding box for subsequent use in robotics, autonomous driving or deep learning

12. VoTT – It provides built-in support for transferring learned models from popular machine and deep learning models like TensorFlow and PyTorch.

In conclusion, choosing the right tool is important to increase labeling efficiency and ensure high-quality results for developers building an AI-based system. Each of the above-listed tools offers a unique set of features that meet specific needs, ranging from user-friendly interfaces, customizations options to open-source standards ensuring better use case productivity.

4. Features And Benefits Of Each Tool

When it comes to image annotation, there are several tools available in the market, each with its own set of features and benefits. Keylabs, for instance, is an advanced tool that offers both image and video annotation capabilities. The tool is easy-to-use and comes equipped with features like vector annotations and AI-assisted labeling.

Another popular tool is CVAT, an open-source image annotation platform developed by Intel researchers. It allows teams to collaborate on labeling tasks while also providing pixel-wise annotations and customizable workflows.

Encord Annotate is a unique automated platform that provides AI-assisted annotation services along with dataset management. This tool harnesses artificial intelligence algorithms to automate the process of data annotation while still allowing users to review outputs manually.

Dataloop is another versatile platform that offers both image and video annotations for various industries. The software integrates well with deep learning frameworks like TensorFlow or PyTorch, making it easier for data scientists focused on computer vision or natural language processing tasks.

Adobe Acrobat Pro DC is a well-known PDF editor but also offers powerful annotating features useful for businesses looking for pixel-by-pixel editing of PDF documents or images.

In summary, when choosing an image annotation tool, consider your team's specific needs such as ease-of-use, automated processes via AI-assistance, task customization (like workflows), proficiency in other deep learning framework integrations beyond python's native libraries like TensorFlow or PyTorch among others.

5. Comparison Of The Tools

When it comes to image annotation tools, there are many options available. Some of the most popular ones include V7, Labelbox, Keylabs, Scale AI, SuperAnnotate, Dataloop, Playment, Supervise.ly, Hive Data, CVAT, LabelMe and LabeIimg. Automated annotation platforms like Encord Annotate and MakeSense.AI are also gaining popularity in the market due to their convenience.

It’s important to note that data labeling tools come in several formats that can help data analysts label data in image text or audio formats for training ML models. Some annotations tools like VIA and VGG Image Annotator offer web-based annotation while others such as Keylabs offer image and video labeling designed for various industries.

When comparing these different options it's important to consider not only their feature offerings but also things like pricing plans availability of integrations extent of security measures offered level of user customization capacity amongst other factors before deciding on which will work best depending on your personal needs when working with large sets of complex image datasets for machine learning model development purposes

6. User Reviews And Ratings

User reviews and ratings play a crucial role in determining the effectiveness of any tool, including image annotation tools. According to 7% of reviews, "Easy to use" is the most positive aspect of Medical Image Annotation Tool. This highlights the importance of user-friendliness, simplicity and an intuitive interface for users to have a good experience while using such tools.

Keylabs is one such tool with a user-friendly interface that offers manual and auto-annotation features and polygon shape annotation capabilities. LabelMe is another popular open-source tool for polygonal annotation but with low precision. The increasing number of 2D image annotation tools indicates that AI and machine learning are gaining attention as part of advancements in modern technology.

A noteworthy mention is Prodigy, an AI-powered data annotation tool designed explicitly for machine learning models. The tool helps create training data sets by annotating large amounts of images, texts or audio recordings quickly and accurately. As these self-learning algorithms require large amounts of labelled training data to function effectively, versatile image annotation tools like Prodigy can enhance their abilities significantly.

In conclusion, user reviews tremendously impact our decision-making process when choosing effective software for your accuracy-driven businesses' needs. With more innovative image annotation tools being launched every year, staying abreast with new releases will help businesses make better-informed decisions when selecting optimal solutions that cater to specific requirements so they may maximize their results in fast-changing markets.

7. Pricing And Subscription Options

Image annotation tools have become essential for many businesses and individuals who work with images. Among the most popular annotation tools are V7 Labelbox, Scale AI, SuperAnnotate, Supervisely, and Hasty. Each tool offers unique features and pricing options to fit different budgets and needs.

Pricing and subscription options vary depending on the tool you choose. Some companies like Keymakr offer free versions of their software for basic image annotation tasks, while others like Plainsight offer enterprise packages that include video and document annotation services. Monthly subscriptions are also available from some providers such as Hasty or Supervisely.

For those who want project management assistance with their annotations tasks ClickUp offers a solution by providing task organization to help manage your teams' workflows. Adobe Acrobat Pro DC is another option for image annotations while Filestage provides collaborative annotations through its commenting feature giving team members a platform to provide feedback on images .

Other notable image annotation tools include Markup Hero, Annotate.io, zipBoard, PDF Annotator and Hive which all comes with the relevant features needed in image annotation tasks coupled varying pricing plans.

It's important to carefully evaluate the pricing structure of any image annotation tool you consider investing on so that it aligns with your budget alongside checking its key functionalities that could assist you in achieving great results in all Image Annotation related projects.

8. Integration With Other Software And Platforms

An essential aspect to consider when choosing an image annotation tool is its integration with other software and platforms. This can help streamline your workflow and increase productivity. Here are some tools that offer robust integration capabilities:

Adeptia's enterprise data integration tools allow non-technical business users to easily integrate data between various systems, including image annotation tools. This ensures that your images are seamlessly integrated with other data sources, such as customer relationship management (CRM) or enterprise resource planning (ERP) systems.

WSO2 Enterprise Integrator is an open-source hybrid integration platform that allows you to connect multiple applications, databases, and services together. It provides support for multiple protocols, formats, and connectors for easy image annotation tool integration.


Keymakr provides a suite of services which include image and document annotation as well as dataset validation. What’s great about Keymakr is the flexibility it offers in terms of data creation in its dedicated studio based on specific company needs. Their proprietary data annotation platform Keylabs is able to be integrated with any other software.

With these powerful integration capabilities added to their set of features which include accuracy in labeling & AI-assisted annotations , object detection , classification , segmentation , among others – you will no longer have to worry about manually exporting/importing images from one platform to another just so it would fit into your preferred workflows That’s just a few reasons why businesses use these advanced image annotation tools for their projects while ensuring ease-of-use is maintained .


In conclusion, image annotation tools are becoming an essential part of many industries, from healthcare to retail. With so many options available, it can be overwhelming to choose the right one for your needs. By evaluating the criteria we've outlined and considering the features, benefits, and pricing of each tool, you should be able to make an informed decision.

Remember to also take into account user reviews and ratings, as well as integration with other software and platforms you may be using. With the right image annotation tool, you can streamline your workflow, improve efficiency, and ultimately achieve better results.