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Today, most content creators are repurposing old footage, breathing life into it to spark interest and garner views. Whether it's historical footage or classic cinema clips, old videos are resurfacing on the web, captivating younger generations to learn about history. In fact, video colorization is not limited to historical footage or archives; most people also use it to colorize personal family recordings and cherish their memories.
Wonder why video? These key statistics are enough to feed your curiosity.
As AI tools cut costs, their adoption has doubled from 18% to 41% in 2025. Now, most creators seek AI to simplify their work and maintain productivity in the cutthroat competition. Here’s why we have tested and compiled the list of 4 best tools to colorize video online free.
Restoring old, classic, or black and white video to color is no longer complex, as long as you employ reliable colorization tools to colorize video AI online free. Fortunately, advancements in AI can come to your rescue to colorize your dull clips and generate impressive results in seconds.
Here, we have tested and rounded up the 4 best black and white to color video converter online free to transform your dull memories and rediscover them in vibrant colors and visual tone. Let’s explore each tool one by one to examine its offerings and performance.
Note: We have shared our hands-on experience only for users on a low budget who are seeking free tools to test their capabilities.
Supported Platform: Online, web-based browser tool
Kolorize.cc is a next-gen AI colorization tool that can convert black and white video to color online free. It harnesses advanced AI technology to rediscover the dull memories in a fun and realistic way. Kolorize.cc utilizes cutting-edge AI to effortlessly transform dull and monochrome footage into vibrant, true-to-life colors. Whether you have cultural heritage videos, need to film colorization, or want to enhance historic footage, Kolorize.cc can deliver artistic results in seconds. Moreover, it adds depth and emotion using vivid colorization techniques.
We imported an 11-second, 5.6 MB MPEG-4 black-and-white video with dimensions of 1440 x 1080 to test the speed and performance of Kolorize.cc. Here’s how the whole ordeal went. It took approximately 12 seconds to upload and display on screen. The overall processing took approximately 40 seconds to generate the colorized preview. While no ‘preview’ was displayed on screen, we had to download the video to see the outcome.
The performance was actually poor. Though it produced colored results, there was nothing beyond colorization. The frames had visible distortions and noise with jitters. Plus, it deteriorated the original video quality. It produced a 768 x 576 resolution with a watermark.
Our experience with Kolorize.cc was sheer disappointment. The user interface was smooth, and it was pretty easy to work with the minimal options. It displayed the complete video information of the source content. It showed the resolution, frame rate, duration, total frames, and format. Ultimately, it dissected all the elements of the imported video clip. This black and white to color video converter online free, enables free users to produce a preview video. However, for that, it reduced the frames and frame rates from 261 to just 100. And from 23.816 frames/sec to 4 frames/second in a viewbox. Additionally, we had to compromise on our full HD resolution to 768 x 768 to examine the results.
On the contrary, to produce a full-colorized video at the original frame rate and resolution, we required two credits to process it. We proceeded with the free version to get a glimpse of the tool’s performance. However, interested users can avail themselves of their ‘Pay as you go’ subscription at US$0.49/credit or check out other subscription plans starting from US$9 for 10 credits.
Overall, we were not impressed with the results. Leaving the colorization aspect aside, our original video was far better with sharp edges, balanced brightness, and clarity in the content.
Pros
The download link expires automatically in 3 days.
Offers a free version to preview the colored result and download it to share with others.
Displays the complete information of the source video content.
Allows you to access previously colorized videos with a single click.
Works on all video types, be it historical documentaries, classic films, or cultural heritage videos.
Cons
The downloaded colorized result has a ‘Kolorize Sample’ watermark.
Lengthy processing time for longer-duration videos.
Requires purchasing credits to download the full video in 4K quality.
Does not process or color multiple videos at once.
Cannot play or trim and crop the video parts manually.
Does not deliver promised results (said 768 x 768 but generated 768 x 576 resolution).
Uses an expensive credit-based pricing that can surpass your budget to colorize multiple videos.
Works only with an active/stable internet connection to operate smoothly across all platforms and devices.
Supported Platform: Online, web-based browser tool
User Ratings on Trustpilot: 3.7/5
Many users opt for ai4video.co to turn black and white video into color online free. It saves users from the hassle of a formal software download by enabling them to perform operations in the cloud. The safe and convenient colorization tool requires no software or plug-ins. So, it is a reliable colorize video online tool for those without video editing experience. While the colorization process is straightforward, the end results may not meet your expectations. They may not align with the outcomes of advanced or specialized colorization tools. Furthermore, it lacks the fine-tuning and editing options available in professional software.
We took the same video as earlier to assess the speed and performance of this online tool. Surprisingly, the upload speed was quick, taking less than a second. However, we had to wait for approximately 60 seconds for the processing to complete. That was quite long considering the video’s length. Thereafter, it took an additional 15 to 18 seconds to download the colorized video clip.
Overall, the performance was satisfactory. Much better than other tools that colorize black and white video online free. The visual quality suffered due to imbalanced saturation and lighting. Even the colors weren’t accurate. They displayed an orange tone throughout the clip.
Going by its high user ratings, we were quite confident about the colorized results. Somehow, Ai4video.co did meet our expectations, but not exactly! To begin, we were introduced to a smooth UI. The interface had many options neatly arranged throughout the screen. And it was easy for us to choose the Video Editor tool for colorization. We were asked to sign up with our Google ID or create an account to turn black and white video into color online free. We received 20 credits, and 11 were used in video processing.
While colored, the colors didn’t seem appropriate.
It still gave that retro effect similar to the times when color technology was first introduced. The end result had a monochromatic, warm color tone with different shades, tints, and tones of orange. It lacked any color correction or color grading techniques. Overall, the clip appeared desaturated with muted colors.
Pros
Supports several formats, such as MP4, WebM, MOV, AVI, and GIF formats.
Offers several output parameters to get a tailored output.
Displays the preview before downloading.
No watermarks on the colorized output.
Does not alter the resolution or cut the video on its own.
Displays all the earlier tasks (from the last 7 days).
Does not require video editing skills to colorize the videos.
Cons
Colorization can’t proceed without signing up and receiving credits.
Restricts the maximum file size to 2GB.
The free version offers only 20 credits.
Lengthy processing time, took approximately 60 seconds to generate an 11-second colorized video.
Lacks advanced AI technology, requiring manual effort and intervention.
Requires a stable internet connection to colorize black and white video online free.
The output quality does not match the quality of specialized software.
Struggles with handling complex video scenes and intricate details effectively.
Supported Platform: Online, web-based browser tool
User Ratings on Trustpilot: 2.3/5
If you are looking to revitalize your cherished memories, HDconvert can be your best pick. Its unparalleled speed and precision restore the authenticity of the past videos with lossless encoding. Supporting a massive range of video formats, it ensures compatibility with different devices. HDconvert is renowned for enhanced visuals, HD quality, and a seamless colorization process. You can colorize video AI online free and relive the past events with a seamless colorization process. Powered by AI technology and an intuitive user interface, you get high-quality and vibrant results. Each frame preserves the essence of the source content.
Next, we tested the speed and performance of HDconvert’s free version. We took the same black and white full HD video. The upload speed was quick enough, taking less than a second to complete. Considering the processing time, it can vary for different users depending on the extent of manual adjustments. Still, it took over 30 seconds to generate the colorized results.
However, considering the tool’s performance, HDconvert stood below average. Undoubtedly, the video clip was colorized. But the colors lacked a modern appeal. Instead, it blended warm and cool colors, displaying the tints of orange, blue, and yellow in each frame.
Working with HDconvert was quite enjoyable, all because of its friendly interface. This black and white to color video converter online free also guided us in saving our preferences for various parameters. To begin with, we could select the output format as MP4, MOV, or MKV for our video. Similarly, this video colorizer allowed us to choose the output quality as well. However, in the free version, the maximum available quality was 1280 x 720 pixels (although it was actually generated at 960 x 780 pixels).
With HDconvert, we could also fine-tune advanced settings. And adjust the video compression level and codec to meet our specific needs. While the tool claimed that it would only colorize and generate the first 5 seconds of the input video in the free version, we were fortunate enough to obtain a 10-second clip. However, the absence of a preview window was duly missed. Anyway, we downloaded the result in high hopes for a surprise.
Although the output resolution was downscaled to 720p HD, the balance between brightness and contrast was impressive. Though the frames lacked sharpness, the clarity was visible. However, all this faded as the clip progressed. The colors appeared confusing and inaccurate. The desaturated, faded tones also gave it a retro appeal. The absence of color grading techniques was visible. Additionally, the lengthy watermark with a complete URL was disturbing.
Pros
Gives a glimpse into all the earlier uploaded files.
Enables selecting the output format for conversion.
Allows choosing the output quality.
Provides customized advanced settings to fine-tune codec and compression levels.
Automatically removes the output files after 24 hours.
Supports a free version to colorize and download the colored video output.
Cons
The free version can only process black and white videos in HD 720p.
Requires upgrading to the premium version to unlock full HD, Ultra HD 1440p, and Ultra HD 4K.
The colorized speed is slow, with up to 0.5x real-time.
Does not work with bulk video clips at once.
Does not let you trim the video section and works only with the chosen part.
No preview available to check the clip before downloading.
Requires logging in and account creation to colorize video AI online free.
The colorized clip generated in the free version has a watermark.
Supported Platform: Online, web-based browser tool
User Ratings on Trustpilot: 3.2/5
editingtools.io is a reliable way to colorize video using cutting-edge AI technology online. It helps reimagine the past. And turn black and white videos into color, bringing back the video elements to life. Its AI algorithms have been trained on millions of real photos to understand the range of colors and produce high-quality, realistic frames. However, you may lack a user-friendly interface, and it is not a tool that can AI colorize video online free. Moreover, you may need to wait several hours to view the output, as the processing is pretty slow.
Lastly, we had the opportunity to test editingtools.io. As it offers only 8 free credits, we took the same video and trimmed it to a 6-second length, resulting in a file size of 2.3 MB. It took approximately 6 to 8 seconds to upload the clip into the interface.
To render a standard resolution, it takes 6 AI credits, and 12 AI credits to render high resolution quality, with an estimated time of approximately 5 minutes.
Selecting the standard resolution quality, the processing time took nearly 2.5 minutes. That was too long, considering it was only a 5-second clip.
Considering the performance, editingtools.io did fairly well to colorize video online. The best part was that the output did not have any watermark.
Before testing editingtools.io, we were expecting high results, especially after reviewing their official page. However, the real ordeal started after the login process. Considering that users are seeking free solutions, we opted for the free version. On logging in with our Google credentials, we got 8 free credits. It gave us the freedom to test a video no longer than 8 seconds in standard resolution.
The user interface appeared pretty clean with minimal options. And we enjoyed working with the tool. Just the processing time took a bit too long. However, we were happy that the results were free from watermarks, unlike other tools that turn black and white video into color online free.
The colors appeared fine. However, they lacked a modern grace and appeal. It had a more retro vibe, characterized by monochromatic and warm colors. Additionally, the shades kept shifting during playback, as if adjusting the brightness and contrast in between. Given the results of the free version, we cannot expect much from the pro version; however, it’s your call.
Pros
Supports video formats of MOV, MP4, MPEG, AVI, WMA, M4A, and MXF.
Drag and drop functionality to select the desired black and white video file to colorize.
Offers bulk video processing.
The colorized output does not have a watermark.
Besides video colorization, editing.io offers other tools for photo customization and audio editing.
Cons
Only colorize real photos and film footage, doesn't work with videos of drawings and animations.
Limits the video file size to 2GB and a 20-minute input file upload size.
Requires signing up and creating an account to proceed with colorization.
Very expensive subscription fee, and the pricing lacks transparency, as you're required to contact the company for a customized quote.
Lengthy processing time (took 2.5 minutes to process a 5-second clip).
No preview available before downloading the final result.
The colored quality is nowhere near pro-grade software.
Colorize video online tools are great. However, they have limited output resolutions, which can impact professionalism. Plus, it has inconsistent colorization. Not only do the results vary, but they’re also unclear and missing sharpness and color accuracy. Even the intricate parts of images may appear flat after colorization. Overall, the colors are unnatural and distorted in complex scenes.
Besides that, most convert black and white video to color online free tools have functional limitations. They restrict users to basic functions, and even the resulting output has watermarks. Users have limited choices for file formats, resolutions, or frame rates. You cannot even ignore the time and frame constraints and slow rendering speeds. Most importantly, some free online tools may collect and share user data. This leads to privacy and data security risks.
In such a case, it is better to switch to reliable desktop colorize video software like UniFab Video Colorizer AI. The intuitive interface allows for smooth use of advanced tools and bulk video color editing. Not only does it curb the limitations of colorize black and white video online free tools, but it also offers professional-grade output with minimal effort.
UniFab Video Colorizer AI
Supported Platform: Windows computers 11/10/8.1/8/7
User Ratings: 4.1/5
UniFab AI Video Colorizer stands out as an exceptional colorization tool for transforming black and white videos into realistic colors. It utilizes deep learning to analyze the content and context of each frame and add vibrant colors naturally. It carefully identifies the objects, environments, and lighting to apply colors and maintain temporal consistency. Moreover, it assures there's no flickering or color shifts between frames. Whether you want to restore family memories, classic films, or historical footage, with UniFab, you get professional-quality video colorization quickly and precisely without manual effort. Besides that, this versatile and advanced video colorizer intelligently corrects color inaccuracies and restores faded tones to balance overall hues.
After testing all the tools that colorize video online free, we were quite hopeful with UniFab. Surprisingly, it took only 2 seconds to upload the video. Even the processing time was really quick, taking no more than 4 to 5 seconds.
Compared to the tools that convert black and white video to color online free, UniFab displayed a remarkable outcome. The sheer brilliance of its AI-infused technology spoke volumes. The visuals appeared realistic, as if the footage had been taken in the modern era with high-end equipment.
30-day free trial for full feature, without watermark!
Download UniFab from the official site. And click Colorizer on the main screen to import the black and white video to colorize.
Now, drag the progress bar to select the frame you wish to capture. Then, click the blue Capture button and tap Generate. UniFab will automatically analyze and generate four reference coloring effects. You can choose the one you like.
Adjust the video output position and click Start. UniFab will accelerate the GPU hardware technology and produce accurate results in moments.
Working with UniFab Video Colorizer AI was indeed fun. While it is a professional-grade Windows software, the UI was quite impressive. It wasn't cluttered with options. Rather, they were arranged neatly in an organized setup. There were barely any manual controls required. The AI took great care to ensure the results were accurate. The color accuracy, vibrancy, and hues were all spot-on. UniFab’s AI technology even balanced the sharpness, brightness, and contrast to ensure the results meet our expectations.
You have seen the detailed performance and speed test of all the tools that colorize video online free. Here’s a glimpse of all these tools to bring out the differences in common parameters. Let’s look.
| Colorizer Tools | Upload/Process Time | Output Resolution | Watermark | Preview Available |
| Kolorize.cc | Upload: ~12 sec Process: ~40 sec | 768 × 576 (downscaled) | Yes | No |
| Ai4video.co | Upload: <1 sec Process: ~60 sec | Original (no change) | No | Yes |
| HDconvert | Upload: <1 sec Process: ~30 sec | 960 x 720 (downscaled) | Yes | No |
| editingtools.io | Upload: ~6 - 8 sec Process: ~2.5 min (6 sec clip) | Standard (user selected) | No | No |
| UniFab Video Colorizer AI | Upload: ~2 sec Process: ~4 - 5 sec | Original or enhanced | No | Yes |
Whether you are into classic Hollywood films or need to revive memories from old family videos, employing AI-powered video colorization tools to colorize black and white video online free is the best that you can do. While we have discussed the top 4 black and white to color video converter online free, it's absolutely your call to pick the one that best matches your needs. We recommend trying UniFab Video Colorizer AI. Especially if you seek batch-mode processing with high-quality output and up to 16K scaling. Undoubtedly, it is ideal for family libraries and archives.
You can colorize a video online free by using AI-powered tools that automatically add color to black-and-white footage. Many platforms offer free services where you upload your video, and the system processes and colorizes it without any cost or technical skills required.
To colorize a video online, simply find websites that provide colorize video online services. These websites use advanced AI algorithms to analyze black-and-white videos and turn them into color automatically, making the process quick and user-friendly.
If you want to convert black and white video to color online free, you can use specialized online tools that offer ai colorize video online free features. They enable you to turn black and white video into color online free, restoring old videos with vibrant, realistic colors easily.