6 Best MP4 Online Compressors to Compress MP4 Online for Free

MP4 is one of the most widely used video formats today, compatible with computers, smartphones, social media platforms, and online video websites. However, as video resolution and recording length continue to increase, MP4 files are becoming larger, leading to issues such as upload failures, slow sharing speeds, and insufficient storage space.

If you don't want to install additional software, you can use an MP4 online compressor to reduce MP4 file size directly through your browser. This article will introduce several simple and effective ways to compress MP4 online and help you choose the right compression solution for your needs.

Part 1. Best MP4 Compressors Online

Online MP4 compression tools are ideal for quickly processing individual video files. They usually require no registration and work directly in a browser, making them a great choice for occasional video compression needs. Below are 6 of the most popular online MP4 tools.

1.1 FreeConvert

FreeConvert is a popular online file conversion platform that also provides an MP4 compression tool. It allows users to upload videos directly from their computer or cloud storage and reduce MP4 file size without installing additional software.

It is a practical choice for users who need to compress MP4 online for free for quick sharing, website uploads, or storage management. FreeConvert provides compression settings that allow users to balance file size and video quality.

Here is how to compress MP4 online for free without losing quality:

Step 1. Visit the FreeConvert MP4 Compressor website in your browser.

Step 2. Click the "Choose Files" button and upload the MP4 video you want to compress.

Step 3. Adjust the compression settings, such as video quality, resolution, or file size target, if needed.

Step 4. Click the "Compress Now!" button to start reducing the file size. Wait for the compression process to finish, then click "Download" to save the compressed MP4 file.

Advantages:

* Support online MP4 compression without installing software.

* Allow users to adjust video quality and compression level.

* Support multiple video input formats.

* Simple interface, suitable for quick processing.

Disadvantages:

* The free version has file size limitations.

* Compression speed depends on the internet connection.

* Advanced features require a paid plan.

1.2 Clideo

Clideo is a feature-rich online video editing platform that offers MP4 compression along with other tools such as trimming, merging, adding subtitles, and resizing videos. When compressing MP4 files with Clideo, users only need to upload a video, and the tool will automatically analyze the video parameters and compress it. For users who are not familiar with video encoding settings, this automated approach provides a more convenient experience.

Here is how to compress MP4 online for free via Clideo:

Step 1. Open the Clideo MP4 Compressor page in your browser.

Step 2. Click the "Choose file" button and upload the MP4 video you want to compress. Wait for Clideo to process and analyze your video automatically.

Step 3. Adjust the available compression settings and click the "Compress" button to start reducing the MP4 file size.

Step 4. Preview the compressed video and click the download button to save the file.

Advantages:

* Support direct online MP4 compression.

* Simple interface, suitable for beginners.

* Provide basic video editing features.

* Accessible on multiple devices.

Disadvantages:

* The free version may add a watermark to exported videos.

* Compression speed is affected by server performance.

* Advanced export features require a subscription.

1.3 ZAMZAR

ZAMZAR is a well-established online file conversion platform that also provides video compression features. ZAMZAR allows users to upload MP4 files and convert them into other formats while reducing file size by adjusting video parameters. It is suitable for users who need simple video format conversion or basic file compression.

Here is how to reduce MP4 file size online for free via ZAMZAR:

Step 1. Open the Zamzar MP4 Compressor website in your browser.

Step 2. Click the "Choose Files" button and upload the MP4 video you want to reduce.

Step 3. Select the desired compression level and click the "Compress Now" button to start the process.

Step 4. Wait for Zamzar to finish processing the file. Download the converted video file once the process is complete.

Advantages:

* Support multiple file formats.

* Easy to use.

* No software installation required.

Disadvantages:

* Provide limited video compression control options.

* Processing speed is restricted for free users.

* Not suitable for batch processing large videos.

1.4 AnyMP4

AnyMP4 provides a collection of online multimedia tools, including an MP4 compressor designed to help users reduce video file size quickly. It is suitable for people who want to compress MP4 online without losing quality while keeping the process simple.

Unlike some basic online compressors, AnyMP4 focuses on maintaining a balance between file size and output quality. Users can upload an MP4 file, adjust compression settings, and preview the estimated output size before processing.

For users who need to compress MP4 video online for email attachments, websites, or social media platforms, AnyMP4 offers a straightforward solution without requiring professional video knowledge.

Here is how to compress MP4 online for free, with no watermark, using AnyMP4:

Step 1. Visit the AnyMP4 Online Video Compressor website in your browser.

Step 2. Click the "Upload File" button and import the MP4 video you want to compress. You can also drag and drop the video file directly into the tool.

Step 3. Adjust the compression settings by moving the slider to reduce the video size. You can also enter a specific target file size if needed.

Step 4. Customize other output settings, such as video format and resolution, based on your needs.

Step 5. Click the "Save" button to start compressing the MP4 file.

Step 6. Once the compression is complete, download the smaller MP4 file to your device.

Advantages:

* Support fast MP4 compression.

* Simple and easy-to-follow operation steps.

* Allow users to preview the compression results.

Disadvantages:

* The online version has relatively limited features.

* Lack advanced encoding parameter adjustments.

* Processing large files may take longer time.

1.5 Compress2Go

Compress2Go is an online file compression tool that focuses on reducing file sizes and supports video compression, including MP4 files. Its main advantage is that it requires no complicated settings; users can start compressing videos immediately after uploading them. It is a user-friendly option for those who simply want to quickly reduce MP4 file size.

Here is how to compress large MP4 online for free with Compress2Go:

Step 1. Visit the Compress2Go Video Compressor page in your browser.

Step 2. Click the "Upload your file" button and upload the large MP4 video you want to compress.

Step 3. Enter your desired target file size in the "Set file size (MB)" box to reduce the MP4 video size.

Step 4. Click the "Start" button to begin compressing the video.

Step 5. Wait for the compression process to finish, then download the compressed MP4 file.

Advantages:

* Free to use online.

* Support MP4 compression.

* Simple and straightforward operation process.

Disadvantages:

* Limited customization options.

* Limited control over compression quality.

* Not suitable for professional video processing needs.

1.6 Video Candy

Video Candy is an online video editing platform that provides various tools, including video compression. Users can directly upload MP4 videos and complete the compression process through a browser. In addition to compression, VideoCandy also offers editing tools such as trimming, resizing, and adding music.

Here is how to compress MP4 online more than 1GB via Video Candy:

Step 1. Open the Video Candy MP4 Compressor page in your browser.

Step 2. Click the "SELECT FILE" button and upload the MP4 video you want to compress. You can also drag and drop the video file directly into the tool.

Step 3. Wait for VideoCandy to automatically process and compress the uploaded MP4 video. The tool is designed to reduce video file size while maintaining video quality.

Step 4. Preview the compressed video result and check whether the file size and quality meet your needs.

Step 5. Download the compressed MP4 file to your device.

Advantages:

* Support online video processing.

* Integrate multiple video editing features.

* Suitable for basic video modification needs.

Disadvantages:

* Limited compression parameter adjustments.

* Processing large files may be slow.

* Advanced features are restricted.

Part 2. Best Desktop MP4 Compressor

Although online tools can compress MP4 files easily for free, they are not always the best choice for handling large videos. Many online compressors limit file sizes, require longer upload times, or provide fewer options for controlling output quality. For users who need to compress high-resolution videos, process large files, or maintain better video quality, desktop software offers a more reliable solution.

Video Converter Ultimate is a video processing software available for Windows and Mac. In addition to format conversion, it also provides video compression features. It allows users to adjust video size, resolution, bitrate, and format, helping reduce MP4 file size while preserving video quality as much as possible.

Key features of Video Converter Ultimate：

• Support compressing various video formats, including MP4, MOV, AVI, and MKV.
• Allow users to adjust video size, resolution, and bitrate.
• Support previewing compression results.
• Support batch processing of multiple video files.
• Use hardware acceleration to improve processing speed.
• Provide additional video editing and conversion features.

Here is how to compress MP4 video without losing quality using Video Converter Ultimate:

Part 3. Online MP4 Compressor vs. Desktop MP4 Compressor

Both online MP4 compression tools and desktop software can reduce video file size, but they are designed for different use cases. The following are the main differences between online MP4 compression and desktop MP4 compression.