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How to use Wondershare UniConverter (originally Wondershare Video Converter Ultimate)?
Learn the step-by-step guide below.

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How to Compress Video on Mac Without Losing Quality

Wondershare UniConverter for Mac (originally Wondershare Video Converter Ultimate for Mac) allows you to compress videos on Mac without losing quality. Video compression facilitates easy sharing as well as file storage as the size of the video becomes smaller. Wondershare UniConverter allows converting multiple video and audio files in batch. You can reduce video size by changing parameters like resolution, bitrate, encoder, quality and file size. The below step-by-step guide will teach you how to make a video smaller on Mac in 3 different ways with Wondershare UniConverter.

Method 1. How to Compress Videos on Mac Without Losing Quality

If you simply want to compress a single video quickly, this method can be used with very easy steps.

Step 1 Add A Video to Compress on Mac

Download, install and launch Wondershare UniConverter on your Mac. Choose the Compress Video option from the Toolbox section on the main interface.

launch Wondershare video compressor for Mac

A new Compress Video pop-up window will open, from where you need to click on the + sign to browse and load a video from Mac that needs to be compressed. You can also drag and drop your video to the interface directly.

add video for compression on Mac

Step 2 Customize Video Compression Settings

The added video will appear on the window with its details regarding format, size, and resolution. To reduce video size, you can move the progress bar to set the compress percentage and the values for File Size, Quality, and Bitrate will change accordingly. Alternatively, you can also select the values for these parameters manually. Change the Resolution and Format can also change the video output size.

customize video output size

Step 3 Preview and Compress Video on Mac

Click on the Preview button will help you to check the first 20 seconds of the compressed video. At the Save file: tab, choose Mac location where you want to save the converted video. Finally, click on the Compress button to reduce video size on Mac without quality loss.

compress video size easily on Mac

Method 2. Reduce Video Size on Mac Easily When Converting

If you are converting your videos from one format to the other, and at the same time, you wish to compress the video size, this method can be used. If compression settings are different for different files, this method works best as it supports customizing video size parameters one-by-one.

Step 1 Load Videos Need to Compress

Run Wondershare UniConverter for Mac and add the videos you want to convert and compress at the Convert section by clicking on the +Add Files button. You can also drag and drop the files.

add videos need to convert and compress

Step 2 Choose Target Format and Compression Settings

The details of the added videos appear at the Source tab. Next, from the Target tab, open the drop-down menu and select the desired video format and its resolution from the Video tab.

choose video format for compression

To reduce the video size, click on the Compress icon at the Target tab and a new pop-up window will open. At this window, select the File size and the Resolution of the file. You can even select the compress percentage by moving the progress bar and all the file parameters will adjust accordingly.

change video parameter to reduce size on Mac

Step 3 Reduce Video Size on Mac Easily

Click on the Preview button will help you to check the video quality for 20 seconds. Click on the OK button to confirm the settings while hitting on the Reset button to get the original file settings. Finally, click on the Convert All button on the main interface to convert and compress video size on Mac.

reduce video size mac

Method 3. Shrink Video/Audio Files on Mac in Batch

To reduce video size in batch on Mac, you can follow the steps below. This method also works on audio files to shrink size.

Step 1 Add Video/Audio Files to Mac Compressor

Launch Wondershare UniConverter on Mac and add videos or audio files by clicking on the +Add Files button on the Convert section. You can add multiple files to compress in batch at a time.

add video/audio files for compress in batch mac

Step 2 Customize Video/Audio Settings

Open the drop-down option at the Convert all tasks to: tab on the top-right corner, and choose the desired format also the resolution from the Video tab.

choose video format on Mac

Next, click on the editing icon and a new Setting window will open. Alternatively, you can also click on the +Create Custom button to open this Setting window. From here, you're allowed to change settings like Encoder, Resolution, Frame Rate, Bit Rate, and more others to shrink video/audio size. Click on the Create tab will confirm the settings.

change video/audio compression settings

Step 3 Shrink Video and Audio Files in Batch on Mac

The Target tab of the files will show the reduced file size of the videos. Choose Mac location for the converted videos at the Output tab. Finally, click on the Convert All button to start compressing video or audio file size on Mac. The Converted tab will also show you the compressed videos.

shrink video and audio files Mac

According to your needs, you can choose one of the above methods to compress videos on Mac with Wondershare UniConverter easily and quickly with no quality loss.

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