There are tons of reasons why you want to compress a video on an iPhone 16/15. Some people like to compress their videos to send via email or upload to social media easily, or maybe just want to save space on their iPhone. For any reason, you may have to compress video on iPhone 16/15.
Thankfully, there are many ways yo ucan use to compress videos on iPhone. Although some apps can ruin the quality of your videos when you compress them, there are still applications that you can use to compress your videos losslessly. So, if you want to learn how to compress a video on an iPhone, read this post thoroughly.

Part 1: 4 Ways on How to Compress a Video on iPhone
Compressing a video on an iPhone is not difficult, especially if you have the easiest-to-use applications. Also, video compression is necessary if you want to save space on your device. If you are having trouble looking for the best video compressor app to use, read this section. We will also teach you how to compress a video on iPhone 16/15 using the best video compressor apps on the App Store.
1. How to Compress a Video on iPhone with iMovie
Maybe you don't have to install a third-party app on your iPhone 16/15, for iMovie might help you compress video on iPhone. Although it has no compression feature, you can decrease the resolution of a video to reduce the size. Check how to compress a video on iPhone using iMovie.
Step 1 Open iMovie on your iPhone 16/15 and tap Start New Project and choose Magic Movie. Then, you can add a video to iMovie and start compressing video on iPhone 16/15.
Step 2 Now, the video should be added, and you don't need to edit the video, just tap the Export and Share button in the top right corner, and then choose Share Video.

Step 3 When you are sharing the video in iMovie, you can tap the Options button and choose a lower resolution to compress the video on iPhone with iMovie.

2. How to Compress a Video on iPhone with Shortcuts
Shortcuts is an app that gathers many convenient methods or tricks to deal with many data-related tasks. Of course, you can use this app to compress video on an iPhone. However, Apple doesn't offer a built-in video compression feature in Shortcuts, so you have to download the add-on manually. You can search for the keywords video compression and Shortcuts in Safari and download a video compression plug-in. Then, you can start compressing video on iPhone in the Shortcuts app.
Step 1 Choose a video in Photos and tap the Share button. Then, you should choose Compress Video, which is a Shortcuts feature.
Step 2 Then, you can choose a desired resolution. After that, you can compress the video on iPhone in the Shortcuts app.

3. How to Compress Video on iPhone with Compress Videos & Resize Video
If you need an app for compressing videos, then Compress Videos & Resize Video might be the app you are looking for. This app will help you to reduce video size on iPhone quickly. In addition, by using this app, you can adjust your video's frame rate or dimension to reduce the video file size. Also, it has a simple user interface, making it a user-friendly app for compressing video on iPhone.
Moreover, it supports the standard format for iPhones, like MKV and MOV. And in its pro version, you can batch compress two or more videos on iPhone simultaneously. Anyway, it is still a helpful app for compressing your videos on your iPhone.
How to reduce file size on iPhone using Compress Videos & Resize Video:
Step 1 Firstly, open your AppStore and search for Compress Videos & Resize Video. And then, install the app on your phone. After installing the app, open it.
Step 2 On the app's first interface, tap the Select Video to Compress button. And then, choose the video you want to compress, and tap the Next button at the top-right corner of your screen.
Step 3 And then, you will see two adjusting options: Frame Rate and Video Dimensions. In this tutorial, we will adjust the Frame Rate of your video. The bigger the frame rate, the bigger your video file size. Press and drag the controller to your preferred percentage to reduce the video size.
Step 4 Lastly, tap the Compress button to begin compressing your video on iPhone easily.

4. How to Compress Video on iPhone with Video Compressor - Reduce Size
Another amazing video compressor app to reduce video size for iPhone is Video Compressor - Reduce Size. If you want to compress iPhone videos on iPhone for email, this app will help you. Moreover, using this app's video compressor, you can select from the quality presets the size percentage you want your video to have. What's more, it is a beginner-friendly app because it has an easy-to-use user interface. The advantage of this application is that it also has a feature to compress image files saved on your Photos app.
Furthermore, it supports iPhone devices' file formats, like MOV and MKV. But Video Compressor - Reduce Size has a little drawback. It contains ads and does not have editing features. However, it is still an excellent app for compressing videos on iPhone for free.
How to reduce video size on iPhone using Video Compressor - Reduce Size:
Step 1 Download and install Video Compressor - Reduce Size on your iPhone device. Once installed, open the application on your iPhone.
Step 2 Select the video you want to compress on the main interface, then tap the Compress button.
Step 3 After tapping the Compress button, a list of video quality presets will appear. The bigger the percentage, the more the video file size will be reduced. We will select the Medium Quality Video (30%-80%) in this example.
Step 4 Finally, wait for your video to finish compressing, then tap the More button if you want to export or make further changes to your video.

And that's it! Those are the two easy ways to compress an iPhone video using the best video compressor apps for iPhone.
Part 2: Bonus: How to Compress Videos on Computer for iPhone
Compressing videos using a computer is easier because you have a wider screen to operate the video compression process. And if you ask if it is possible to compress videos for your iPhone, the answer is yes! You can send your iPhone video to your computer. Then, use the application we will present for video compression.
Tipard Video Converter Ultimate is the most reliable and easiest video editing software for Windows or Mac users. This fantastic tool has many advanced editing features, like a video compressor, video converter, 3D maker, GIF maker, and more. It's the best way to compress iPhone videos without losing quality on your desktop.
- Offer an AI-driven tool to compress iPhone video with only one click.
- Change your video's frame rate, format, resolution, and bitrate to compress it.
- Drag a controller to adjust the compression rate to compress your iPhone video.
- Support all video formats like MP4, MKV, MOV, AVI, WMV, and more.
How to compress iPhone videos using Tipard Video Converter Ultimate:
Step 1 Download and install Apeaksoft Video Converter Ultimate on your computer and launch it. Choose More Tools on the top ribbon. Then, select the Video Compressor feature.

Step 2 On the following interface, Click the Add button to import the iPhone video you want to compress.

Step 3 And on the next interface, you will see that there are many ways to compress your iPhone video. You can input a desired file size or drag the controller to adjust the compression rate.

Step 4 You can also reduce the resolution and bitrate to shrink video file size. To start compressing your iPhone video, click the Compress button. Then, wait for a few seconds, and your file is ready. This program can also help you compress Android video without losing quality.

Part 3. FAQs of Resizing Videos
How can I compress a video on iPhone for Gmail?
You can learn how to compress a video on iPhone in the 5 ways offered in this article. But there's also another way to email a video in Gmail without compressing video on iPhone. You can send your video from Google Drive in Gmail, then there's no video size limit.
Can I compress iPhone videos on a Mac computer?
iMovie is the most popular video editing tool for Mac that allows you to compress videos. It's not convenient to compress video on iPhone iMovie, but the iMovie on macOS can compress your iPhone video easily.
Can I compress a video on QuickTime?
Here are the steps to compress a video on QuickTime. Open the video you want to compress. Go to File> Export As, then select the Option you want.
Conclusion
If you want to learn how to compress video on an iPhone, you must read this post deeply. The four methods that we presented are simple and easy to compress your videos on iPhone. However, if you want to compress an iPhone video on your computer, Tipard Video Converter Ultimate is a must-have program. It supports all video input formats and use AI-driven techniques to compress videos without losing quality.