How to Cut and Trim Videos Online

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How to Cut and Trim Videos Online: A Complete Guide

Learn how to cut, trim and shorten video files online, remove unwanted parts, choose the right video format, and prepare videos for sharing, social media and websites.

Updated September 2026 Video Guide

Need to Cut a Video?

Quickly trim or cut a video directly in your browser with our free Video Cutter .

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What Is Video Cutting?

Video cutting is the process of removing unwanted sections from a video file or keeping only a selected portion of the original recording.

For example, you may want to remove the beginning or end of a recording, shorten a long clip, remove an unwanted section, or create a shorter video for sharing online.

A browser-based video cutter can make this process simple without requiring a full desktop video editing application.

Video Cutting vs. Trimming

The terms cutting and trimming are often used interchangeably, but they can describe slightly different editing actions.

Trimming

Trimming usually means removing content from the beginning or end of a video while keeping the section between two selected points.

Cutting

Cutting can refer more generally to separating or removing a section of a video to create a shorter clip.

For simple editing tasks, both methods can help you quickly create a shorter version of an existing video.

Why Cut or Trim a Video?

There are many reasons to shorten a video before uploading, sharing or storing it.

  • Remove unwanted footage from the beginning or end.
  • Create a short clip from a longer recording.
  • Remove pauses or unnecessary sections.
  • Prepare a video for social media.
  • Create a shorter clip for a website or presentation.
  • Reduce the duration of a recording before sharing it.
  • Keep only the most useful part of a long video.

How to Cut a Video Online

Cutting a video online can be done in a few simple steps. The exact interface may differ between tools, but the general workflow is similar.

  1. Choose your video.

    Select the video file you want to edit from your computer, smartphone or tablet.

  2. Set the start point.

    Select the point where the section you want to keep should begin.

  3. Set the end point.

    Select where the desired section should end.

  4. Preview the selected section.

    Check the beginning and end of the selection to make sure the correct part of the video will be kept.

  5. Cut the video.

    Start processing the selected section and wait for the video to finish.

  6. Download the result.

    Save the shortened video to your device when processing is complete.

How to Choose the Part of the Video to Keep

Before cutting a video, decide exactly what you want to keep. This is especially important when working with long recordings where several seconds can make a noticeable difference.

Check the beginning

Make sure the selected start point does not remove important content. If the video begins with an unnecessary pause, countdown or blank screen, moving the start point forward can create a cleaner clip.

Check the ending

The same applies to the end of the video. You may want to remove an empty section, outro, pause or accidental footage.

Preview before saving

Always preview the selected section when possible. Checking the beginning and ending before processing can help prevent accidental cuts.

Does Cutting a Video Reduce Quality?

Cutting or trimming a video does not necessarily mean that the final video will have lower visual quality. The result depends on how the video is processed and whether it is re-encoded.

If a video is re-encoded during processing, the selected output settings can affect quality and file size. Stronger compression may create a smaller file but can also introduce visible artifacts.

When quality is important, choose reasonable output settings and avoid unnecessary repeated conversions.

Can Cutting a Video Reduce File Size?

Yes. Removing part of a video reduces the amount of video content that needs to be stored. However, the final file size also depends on the codec, bitrate, resolution, audio settings and whether the video is re-encoded.

If you need to make a video significantly smaller, cutting it can be combined with video compression or conversion.

For example, you can first trim an unnecessary section and then use the Atlasaro Video Converter to convert the video using suitable output settings.

Which Video Formats Can Be Cut?

Browser-based video editing tools may support different formats depending on their underlying processing technology. Common video formats include MP4, WebM, MOV, MKV and AVI.

MP4

A widely supported format suitable for websites, devices and general video sharing.

WebM

A web-focused video format commonly used for browser playback.

MOV

A common format associated with Apple devices and video production workflows.

MKV

A flexible multimedia container that can contain video, audio and subtitle streams.

AVI

An older multimedia container that remains supported by many applications.

Are Online Video Cutters Safe?

The privacy of an online video editing service depends on how it processes uploaded files. Some services send videos to a remote server, while browser-based tools can process files locally on the user’s device.

Before processing private or sensitive footage, check how the service handles your files, whether videos are uploaded, how long files are stored, and whether they are deleted after processing.

Atlasaro’s browser-based video tools are designed to process supported files directly in the browser, avoiding the need for a traditional server-side video upload during processing.

Frequently Asked Questions

How can I cut a video online?

Choose a video file, select the start and end points of the section you want to keep, process the video, and download the resulting clip.

Can I cut a video without installing software?

Yes. Browser-based video cutters can allow you to shorten supported video files without installing a separate desktop video editor.

Can I trim the beginning and end of a video?

Yes. Trimming normally involves selecting a start and end point and keeping the section between them.

Does cutting a video lower its quality?

Not necessarily. Quality depends on how the video is processed. Re-encoding can change quality depending on the selected encoding settings.

Can cutting a video make it smaller?

Yes. Removing part of a video reduces its duration and can reduce the resulting file size. The final size also depends on encoding settings.

What video formats can I cut?

Supported formats depend on the video cutter. Common formats include MP4, WebM, MOV, MKV and AVI.

Can I cut a video on my phone?

Yes. A browser-based video cutter can be used on a compatible smartphone browser without requiring a dedicated desktop application.

Cut Your Video Online

Remove unwanted parts and create a shorter video directly in your browser with the free Atlasaro Video Cutter.

Open Video Cutter

This guide is provided for informational purposes and explains common video cutting and trimming workflows.

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