ConvertPort
Free online video trimmer

Trim Video Online

Upload a video, drag the timeline handles to choose the exact start and end, preview the selection, and export only the clip you need — without uploading your file to a server.

Interactive timeline previewDrag start & end handlesExport selected seconds onlyPrivate on-device processing

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ConvertPort's free video trimmer lets you cut a video clip online without desktop software. Upload a long recording — even a 25-minute file — drag the timeline to isolate the 15 seconds you need, preview the selection, and download only that segment. Everything runs locally in your browser for privacy.

How to trim a video online

  1. Upload

    Drop or browse for an MP4, WebM, MOV, MKV, or AVI file up to 500 MB and one hour long.

  2. Select

    Drag the start and end handles on the timeline, or drag the highlighted range to move your selection across the video.

  3. Preview

    Scrub the timeline and play the selected range to confirm you captured the right moment.

  4. Export

    Click Export clip to create a new file containing only the selected seconds and download it instantly.

Popular use cases

  • Extract a short social clip from a long screen recording or webinar.
  • Cut out the intro or outro from a video before posting.
  • Save only the highlight from a longer mobile or camera recording.
  • Create a precise snippet for a presentation, email, or chat message.

Supported video formats

Upload MP4, WebM, MOV, MKV, or AVI. Export keeps the same general format when possible. Trimming uses stream copy when supported, so exports are fast and avoid unnecessary re-encoding.

Private browser-based trimming

Unlike server-side video editors, ConvertPort trims videos locally in your browser with ffmpeg.wasm. Your file is not uploaded, stored, or shared — ideal for personal recordings, client deliverables, and confidential footage.

Video trimming best practices

  • Preview the selected range before export so intro music, dialogue, or transitions start at the right moment.
  • For the fastest export, trim near keyframes when your source allows stream copy; re-encoding may be used as a fallback.
  • Keep a backup of the original file before trimming long recordings or irreplaceable footage.
  • Pair trimmed clips with cropped cover images using our image tools for a complete social media workflow.

Frequently asked questions about trimming videos online

Can I trim a long video and export only a short clip?

Yes. Upload a long video, drag the timeline handles to select the exact start and end, preview the range, then export. You download only the selected seconds — for example, 15 seconds from a 25-minute recording.

Is my video uploaded to your servers?

No. The trimmer processes videos locally in your browser with ffmpeg.wasm. Your file is not uploaded, stored, or shared.

What video formats are supported?

ConvertPort accepts MP4, WebM, MOV, MKV, and AVI uploads for trimming.

How accurate is the trim?

The timeline lets you select with 0.1-second precision. Export uses fast stream copy when possible, so cuts may align to the nearest keyframe in some files.

Is this video trimmer free?

Yes. ConvertPort's video trimmer is free with no registration, watermarks, or daily limits.

What is the maximum file size?

The browser-based trimmer supports videos up to 500 MB and one hour long. Very large files may take longer to process because the full file is handled locally.