Omnikit
DevFilesMoneyAll tools
Ctrl K
Dev toolsFile toolsMoney calculatorsAll tools
HomeFile toolsTrim VideoReduce Video Size

Reduce Video Size

files

Shrink a video to the size you choose in MB, such as under 25 MB for email

Processed in your browser. Nothing is uploaded. Updated on 26 Oct 2026.

Email attachments stop at 25 MB, many upload forms at 10 or 16. Type the limit you have to meet and this page works out the bitrate that fits the video into it, sound included, with a small margin for the MP4 container. A target too small to watch is refused with the size that would work, and a file already under the target is handed back untouched. Everything happens on your device.

Next:
  • Take the sound out Take the sound out of a video and keep it exactly as it was recorded

How to reduce a video to a size in MB

1

Press Choose a video and pick the file.

2

Target size is already chosen under Export size, set to half of your file; type the number of MB you need instead, such as 25 for email.

3

If the target is too small for the length, the page says how many MB would work, or lets you pick 720p or 480p to fit.

4

Press Compress the video, then Download a file at or just under the target.

How Reduce Video Size works

Trim Video gives back the parts of a video you want: one clip, or up to twenty, downloaded separately or joined into one video.

Keep original quality is a true copy. The compressed frames are lifted out of the original container and written into a new one without being decoded, so the picture and sound are identical to the source rather than merely close to it, and a ten-second clip is ready in well under a second. The price is that a cut can only start where a keyframe already exists. The page measures the keyframe spacing in your file — six seconds apart is common on downloaded video, half a second on a phone recording — and snaps the start handle to real keyframes as you drag it, so the time shown is the time you get.

Adjust and Export size. Crop, rotate, mirror, change speed (0.25x to 4x, pitch kept), or shrink to 720p or a target size. All re-encode.

The rest of the article, and all 8 questions about Trim Video, are on the Trim Video page.

Frequently asked questions

Is my video uploaded to a server?

No. Reading, cutting and writing all happen inside this browser tab on your own device, and the page only ever loads the slices of the file it needs. A 10 GB recording never travels anywhere, which is why the tool keeps working when your connection drops after the page has loaded.

Can I cut several clips from one video at once?

Yes, up to twenty ranges from a single source in one run. Choose separate files and they arrive as a zip, or choose joined and they are written end to end into one video. Because every clip shares a codec and a resolution, joining them needs no re-compression on the copy path.

How do I turn a 16:9 video into 9:16 for Reels?

Pick 9:16 tall under shape, then choose Crop to fill the frame or Pad to keep the whole picture with bars beside it. Changing shape means every frame is drawn again and re-encoded, so expect roughly 40 seconds of work per minute of 1080p footage and a result very close to, not identical to, the source.

What files and sizes does it accept?

MP4, M4V and MOV files up to 10 GB and 6 hours, with H.264, H.265, VP9 or AV1 video. Frames over 4096 pixels a side are refused. One export can be up to 512 MB, because the finished file is built in the browser tab; save a longer part as several clips. WebM and AVI are not read yet, and a file the page cannot parse says so instead of producing a broken download.

Still stuck? Ask about Trim Video and anybody who knows can answer. No account needed.

More ways to use Trim Video

  • Trim VideoCut several clips out of one video, keeping the original quality where it can
  • Change Video SpeedSpeed up a video or make slow motion, from 0.25x to 4x, with the sound kept in pitch
  • Compress VideoMake a video file smaller at a lower bitrate or resolution, right in your browser
  • Video Kaise Cut KareVideo kaise cut kare browser me hi, bina upload kiye aur bina watermark ke

Same job, other tools: Add Background Music to Video – Lay a music track under the voice already in a video, at the volume you choose · Increase Video Volume – Make a quiet video louder, or softer, and keep every frame of the picture as it was · Combine AI Video Clips – Join Google Flow, Veo or other AI clips into one video in story order · GIF to MP4 Converter – Turn an animated GIF into a much smaller MP4 video, each frame kept for its own delay · Video to GIF – Cut up to 15 seconds out of a video and save it as a looping animated GIF · Video to Animated WebP – Turn up to 15 seconds of a video into a full-colour animated WebP, made in your browser.

Read about this

All guides
  • How to download Facebook videos and reels, the ways Facebook allowsFacebook lets you download your own reels and videos and save anyone's to watch later. Since September 2025 every new video is a reel. The steps for each.
  • How to download Instagram reels and posts, yours and other people'sInstagram's own Download button for public reels, saving to collections, and exporting every photo and video you posted. What each one gives you.
  • How to download videos from X (Twitter), the ways X allowsX Premium members can download videos whose uploader allows it, anyone can bookmark a post, and your own videos come back in your X archive.
  • How to download YouTube videos to watch offline, the ways YouTube allowsYouTube's own Download button works free in India for many videos, Premium unlocks the rest, and your own uploads come out of YouTube Studio as MP4.
  • How to turn a video you own into MP3, from YouTube, Instagram, Facebook or your phoneGet the video through the platform's own download or export, then take the sound out in your browser. What YouTube forbids, and why you get .m4a.

Related tools

All file tools
Add Audio to VideoPut a song or voice-over on a video to the millisecond, with the picture untouchedJoin VideosPut clips together into one video, copied frame for frame when they matchVideo WorkbenchCut, join and put music under video on one timeline, without losing qualityMOV to MP4 ConverterConvert MOV, MKV, WebM or GIF to MP4, copying H.264 video instead of re-encoding itGIF MakerTurn a short video clip or a set of pictures into an animated GIF on your deviceVideo StudioJoin clips with transitions, add a logo and voice-over, cover stray text, in the browserVideo to JPGSave frames from a video as JPG pictures: one paused moment, or many in a zipLoop VideoRepeat a video clip several times or up to a set length, frame for frame, in your browser

In the collection Video Tools.

Was this tool helpful?
Omnikit

Small jobs, done in your browser. Free, fast and private. Files are never uploaded.

Files

  • Compress Image
  • Image to PDF
  • Merge PDF
  • Compress PDF
  • PDF to Word
  • Word to PDF

Dev

  • JSON Formatter & Validator
  • Base64 Encode & Decode
  • JWT Decoder, Verifier & Encoder
  • Password Generator
  • UUID Generator
  • Unix Timestamp Converter

Money

  • SIP Calculator
  • EMI Calculator
  • GST Calculator
  • FD Calculator
  • PPF Calculator
  • Lumpsum Calculator
GuidesQuestionsAboutHow we checkLaw library (beta)PrivacyTermsDisclosureContactMore: Exam practice (UGC NET Paper 1)Runs in your browser. Nothing is uploaded. © 2026 Omnikit (theomnikit.com)