Video Resizer

Reframe one video for Reels, TikTok, Shorts, Instagram feeds, YouTube, or your website.

100% free
No signup needed
Browser-based

Why use Jupitrr's online video resizer?

Every platform shape

Vertical 9:16, square 1:1, portrait 4:5, and landscape 16:9 presets built in.

Crop or pad, your call

Fill the frame and crop the edges, or keep the whole video visible with padding.

Stays on your device

The video is processed locally by your browser and never sent to Jupitrr.

How it works

Add your source video

Choose the video you want to repurpose for another platform or placement.

Pick a frame

Select vertical, square, portrait, or landscape, then crop to fill or keep the complete video with padding.

Resize and download

Preview the framing, process the video in your browser, and download the resized copy.

What is a video resizer?

One recording, every aspect ratio.

A video resizer reframes a video from one aspect ratio to another, so a single recording can be published on platforms with different shapes. With Jupitrr's Video Resizer, you pick a frame, choose Fill and Crop or Fit with Padding, and the reframed video is processed in your browser and ready to download.

The presets cover vertical 9:16 at 1080 by 1920, square 1:1 at 1080 by 1080, portrait 4:5 at 1080 by 1350, and landscape 16:9 at 1920 by 1080.

When to reach for it

Instagram Reels

Vertical 9:16 at 1080 by 1920, ready to post.

TikTok and Shorts

Turn a landscape recording into a phone-filling vertical.

Feed posts

Square 1:1 and portrait 4:5 crops for in-feed video.

Websites and embeds

Landscape 16:9 for pages, decks, and players.

Frequently asked questions

Which size should I use for Reels, TikTok, and Shorts?

Choose Vertical 9:16 for Instagram Reels, TikTok videos, and YouTube Shorts. This fills a modern phone screen and exports at 1080 by 1920.

What is the difference between Fill and Crop and Fit with Padding?

Fill and Crop covers the complete output frame, which can trim edges when the source and target shapes differ. Fit with Padding keeps every part of the source visible and adds empty space where needed.

Does resizing reduce video quality?

The output is re-encoded, so a small amount of quality change is possible. The tool uses a high target bitrate for resized videos to preserve useful visual detail.

Does Jupitrr upload or store my video?

No. The video stays on your device and is processed locally by your browser. It is not sent to Jupitrr for resizing.

Can I resize a MOV or WebM video?

Yes, if your browser can decode the file. MP4, MOV, WebM, and M4V can be selected, but codec support varies by browser and operating system.

Explore more tools

Video Compressor

Reduces video file size with adjustable quality and resolution controls.

Video to MP4 Converter

Converts browser-supported video files to MP4 or WebM on your device.

Video to MP3 Converter

Extracts the audio from a video and saves it as a real MP3 file.

Video Stitcher

Cuts unwanted sections out of clips and joins them into a single MP4.

See All Free Video Tools

Unlock the full video workflow with Jupitrr AI

Jupitrr brings planning, scripting, recording, editing, and publishing into a single tool. Built for coaches and consultants shipping video consistently.

AI Talking Head Video Editor