Rescroll

Make any video square, 1:1.

A 1080×1080 square for Instagram, Facebook and LinkedIn feeds, from a wide or a tall video: crop it to fill the square, or keep it whole over a blurred fill.

  • 100% free
  • No watermark
  • No sign-up
  • Full quality
  • Files stay on your device

Loading the tool…

It runs in your browser. Nothing is uploaded.

How it works

How to resize a video, free, in three steps.

  1. 1

    Drop in your video

    Any MP4, MOV or WebM: a YouTube export, a phone video, a screen recording. It opens in your browser; nothing is uploaded.

  2. 2

    Choose the shape and the fill

    9:16 for TikTok, Reels and Shorts, 1:1 or 4:5 for the feed, 16:9 for YouTube. Keep the whole picture with a blurred fill or plain bars around it, or crop it to fill the frame and slide the crop where you want it.

  3. 3

    Download the resized MP4

    At 1080p, or up to 4K when your video has the detail for it. No watermark, and the sound is copied across untouched.

Why this one

Free, with nothing held back, and nothing uploaded.

Every platform's shape

9:16 (1080×1920) for TikTok, Instagram Reels, YouTube Shorts and Stories; 1:1 and 4:5 for Instagram and Facebook posts; 16:9 (1920×1080) for YouTube.

Blurred fill, not black bars

The whole picture stays in view, with a soft blurred copy of itself filling the space around it: the look you see on most reposted clips. Plain bars and full-frame crops are one click away.

Crop where it matters

Cropping a wide video to vertical? Slide the crop left or right to keep the speaker or the action in frame, and see it in the preview before you export.

Full quality, no watermark

The picture is drawn once at the new size and encoded at high quality; the sound isn't touched. Nothing is added: no logo, no watermark.

Your file is opened and processed by your own browser. It is never sent to a server, so it stays private, and there’s no upload to wait for.

Why post square video?

A square video takes up more of a feed than a wide one, on phones and computers alike, and it shows the same way on every platform without being cropped by the app. That's why it's still a favorite shape for Instagram, Facebook and LinkedIn posts.

This converter makes a 1080×1080 MP4 from any video. A centered crop suits most footage; slide it if the subject sits to one side. For slides or screen recordings, keep the whole picture with a blurred fill.

More from the video resizer

Video resizer

Change any video to 9:16, 1:1, 4:5 or 16:9 with a blurred fill or a crop. Full quality, no watermark.

Horizontal to vertical

Make a 16:9 video fit TikTok, Reels and Shorts at 9:16, with a blurred fill or a crop.

Vertical to horizontal

Put a 9:16 phone video in a 16:9 frame for YouTube or a TV, with a blurred fill at the sides.

Rescroll

Resizing is step one of repurposing.

Rescroll turns one long video into posts for every platform: it finds the best moments, reframes them vertically around the speaker, adds captions and gets each one ready to publish.

  • Finds the best clips in a long video
  • Reframes around whoever is talking
  • Captions and motion graphics on every clip
Try RescrollSee the AI video editor

Questions

The video resizer: your questions, answered.

What size is a square video for Instagram?

1080 × 1080 pixels (1:1). Instagram also takes 4:5 portrait posts at 1080 × 1350, which fill a little more of the screen; both are options here.

What size is a vertical video for TikTok, Reels and Shorts?

1080 × 1920 pixels, an aspect ratio of 9:16. All three play vertical video full screen at that shape, and it's what this tool makes when you choose 9:16.

Should I crop or add a blurred background?

Crop when the important part sits in one area of the frame, like one person talking: it fills the screen and looks native. Use the blurred background when everything in the wide frame matters, like a screen recording or a group shot, so nothing is cut off.

Does resizing lower the quality?

Changing a video's shape means re-encoding it, and this tool does that at a high quality setting. Making a picture bigger than it was can't add detail, so a 720p video stretched to fill a 1080p frame will look as soft as the original.

Is this video resizer really free?

Yes. There's no price, no trial, no account and no limit on how many files you do. The video resizer runs on your own device, in your browser, so it costs us nothing to run and we don't charge for it.

Does it add a watermark?

No. The file you download has no watermark, no logo and no intro or outro added. It's your file, changed only in the way you asked.

Is my video uploaded anywhere?

No. The file is opened and processed by your browser, on your device, and never sent to a server: not to us, not to anyone. You can check: watch the Network tab of your browser's developer tools while it works, and you'll see the file is never sent anywhere.

How big a file can it handle?

There's no file size limit of ours. Files of several gigabytes work, because the file is read from your disk as it's needed rather than loaded all at once. What sets the pace is your device: a long 4K video takes longer on an older laptop than on a new one.

Which browsers does it work in?

Current versions of Chrome, Edge and Safari, and Firefox on a computer: any browser with the WebCodecs API for encoding video and sound. Some files, like iPhone HEVC video, need Chrome, Edge or Safari to decode. A computer is much faster than a phone for long videos.

More free tools for your videos

Silence remover

Cut the pauses and dead air out of any video or recording, automatically. Full quality, no watermark.

Video compressor

Shrink any video to a target size or quality as an MP4 that plays everywhere. No upload.

Extract audio from video

Save any video's sound as MP3, WAV or M4A, the original copied untouched where possible.

Video trimmer

Cut the start and end off any video, frame-exact or lossless with no re-encoding.

Loudness normalizer

Bring any audio or video to −14, −16 or −23 LUFS, peaks held under −1 dBTP. Video untouched.

Keep reading

Where to go next.

AI video editor

The whole edit from a sentence: silences and bad takes cut, captions, color, zooms and graphics.

AI motion graphics

Counters, charts, app screens and maps designed from a description, on your own video.

All free tools

Video and audio tools, and 48 motion graphics generators. All free, all in your browser.