Instagram crops or letterboxes videos that are not in its shapes. Make the exact size yourself: 4:5 for the feed, 1:1 square, or 9:16 for Reels and Stories, at 1080 pixels wide, with the whole picture kept on a blurred background or cropped to fill.
Resize video for Instagram at a glance
| Price | Free, no sign-up, no watermark, no daily limit |
|---|---|
| Accepts | MP4 · MOV · WebM · MKV |
| Largest file | 2 GB per file |
| Where it runs | In your browser: files are never uploaded |
| Works on | Chrome and Edge, Safari 17+, Firefox 130+ on iPhone, Android, Windows, Mac and Linux |
| Send the result | Download it, or send it free with a link or by email (up to 20 GB) |
How to resize video for Instagram
- Choose or drop your video.
- Pick Feed 4:5, Square 1:1 or Reels 9:16.
- Keep “Fit on blurred background” to show everything, or choose Crop and slide the frame.
- Press Resize for Instagram, then save the MP4 to your phone and post it.
Instagram video sizes
| Where | Shape | Size made here |
|---|---|---|
| Feed post (portrait) | 4:5 | 1080 × 1350 |
| Feed post (square) | 1:1 | 1080 × 1080 |
| Reels and Stories | 9:16 | 1080 × 1920 |
4:5 is the tallest shape the feed shows in full, so it takes the most room on screen. The grid on your profile shows a centred crop of each post; keep the subject in the middle.
Why the blurred background
A landscape video in a 4:5 or 9:16 frame leaves empty space above and below. Instead of black bars, the tool fills it with a blurred, darkened copy of the same video, the look most creators use, so nothing of your picture is cut off. If the subject fills the frame, “Crop to fill” gives a bigger picture instead.
Upload-ready file
The result is H.264 video with AAC sound in an MP4, which Instagram accepts from phone and computer. It is made on your device, with no watermark and no account. For a video that is too long for a Reel, cut it first with Trim video; for other shapes, use Crop video.
How this compares
| This tool | Online converters (e.g. Clideo, FreeConvert or CloudConvert) | Desktop apps (e.g. HandBrake) | |
|---|---|---|---|
| Your file is uploaded | No | Yes, to their servers | No |
| Install or account | None | Account for some features | Install needed |
| Watermark or daily limits | None | Common on free plans | Depends on the app |
Plans of other services change; check their sites. More video tools.
Frequently asked questions
What is the best video size for Instagram?
1080 × 1350 (4:5) for feed posts and 1080 × 1920 (9:16) for Reels and Stories.
How do I post a landscape video without cropping it?
Keep “Fit on blurred background”: the whole video is kept and the empty space is filled with a blurred copy.
Will Instagram still compress my video?
Yes, Instagram re-encodes every upload. Starting from the exact size avoids an extra crop or resize on top of that.
Is there a watermark?
No. No watermark and no sign-up.
Is my video uploaded here?
No. It is resized on your device; you upload it to Instagram yourself.
Need to send a big file?
Send files up to 20 GB with a download link or by email. Free, no account needed, original quality.
Send large files free