Resize video for Instagram Reels at 1080×1920, with a 4:5 option for the feed. See how the profile grid crops your cover before you post.
Free tier: 3 videos a day without an account, 20 with one, up to 100MB each.
How It Works
Drop an MP4, MOV, WebM or MKV file up to 100MB.
Pick the settings for this tool, or keep the defaults.
Processing takes seconds on a short clip. Download the result — no watermark.
The Resize Video for Instagram Reels is a free online tool from ShortsHero: export at the exact size Reels and the grid preview expect. The video is processed on ShortsHero's servers in seconds for a short clip, with no watermark. Free: 3 videos a day without an account, 20 with one, up to 100 MB each.
Export at the exact size Reels and the grid preview expect.
Why Use This Tool
One processing pass on our servers — no queue behind other people's renders.
The file you download is the file, clean.
Upload from the camera roll and download straight back to it.
H.264 MP4 that plays everywhere, unless you chose another format.
Yes — no account, no watermark. Without an account you can process 3 videos a day up to 100MB each; a free account raises that to 20.
The video is re-encoded once at a high-quality setting (H.264, CRF 23), which is visually lossless at social-media sizes. Nothing is upscaled.
No. Upload, process and download without signing up. With a free account, video results are also saved to a Tools project in your dashboard.
ShortsHero turns long videos into short vertical clips with AI moment detection, face tracking and animated captions — and has free tools for subtitles, transcripts and video formats.
The same transcription powers ShortsHero's clip maker: it finds the strongest moments, reframes them to vertical and adds word-by-word captions in 36 styles.
Try the clip maker freeFree to start · No credit card required
Keep Going
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Write Instagram Reels captions with AI: a strong first line before the 'more' cut-off, a call to action and hashtags. Free, no login.
Find the best time to post Reels on Instagram in your time zone, day by day, plus how to schedule Reels so they go out at those times.
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