Match Instagram's recommended specs
Instagram works best with MP4 (H.264), 1080p resolution and a moderate bitrate. Exporting to these specs avoids aggressive re-compression on upload.
Platform-ready video
Compress Video for Instagram
Instagram re-compresses uploads and rejects files that are too largePrepare videos at the right size and format locally in your browser so they upload fast and look sharp
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Select a video, choose MP4 at 1080p, and compress before uploading.
Drop your file here, or
Compress and convert MP4, MOV, MKV, AVI, and more locally without installing software.
Files stay on your device
MP4 · MOV · WebM · MKV · AVI
No upload required100% free foreverWorks in your browser
Steps
Quick workflow
Use this simple browser workflow to get a smaller file while keeping the original on your device
- Select your video file.
- Choose MP4 output format.
- Set resolution to 1080p (or 1080x1920 for vertical Reels).
- Use a balanced quality preset.
- Compress and upload to Instagram.
What to know before you start
Keep Reels and Stories under control
Large files upload slowly and may fail on mobile connections. Compressing first makes uploads quick and reliable for Reels, Stories and feed posts.
Local browser processing
Your video is processed on your device. Client content and personal clips are never uploaded to a third-party server.
FAQ
Compress Video for Instagram FAQ
Short answers for the most common questions about this workflow and LessMB's local browser compression
No uploadFree toolBrowser-based
What video size does Instagram accept?
Instagram accepts MP4 and MOV up to 4GB, but large files upload slowly and get re-compressed. 1080p MP4 at a moderate bitrate gives the best results.
Does compressing before upload improve quality?
Yes. Uploading a file already close to Instagram's specs means the platform applies less aggressive re-compression, preserving your quality.
Are videos uploaded?
No. LessMB compresses videos locally in your browser session.