Reduce video file size by adjusting quality and resolution - perfect for WhatsApp, Instagram, or email attachments. All processing runs 100% locally inside your browser.
Upload a video file and choose your quality level. Lower quality means a smaller file. The tool re-encodes your video at the selected settings entirely inside your browser.
Video files are often hundreds of megabytes because modern smartphones record at high bitrates (e.g. 50-100 Mbps in 4K or 1080p60). Compressing a video for chat apps or email involves reducing three key parameters: resolution, framerate, and video bitrate.
| Platform / Application | File Size Limit | Recommended Resolution | Max Duration |
|---|---|---|---|
| WhatsApp Status | Max 16 MB | 720p HD (720 × 1280) | 30 seconds |
| Discord (Free Tier) | Max 25 MB (formerly 8 MB) | 720p or 1080p | No hard limit |
| Email Attachment (Gmail / Outlook) | Max 25 MB / 20 MB | 480p or 720p | 1-3 minutes |
| Instagram Story / Reel | Max 4 GB (Recommended < 50 MB) | 1080 × 1920 (9:16) | 60s - 90s |
| Slack (Free Workspaces) | Max 1 GB (Storage limits apply) | 720p HD | No limit |
Unlike cloud converters that require uploading your private family or workplace videos across the internet, FileSwift executes video re-encoding locally in your browser memory using WebAssembly. Your original audio and video streams are decoded frame-by-frame and compressed using hardware-accelerated canvas pipelines.
It depends on the source material, but typical reductions are 40-70% at the Balanced setting. High-bitrate 4K phone videos often reduce by over 80% when scaled to 720p.
Video encoding requires substantial CPU power. Desktop computers use multi-threaded WebAssembly threads with hardware acceleration, while mobile browsers run single-threaded sandboxes. For best speed on mobile, select 480p or 720p resolution.
Desktop browsers can comfortably handle video files up to about 2 GB in memory. Mobile browsers are capped at roughly 400 MB due to mobile RAM limits.
No. FileSwift never adds watermarks, stamps, or promotional overlays to your videos.
Yes. If you only need a portion of the clip (such as a 30-second highlight), use our free Trim Video tool first to discard unwanted footage before compressing.