Comprimir vídeo grátis online
Reduza o tamanho do vídeo
Popular Uses
Compress Video for WhatsApp — Under 16MB
Compress videos for WhatsApp sharing. Stay under the 16MB limit. Free, browser-based.
Compress Video Under 25MB — For Email & Discord
Reduce video size to under 25MB for email attachments and Discord. Free online compressor.
Compress Video for Email Attachment
Reduce video file size for email. Stay under 25MB limit. Free, no upload to servers.
Compress Video for Instagram — Under 100MB
Compress videos for Instagram posts, Reels, and Stories. Stay under 100MB limit. Free, browser-based.
Compress Video for TikTok — Under 287MB
Compress videos for TikTok upload. Stay under the 287MB limit. Free, no signup, browser-based.
Compress Video for Telegram — Under 2GB
Compress videos for Telegram sharing. Reduce file size for faster uploads. Free, no signup, browser-based.
Why it matters
Video file sizes seem almost arbitrarily large until you understand what's inside them. A 1-minute 4K video can range from 100MB (compressed H.265 with low bitrate) to 4GB (uncompressed RAW footage). The same content — same resolution, same duration — can differ by 40× in file size based purely on codec and bitrate choices.
The codec is the algorithm used to compress video frames. H.264 (AVC) is the most widely supported codec — every device can play it. H.265 (HEVC) achieves the same quality at roughly half the file size, but requires more processing power to decode and has patent licensing complications. VP9 and AV1 are royalty-free alternatives used by YouTube and streaming services.
Bitrate determines how much data is used per second of video. A 1080p video at 8 Mbps (megabits per second) looks excellent; the same video at 2 Mbps looks noticeably degraded. The tradeoff: a 10-minute video at 8 Mbps is 600MB; at 2 Mbps it's 150MB.
Platform auto-compression is a hidden gotcha. When you upload a video to Instagram, YouTube, or TikTok, the platform re-encodes it through their own pipeline. If you upload a 100MB video, the platform will compress it down to 5–15MB — but their algorithm optimizes for their infrastructure, not your quality preferences. Uploading a pre-compressed video at the platform's target bitrate and resolution means less quality loss through their re-compression step.
For sharing videos privately via WhatsApp, email, or cloud storage, compression is straightforward: reduce until it fits the limit. For publishing to social platforms, match the platform's recommended specifications as closely as possible to minimize double-compression quality loss.
Common Tasks & Requirements
| Platform / Use Case | Requirement | Tip |
|---|---|---|
| YouTube | No limit on upload; recommends 8–12 Mbps for 1080p | Upload at 1080p H.264 at 8 Mbps for optimal quality/size balance; YouTube re-encodes anyway but starts from your uploaded quality |
| Instagram Reels | Max 1GB, max 90 seconds | Target 1080×1920 (9:16), H.264, under 50MB for smooth upload; Instagram re-compresses to ~8 Mbps |
| TikTok | Max 287.6MB for iOS, 500MB for Android | Target 1080×1920, H.264, under 100MB; keep bitrate around 6–8 Mbps to match TikTok's output quality |
| 16MB limit for videos | A 1-minute 720p video at Low quality is typically 8–12MB; use Medium for better quality on shorter clips | |
| Email / Google Drive sharing | Gmail 25MB, Drive no limit | For email, compress to under 20MB; for Drive sharing, compression is less critical but helps with mobile viewing speed |
| Discord (free tier) | 25MB upload limit | Compress 1-minute clips to Medium quality; use Low quality for clips over 2 minutes |
Format Comparison
| Format | File Size | Quality | Best For |
|---|---|---|---|
| MP4 (H.264) | Baseline | Excellent — industry standard | Universal compatibility; works on every device and platform |
| MP4 (H.265/HEVC) | 40–50% smaller than H.264 | Excellent — same visual quality as H.264 at half the size | Storage-sensitive applications; requires modern devices to decode smoothly |
| WebM (VP9) | 30–40% smaller than H.264 | Very good — comparable to H.265 | Web embedding; royalty-free; excellent Chrome/Firefox support |
| MOV | Similar to MP4 | Excellent | Apple ecosystem; Final Cut Pro export; loses compatibility outside macOS/iOS |
| MKV | Similar to MP4 | Excellent — container only, quality depends on codec inside | High-quality archival; supports multiple audio tracks and subtitles |
| AVI | 2–3× larger than MP4 | Good — older codec (DivX/Xvid) | Legacy compatibility only; avoid for new content |
Frequently Asked Questions
Will compressing a video reduce its quality permanently?
What's the best way to compress a video without losing quality?
How long does video compression take?
Why is my compressed video smaller but looks worse?
What resolution should I compress to for mobile viewing?
Can I compress a video and keep the original audio quality?
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