Video Compressor

Choose the Discord Free (20 MB) preset and compress. Discord’s free upload limit is 20 MB, so the preset aims a little under it, at 720p and 30 fps, and works out the bitrate from the video’s length. Nitro Basic raises the limit to 50 MB and Nitro to 500 MB; for those, use Target File Size and set the number yourself. A long video squeezed into 20 MB loses detail, so trimming it to the part you want to share first gives a noticeably sharper result.

Switch to Target File Size, tap the 10 MB chip and compress. The encoder divides the budget by the video’s duration to set the bitrate, so a short clip at 10 MB looks clean and a ten-minute recording at 10 MB will be soft. Three things help a lot: trim anything you do not need, drop the resolution to 720p or 480p, and remove the audio track if the video does not need sound. The chips also offer 16, 25, 50, 100 and 500 MB, and the Custom Target Size slider sets any other size.

Use the Instagram / TikTok (1080p) preset. It encodes at 1080p and 30 fps, which is the resolution both apps display, so the upload is not larger than it needs to be and keeps enough detail to survive the re-compression both platforms apply to everything they receive. If an upload still fails on size, switch to Target File Size and set a lower number.

The compressor loads a sandboxed WebAssembly video encoder that utilizes your local CPU multi-threading and GPU acceleration to transcode video bitrates directly in browser memory.

Because a video is thousands of images plus the work of describing how each one differs from the last. A one-minute clip at 30fps is 1,800 frames, and encoding examines motion across them rather than treating each in isolation — that inter-frame analysis is where the compression comes from and where the time goes. Running in a browser tab adds overhead compared with a native encoder, so expect a wait measured in minutes for anything long. Keeping the tab in the foreground helps; browsers throttle background tabs.

Resolution first if the video will be watched on a phone or embedded small, bitrate first if it must stay full size. The two failure modes look different and that is how you choose: too little bitrate at full resolution produces blocking and smearing during motion, which is very visible; a lower resolution at a healthy bitrate stays clean and simply has less detail. Dropping 4K to 1080p typically cuts the file by roughly three quarters and is invisible on any screen smaller than a television.

Most email providers cap attachments around 25 MB, and messaging apps are usually stricter and re-compress anything you send regardless. Under 20 MB is the safe target for email. The reliable route there is 720p or 1080p at a moderate bitrate rather than an aggressive bitrate at the original resolution — and for anything over a couple of minutes, a link to cloud storage beats fighting an attachment limit at all.