How do I compress a video for TikTok?

Upload the video, choose the file-size target and quality, then download the compressed MP4. The tool processes the file in your browser, so you can reduce its size before uploading it to TikTok.

What does a TikTok video optimizer do?

A TikTok video optimizer reduces the file size while preserving usable visual quality. This compressor also lets you choose an output resolution and MP4 format before you post.

What resolution should I use for TikTok?

Use a vertical 1080 x 1920 video when you want a full-screen 9:16 TikTok. Keep the original resolution when the video is already prepared correctly, or choose a smaller output when file size matters more.

Will TikTok compress my video again?

TikTok processes uploaded videos for playback. Compressing first gives you control over the source file size and quality before that platform processing happens.

Does this TikTok video compressor add a watermark?

No. The downloaded video has no BlitzReels watermark, and the compression runs locally in your browser without requiring an account.

Compress Video for TikTok

Make a smaller video for TikTok. Choose a size target, keep the sound, and check the download before sharing.

Shrink the file without turning your posting workflow into another editing session.

Choose a video

Or drag and drop a file here

Up to 512 MB

How to use it

Upload your video

Select any video file you want to post on TikTok. Works with MP4, MOV, and more.

Choose your TikTok output

Set a smaller file-size target, output resolution, and quality before compression.

Download and post

Your TikTok-ready video uploads faster and maintains quality.

What you get

TikTok video optimizer

Reduce file size while keeping control of resolution and visual quality.

100% Free & No Watermarks

Compress unlimited videos for free. No registration required.

Browser-Based Processing

All compression happens in your browser. Your video stays on your device.

Faster Mobile Uploads

Smaller files upload faster from your phone to TikTok.