Free browser tool
Free Video Resizer
Downscale 1080p to 720p (or custom width) locally with ffmpeg.wasm.
Large sources are scaled during encode. Custom width is capped at 1920 for browser stability.
Drop a video here
MP4 / MOV / WebM — runs on your device
100% client-side via ffmpeg.wasm. Your video never leaves this device.
About this video resizer
Pick a preset (1080p / 720p / 480p) or enter a custom width. Aspect ratio is preserved when height is auto.
Output is H.264 MP4. Pair with Compress if you also need a smaller file size.
For agent-driven workflows, visit okayok.ai.
Why resize here
Common presets
One-click 1080p, 720p, or 480p targets.
Custom width
Enter any width up to 1920; height follows aspect.
Private encode
ffmpeg.wasm never uploads your file.
Works with other tools
Trim first, then resize, then compress.
How to resize
- 1
Upload
Drop a video file.
- 2
Choose size
Preset or custom width.
- 3
Download
Save the resized MP4.
FAQ
More video tools
Video Watermark
Add text or image watermarks with corner/center positions.
Video Speed
Speed up or slow down 0.5x–2x with setpts + atempo.
Video to GIF
Turn a short clip into a GIF with fps/scale limits.
Reverse Video
Reverse playback (video; audio optional, memory-heavy).
Rotate Video
Rotate 90°, 180°, or 270° in the browser.
Video Scene Cuts
Detect shot changes with ffmpeg.wasm and export keyframes or clips.
More from Okay OK
Okay OK is the official home of the OK product family — OK Tools, OK Video, OK Images, and more.
Visit okayok.ai