Resize Video
Scale videos with the Lanczos filter to a preset or custom size. Upscaling cannot add detail that is not in the source.
Select a file for Resize Video
Drag & drop your files here, or click to browse
Presets set the height; width follows the aspect ratio.
- Scaled with the Lanczos filter and encoded as H.264/AAC MP4. Upscaling cannot add detail that is not in the source.
How to use Resize Video
From upload to download in 3 steps.
- 1
Add your file
Choose or drag a MP4, MOV, WEBM, AVI and MKV file into the upload area (up to 1 GB each).
- 2
Adjust the settings
Optionally change the size and video quality — the defaults work well for most files.
- 3
Process and download
Click Process, follow the progress, and download the result. Files are deleted from the server automatically afterwards.
Supported formats and settings
- Input formats
- MP4MOVWEBMAVIMKV
- Output formats
- MP4
- Limits
- Up to 1 GB per file
- One file per job
- Files are deleted automatically after processing
- Size
- 2160p (4K), 1440p, 1080p, 720p, 480p, 360p and 1 more
- Width
- 16–7680 px
- Height
- 16–4320 px
- Fit
- Keep aspect, add black bars, Keep aspect, crop to fill and Stretch to exact size
- Video Quality
- High (larger file), Balanced (recommended) and Small file
Why use our Resize Video?
Genuine Processing
Real conversions by proven engines — never renamed copies or fake results.
Private by Design
Files are deleted automatically after processing and never used for training.
Free to Use
No account, no subscription and no watermarks on your files.
Frequently Asked Questions
Which file formats does Resize Video support?
Resize Video accepts MP4, MOV, WEBM, AVI and MKV files. It produces MP4.
Is there a file size limit?
Each file can be up to 1 GB. Larger files take longer to upload and process.
What happens to my files?
Files are uploaded only when you start processing. They are stored under random names in a private temporary folder, processed, and deleted automatically shortly afterwards — the exact time is shown with your result — or immediately when you click “Delete files now”. Files are never shared or used for training.
How does Resize Video work, and what are its limitations?
Scaled with the Lanczos filter and encoded as H.264/AAC MP4. Upscaling cannot add detail that is not in the source.
Is Resize Video free to use?
Yes. Resize Video is free, needs no account, and does not add watermarks to your files.
Related Tools
Tools that work with the same formats as Resize Video
Crop Video
Crop video borders to 16:9, 9:16, 1:1, or custom aspect ratio frames.
Trim Video
Cut start and end times or extract video highlights with frame accuracy.
Change Video Speed
Speed up video clips for time-lapses or slow them down for cinematic slow-motion.
Merge Videos
Combine multiple video clips into a single continuous video file.