Resize Video
Resize Video is a free online tool that lets you change a video's resolution (width and height). It runs entirely in your browser — no sign-up, no watermark, and your files are never uploaded.
Free · unlimited · processed privately in your browser
or drag and drop a file here
Supported: MP4, MOV, MKV, WEBM, AVI, FLV, WMV, MPEG, MPG, 3GP, OGV, M4V, TS
Your files stay private — 100% in your browser
We never upload your files, photos, or videos to any server. Everything is processed directly in your browser, so your data never leaves your device. That means zero privacy worries — no one else can ever see or store what you convert.
- No uploads
- Processed on your device
- No sign-up needed
About Resize Video
Resize Video is a free online tool that lets you change a video's resolution (width and height). There is no sign-up, no watermark, and no limit on how many times you can use it. The whole process happens on your own device using your browser, so your media is never uploaded and nobody else can access it.
After you upload
The width and height are pre-filled with your video's real size, so you can see what you're changing.
Options explained
- Width / Height (px)
- Type the dimensions you want. Set one side to 0 to keep the aspect ratio automatically, so the video isn't stretched. Output is MP4 (H.264).
How to use Resize Video
- 1Click Choose Files and upload your file.
- 2Adjust any available options for your needs.
- 3Press Run to process the file in your browser.
- 4Download your result instantly.
Frequently asked questions
Is Resize Video free?
Yes — Resize Video is free to use as often as you like, with no account, no caps, and no watermark on the output.
Do I need to install anything?
Nothing to install. Resize Video works inside your web browser on desktop and mobile — no app, codecs, or plugins needed.
Are my files uploaded to a server?
No. Your media files are processed on your own device and never sent to a server, so they stay private.
How to resize a video?
Use Resize Video above: upload your file, run it, and download the result. It is free with no limits or sign-up, and the whole process happens on your own device using your browser, so your media is never uploaded and nobody else can access it.
How to change video resolution?
Use Resize Video above: upload your file, run it, and download the result. It is free with no limits or sign-up, and the whole process happens on your own device using your browser, so your media is never uploaded and nobody else can access it.
How to resize a video for instagram?
Use Resize Video above: upload your file, run it, and download the result. It is free with no limits or sign-up, and the whole process happens on your own device using your browser, so your media is never uploaded and nobody else can access it.