Online Video Resizer
Use Online Video Resizer, review the result, and keep the original until the output is checked.
What Is this tool?
Resize videos quickly with our free this tool. Adjust resolution, aspect ratio, and size to fit any screen or platform. Supports MP4, AVI, MOV, 3GP, and more. No downloads or watermarks—fast, secure, and easy to use.
Whether you upload from a laptop, tablet, or phone, the this tool handles MP4, MOV, AVI, MKV, WMV, FLV, WebM, and 3GP without forcing you to install desktop software. Drag and drop a file, adjust settings in the panel, preview the result, and download when you are satisfied.
Also known as a online video editor, free video tool, browser video editor, this page is built for quick edits—no account, no watermark on exports, and no usage cap for normal personal or business work.
Most processing runs locally in your browser when the format allows, which keeps drafts and client assets off third-party servers.
How to Use Online Video Resizer Online
- Open the tool — You are already on the Online Video Resizer page. No sign-up is required.
- Upload your file — Click Select Files or drag MP4, MOV, AVI, MKV, WMV, FLV, WebM, and 3GP into the upload area. Batch upload works on supported tools.
- Adjust settings — Use sliders, presets, and text fields to match your target output for videos scaled to platform-ready dimensions.
- Preview — Check the live preview or progress bar before exporting.
- Download — Save the finished file to your device. Run the this tool again if you need another variant.
Tip: Keep your original file until you confirm the export meets your platform's size or quality rules.
Key Features of this tool
- Free and unlimited — Use the this tool as often as you need for personal or commercial projects.
- Browser-based — Works on Chrome, Firefox, Safari, and Edge on Windows, macOS, Linux, iOS, and Android.
- Format support — Accepts MP4, MOV, AVI, MKV, WMV, FLV, WebM, and 3GP with sensible defaults for quality and output type.
- No watermark — Downloads stay clean unless you choose to add a watermark yourself.
- Privacy-first — Client-side tools process files on your device; server-assisted jobs follow automatic deletion policies.
- Fast workflow — Optimized for one task: produce videos scaled to platform-ready dimensions in minutes, not hours in a full editor suite.
Common Use Cases
Teams reach for the this tool when they need videos scaled to platform-ready dimensions without opening a heavy desktop suite. Typical jobs include social media clips, YouTube intros, webinar recordings, screen captures, and client review cuts.
Because the tool is web-based, remote collaborators can use the same page from any location—helpful for agencies, teachers, and small business owners who edit files on different devices.
Tips for Best Results
Save a copy of the original before exporting. Re-running from the source beats editing an already degraded export.
When a portal rejects your upload, compare its file-size and dimension limits with your output, adjust settings, and run the this tool again.
Bookmark this page for repeat tasks—settings stay visible between uploads, which speeds up batch work.
Freelancers and in-house teams bookmark the Online Video Resizer because it removes the install-and-export cycle from traditional editors.
When a client sends the wrong aspect ratio or file size, rerun the Online Video Resizer with updated presets instead of rebuilding the project in desktop software.
For videos scaled to platform-ready dimensions, compare the preview carefully before downloading so you catch accidental crops, silence gaps, or over-compression early.
The Online Video Resizer pairs well with other EditTools pages—compress after resize, or merge after trim—to finish multi-step jobs without leaving the site.
Online Video Resizer 常见问题
What does Online Video Resizer do?
Adjust the resolution or aspect ratio of a supported video. Review the result and download the processed file.
Which files work with Online Video Resizer?
This category commonly supports MP4, MOV, AVI, MKV, WMV, FLV, WebM, and 3GP. Use the accepted file types shown in the uploader, because support varies by browser and by the engine behind each tool.
Will the aspect ratio be preserved?
Set both dimensions to the same kind of constraint, or lock the ratio. Choosing unrelated width and height values stretches the content, which is the most common cause of a distorted download.
Will my original file be changed?
No. The work is done on a copy in this tab by a WebAssembly build of ffmpeg, and the result arrives as a separate download, so your original is still there if you need it.
How is my file processed?
It is not uploaded. The processing is done locally by a WebAssembly build of ffmpeg, so the practical ceiling is your device's memory and the limit shown beside the uploader - no queue, no account, no copy on a server.
Is the Online Video Resizer free?
Yes. The Online Video Resizer is free with no trial limit, subscription, or watermark on downloads. You can use it for personal and commercial projects without creating an account.