Free Online Video Resizer
Resize MP4, WebM, MOV and other video files to any resolution or aspect ratio. Everything runs in your browser using WebAssembly — no upload to any server, no watermark, no file-size limit. Perfect for social media, presentations or email attachments.
Features
Resize Videos for Any Platform
Set exact pixel dimensions or pick a preset aspect ratio — your video fits wherever you need it.
Custom Resolution
Type any width and height in pixels. Lock or unlock the aspect ratio to stretch or preserve proportions.
Preset Aspect Ratios
One-click presets for 16:9 (YouTube), 9:16 (Reels/Shorts), 1:1 (Instagram), 4:5 (Facebook), and 4:3 (presentations).
Batch Resize
Drop multiple clips and resize them all to the same dimensions in one session — no need to repeat settings.
Privacy-First, Browser-Only Processing
Your footage never leaves your device. All encoding happens locally via WebAssembly.
No Server Upload
Files are read, resized, and written back entirely on your own machine — zero network transfer.
No Watermark or Branding
The exported video is clean — no logo, no stamp, no overlay of any kind.
Works Offline After Load
Once the page loads, you can disconnect from the internet and still resize videos.
Loved by creators, students & researchers
Why people use BibiGPT to turn videos into text every day.
Trusted by 50,000+ users worldwide
“I paste a link and get clean captions in seconds — it saves me hours of retyping every single week.”
Maya R.
Content Creator · Repurposes short videos
“Exporting the transcript lets me review new words at my own pace instead of pausing the video constantly.”
Daniel K.
Language Learner · Studies with real videos
“Accurate, timestamped text I can quote directly. It has quietly become part of my daily workflow.”
Priya S.
Researcher · Cites public talks
FAQ'S
Frequently Asked Questions
Ask us anything!
Need AI video summaries too? Try BibiGPT
Besides resizing, BibiGPT uses AI to summarize any YouTube, Bilibili or TikTok video in seconds. Paste a link, get structured notes — free to start.