Video Resizer
Instantly adapt your video for every social-media format - straight from your browser.
or drag and drop your file
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How to resize a video online
Perfect dimensions in three quick steps
1. Upload your video
Drag an MP4, MOV, WebM or GIF into the box, or click “Upload”. Files up to 2 GB are transferred over encrypted HTTPS.
2. Pick size or enter pixels
Select a preset ratio like 9:16 (Reels), 1:1 (Instagram), 16:9 (YouTube) or type custom width × height. Choose Fit (letterbox), Fill (crop) or Stretch.
3. Export & download
Hit “Export” to render a watermark-free MP4 in the new dimensions, or keep the source resolution for maximum quality.
One-click social presets
Instant aspect-ratios for TikTok, Instagram Feed & Stories, YouTube, Facebook and Twitter - no guesswork or manual math.
Pixel-perfect control
Need a 1080×1350 Pinterest Pin or a 2560×1440 YouTube banner? Enter any custom dimension and preview in real time.
Explore more free tools
Crop, trim, subtitle or convert your videos - everything you need in one cloud workspace.
Video Resizer
Resize any video for TikTok, Instagram or YouTube online: crop or fit perfectly with zero quality loss.
Add Emoji
Add vibrant emoji stickers to videos in-browser: choose size, position and timing to match every scene.
Trim Video
Cut beginning, middle or end of any clip online: trim precisely, remove unwanted parts, keep best moments.
Reverse Video
Play footage backward for social posts: upload, reverse instantly in one click, then download the edited file.
MP4 to MP3
Extract high-quality MP3 audio from MP4 movies online: fast conversion, no installs, zero loss in bitrate.
Add Stickers
Insert fun, colorful stickers on video frames: drag, resize, schedule appearance and boost viewer engagement.
YouTube Downloader
Download YouTube videos to your device in chosen format and resolution: quick, secure, no quality degradation.
Add GIF
Overlay animated GIFs on top of any video track: control size, placement and timing for dynamic visual effects.
Crop Video
Crop footage directly online to focus on key content: set custom frame, remove distractions, export instantly.
YouTube to MP3
Convert YouTube links to MP3 audio in seconds: keep music, podcasts or lectures offline with perfect fidelity.
TikTok Downloader
Save TikTok videos in HD without watermark: paste the link, download instantly for offline viewing or edits.
Twitter Downloader
Grab videos from Twitter posts in multiple qualities: paste URL, download fast and watch offline anytime.
YouTube to MP4
Get YouTube videos as MP4 files with selectable quality: copy URL, convert online, store for editing or sharing.
Instagram Downloader
Download Instagram videos, Reels, stories and IGTV in high definition: no login, no watermarks, free forever.
AVI to MP4
Convert legacy AVI files to modern MP4 format online: reduced size, broader compatibility, instant download.
MP4 to FLAC
Extract lossless FLAC audio from MP4 clips: preserve full quality for music archiving or professional editing.
WebM to MP4
Transform WebM videos to universal MP4 for smooth playback on any device: drag, convert and save quickly.
MP4 to WMA
Turn MP4 video into compact WMA audio files within your browser: efficient size, ideal for Windows players.
MP4 to DivX
Re-encode MP4 movies to high-compression DivX format: smaller files, good quality, ready for legacy devices.
MP4 to MOV
Change MP4 videos to Apple-friendly MOV format online: perfect for QuickTime or Final Cut workflows.
MP4 to M4A
Strip audio from MP4 and save as clean M4A tracks: great for iOS playlists and streaming with small file size.
MP4 to AVI
Convert MP4 clips to widely supported AVI containers: maintain quality while ensuring legacy device playback.
MP4 to WebM
Export MP4 content as lightweight WebM for web delivery: faster streaming and reduced bandwidth consumption.
MP4 to WMV
Switch MP4 videos to WMV format for smooth playback on Windows PCs and classic media players.
MP4 to MPEG
Repackage MP4 footage as standard MPEG files: optimize for broadcasting, DVDs or older hardware.
MP4 to MPG
Convert MP4 files to MPG quickly online: ensure compatibility with vintage devices and authoring software.
MP4 to WAV
Extract uncompressed WAV audio from MP4 video: ideal for editing, podcasts or high-quality sound archiving.
MP4 to FLV
Turn MP4 videos into lightweight FLV for legacy web players: faster loading without sacrificing clarity.
MP4 to M4V
Convert MP4 to DRM-ready M4V for effortless sync with iTunes, Apple TV and other iOS environments.
MP4 to MKV
Wrap MP4 streams in flexible MKV containers: add subtitles, multiple tracks and achieve better compression.
MP4 to GIF
Create looping GIF animations from MP4 snippets: select range, convert online, share on social platforms.
MP4 to WebP
Generate animated WebP images from MP4 clips: enjoy tiny file sizes and rapid page loading speeds.
MP3 to MP4
Combine MP3 audio with still imagery to form MP4 video: ideal for YouTube or social music sharing.
WAV to MP4
Encode WAV audio into MP4 video with a static cover: reduce size and improve compatibility for uploads.
GIF to MP4
Upgrade looping GIFs to smooth MP4 video: smaller files, better quality, compatible with all devices.
Frequently Asked Questions
Which video formats and sizes do you accept?
You can upload MP4, MOV, WebM, MKV and GIF files up to 2 GB. 4 K and 60-fps footage are fully supported.
What is the difference between Fit, Fill and Stretch?
Fit adds black or blurred bars to keep everything visible, Fill crops the edges to fill the frame, and Stretch changes pixel proportions (not recommended for people or logos).
Will resizing lower my video quality?
No. We re-encode using high-bit-rate H.264 or HEVC. Choose “Same as source” during export for visually lossless output.
Does resizing also compress the file size?
If you scale down the resolution or pick a lower bitrate, the final file is usually smaller. Keeping the original resolution maintains size.
Can I combine resizing with cropping or trimming?
Absolutely. After uploading, you can crop the frame, trim unwanted parts, add text or stickers, then export - all without re-uploading.
How do I avoid black bars when posting to TikTok?
Select the 9:16 preset and choose the Fill option to crop excess width, ensuring your video fills the entire phone screen.
Is there a watermark on the exported video?
Never. Your download is a clean file - no branding, credits or outro screens.
Can I resize a video on my phone?
Yes. The editor is touch-optimised and works in Safari, Chrome and Firefox on both iOS and Android - no app install required.
How is my privacy protected?
Files travel via HTTPS, are processed in volatile memory and are automatically deleted from our servers within 30 minutes of export.