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

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

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

3. Export & download

Hit “Export” to render a watermark-free MP4 in the new dimensions, or keep the source resolution for maximum quality.

Resize video online
Resize for Social Media

One-click social presets

Get instant aspect-ratios optimized for TikTok, Instagram Feed & Stories, YouTube, Facebook, and Twitter. No guesswork, no manual calculations - just select your platform and resize with one click.

Set your own size

Pixel-perfect control

Need a 1080×1350 Pinterest Pin or a 2560×1440 YouTube banner? Enter any custom dimension and preview the results in real time. Full control over width, height, and aspect ratio for any project.

Explore more free tools

Enhance your resized videos with our complete editing suite. Crop, trim, add subtitles, or convert formats - everything you need in one browser-based workspace.
Video Resizer

Video Resizer

Resize any video for TikTok, Instagram or YouTube online: crop or fit perfectly with zero quality loss.
Add Emoji

Add Emoji

Add vibrant emoji stickers to videos in-browser: choose size, position and timing to match every scene.
Trim Video

Trim Video

Cut beginning, middle or end of any clip online: trim precisely, remove unwanted parts, keep best moments.
Reverse Video

Reverse Video

Play footage backward for social posts: upload, reverse instantly in one click, then download the edited file.
MP4 to MP3

MP4 to MP3

Extract high-quality MP3 audio from MP4 movies online: fast conversion, no installs, zero loss in bitrate.
Add Stickers

Add Stickers

Insert fun, colorful stickers on video frames: drag, resize, schedule appearance and boost viewer engagement.
YouTube Downloader

YouTube Downloader

Download YouTube videos to your device in chosen format and resolution: quick, secure, no quality degradation.
Add GIF

Add GIF

Overlay animated GIFs on top of any video track: control size, placement and timing for dynamic visual effects.
Crop Video

Crop Video

Crop footage directly online to focus on key content: set custom frame, remove distractions, export instantly.
YouTube to MP3

YouTube to MP3

Convert YouTube links to MP3 audio in seconds: keep music, podcasts or lectures offline with perfect fidelity.
TikTok Downloader

TikTok Downloader

Save TikTok videos in HD without watermark: paste the link, download instantly for offline viewing or edits.
Twitter Downloader

Twitter Downloader

Grab videos from Twitter posts in multiple qualities: paste URL, download fast and watch offline anytime.
YouTube to MP4

YouTube to MP4

Get YouTube videos as MP4 files with selectable quality: copy URL, convert online, store for editing or sharing.
Instagram Downloader

Instagram Downloader

Download Instagram videos, Reels, stories and IGTV in high definition: no login, no watermarks, free forever.
AVI to MP4

AVI to MP4

Convert legacy AVI files to modern MP4 format online: reduced size, broader compatibility, instant download.
MP4 to FLAC

MP4 to FLAC

Extract lossless FLAC audio from MP4 clips: preserve full quality for music archiving or professional editing.
WebM to MP4

WebM to MP4

Transform WebM videos to universal MP4 for smooth playback on any device: drag, convert and save quickly.
MP4 to WMA

MP4 to WMA

Turn MP4 video into compact WMA audio files within your browser: efficient size, ideal for Windows players.
MP4 to DivX

MP4 to DivX

Re-encode MP4 movies to high-compression DivX format: smaller files, good quality, ready for legacy devices.
MP4 to MOV

MP4 to MOV

Change MP4 videos to Apple-friendly MOV format online: perfect for QuickTime or Final Cut workflows.
MP4 to M4A

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

MP4 to AVI

Convert MP4 clips to widely supported AVI containers: maintain quality while ensuring legacy device playback.
MP4 to WebM

MP4 to WebM

Export MP4 content as lightweight WebM for web delivery: faster streaming and reduced bandwidth consumption.
MP4 to WMV

MP4 to WMV

Switch MP4 videos to WMV format for smooth playback on Windows PCs and classic media players.
MP4 to MPEG

MP4 to MPEG

Repackage MP4 footage as standard MPEG files: optimize for broadcasting, DVDs or older hardware.
MP4 to MPG

MP4 to MPG

Convert MP4 files to MPG quickly online: ensure compatibility with vintage devices and authoring software.
MP4 to WAV

MP4 to WAV

Extract uncompressed WAV audio from MP4 video: ideal for editing, podcasts or high-quality sound archiving.
MP4 to FLV

MP4 to FLV

Turn MP4 videos into lightweight FLV for legacy web players: faster loading without sacrificing clarity.
MP4 to M4V

MP4 to M4V

Convert MP4 to DRM-ready M4V for effortless sync with iTunes, Apple TV and other iOS environments.
MP4 to MKV

MP4 to MKV

Wrap MP4 streams in flexible MKV containers: add subtitles, multiple tracks and achieve better compression.
MP4 to GIF

MP4 to GIF

Create looping GIF animations from MP4 snippets: select range, convert online, share on social platforms.
MP4 to WebP

MP4 to WebP

Generate animated WebP images from MP4 clips: enjoy tiny file sizes and rapid page loading speeds.
MP3 to MP4

MP3 to MP4

Combine MP3 audio with still imagery to form MP4 video: ideal for YouTube or social music sharing.
WAV to MP4

WAV to MP4

Encode WAV audio into MP4 video with a static cover: reduce size and improve compatibility for uploads.
GIF to MP4

GIF to MP4

Upgrade looping GIFs to smooth MP4 video: smaller files, better quality, compatible with all devices.
See all features

Frequently Asked Questions

Which video formats and sizes do you accept?

You can upload and resize MP4, MOV, WebM, MKV, and GIF files up to 2 GB in size. Our video resizer fully supports high-resolution content including 4K videos and 60-fps footage, ensuring smooth processing regardless of your source format.

What is the difference between Fit, Fill and Stretch?

Fit adds black or blurred bars (letterboxing) to keep all content visible without cropping. Fill crops the edges to fill the entire frame, removing parts of the video. Stretch changes pixel proportions to fit the new dimensions, which can distort the image and is not recommended for videos with people or logos.

Will resizing lower my video quality?

No, resizing will not lower your video quality. We use high-bitrate H.264 or HEVC encoding profiles during the export process. For the best results, select "Same as source" during export to maintain visually lossless output that matches your original video quality.

Does resizing also compress the file size?

File size depends on your export settings. If you scale down the resolution or choose a lower bitrate, the final file will typically be smaller. However, keeping the original resolution and bitrate will maintain the file size. Resizing to a smaller resolution often reduces file size while maintaining good quality.

Can I combine resizing with cropping or trimming?

Absolutely. Our video editor allows you to combine multiple editing features. After uploading your video, you can crop the frame, trim unwanted parts, add text or stickers, resize to your desired dimensions, and then export - all in one session without needing to re-upload your file.

How do I avoid black bars when posting to TikTok?

To avoid black bars on TikTok, select the 9:16 aspect ratio preset (perfect for vertical videos) and choose the Fill option. This will crop any excess width from your video, ensuring it fills the entire phone screen without black bars on the sides.

Is there a watermark on the exported video?

Never. Your downloaded resized video is completely clean with no watermarks, branding, credits, or outro screens. The file contains only your edited content, ready to share on any platform or use in your projects.

Can I resize a video on my phone?

Yes, absolutely. Our video resizer is fully optimized for mobile devices. The editor features a touch-friendly interface that works smoothly in Safari, Chrome, and Firefox on both iOS and Android devices. No app installation is required - simply open the page in your mobile browser and start resizing.

How is my privacy protected?

Your privacy and security are our top priorities. All file transfers are encrypted via HTTPS. Videos are processed in volatile memory and automatically deleted from our servers within 30 minutes of export. We never store your content or collect personal information, ensuring your videos remain completely private.