Resize Video Resolution

Change aspect ratio to 16:9, 9:16 or scale to HD, Full HD, and 4K instantly.

Select Video File

Drag & Drop supported (MP4, WebM, MOV)

Max 50MB Recommended

Original Video 0x0 px

CUSTOM RESOLUTION (PX)

WIDTH

HEIGHT

* Changing these will override the preset selection below.

Smart Presets

SOCIAL MEDIA (ASPECT RATIO)

9:16 Reels/Shorts

1:1 Square Post

16:9 Widescreen

STANDARD RESOLUTIONS

4K UHD 3840x2160

1080p FHD 1920x1080

720p HD 1280x720

480p SD 854x480

Smart Padding Enabled: Black bars will be added automatically to prevent video stretching.

WebAssembly Encoding Engine.

Resize Video Resolution & Aspect Ratio Free

Do you need to convert a horizontal YouTube video (16:9) to a vertical TikTok or Instagram Reel format (9:16)? Or do you want to downscale a massive 4K video to 1080p to save space? HB Tools Video Resizer by Haridash lets you change video dimensions instantly online without losing quality.

The "Smart Padding" Magic

Most free online video resizers have a huge problem: when you change a video from a square to a rectangle, they stretch the video, making people look weirdly wide or tall.

Our tool solves this using a professional Smart Padding Algorithm. If you convert a widescreen video to a vertical format, our tool automatically calculates the aspect ratio and adds clean, cinematic black bars (Letterboxing/Pillarboxing) to the top and bottom. Your video will fit perfectly into the new frame without any ugly stretching or cropping!

100% Private (No Server Uploads)

Video processing is heavy. Uploading a video to a website to resize it takes a lot of time. HB Tools uses FFmpeg WebAssembly, meaning the complex mathematics of video scaling happen directly inside your device's browser. Your private videos are never uploaded to any cloud server.