Resize Video Online

Resize for TikTok

9:16 1080x1920 with TikTok safe zone callouts.

Resize for Instagram Reels

9:16 1080x1920, Reels UI overlay safe zones.

Resize for YouTube Shorts

9:16 1080x1920 with the 3 minute Shorts cap.

Resize for Instagram Post

Square 1:1 1080x1080 for the feed grid.

Resize for LinkedIn

16:9 1920x1080 professional landscape master.

Resize for Facebook

16:9 1920x1080 feed and Watch master.

Resize for Twitter

16:9 1920x1080, the top playback resolution on X.

Resize for Pinterest

2:3 1000x1500 portrait, native to the pin grid.

Crop Video Online

Drag-to-select crop box, any aspect ratio.

Presets

Quickly format your video for popular social media platforms. Automatically adds letterboxing/pillarboxing to maintain aspect ratio.

Resize

Scale your video to exact dimensions. Enable "maintain aspect ratio" to avoid stretching.

Letterbox

Fit video within a frame while preserving aspect ratio. Adds black bars (or custom color) to fill remaining space.

Crop

Keep one region of the video. Drag a box over the preview and the export contains just that region, at its source pixel size.

YouTube

1920 x 1080 (16:9)

The standard landscape format for YouTube videos. Also supports 2560x1440 and 3840x2160 for higher resolutions.

YouTube Shorts

1080 x 1920 (9:16)

Vertical video format for YouTube's short-form content. Keep your video at 3 minutes or less to count as a Short.

TikTok

1080 x 1920 (9:16)

Full-screen vertical format. TikTok recommends 9:16 for the best viewing experience on mobile devices.

Instagram Feed

1080 x 1080 (1:1) or 1080 x 1350 (4:5)

Square works well for carousel posts. Portrait (4:5) takes up more screen space in the feed, increasing engagement.

Instagram Stories / Reels

1080 x 1920 (9:16)

Full-screen vertical video. Leave safe zones at the top and bottom for UI overlays and captions.

Twitter / X

1920 x 1080 (16:9)

Landscape video is the default. Twitter also supports 1:1 and 9:16, but 16:9 gets the most real estate in the timeline.

LinkedIn

1920 x 1080 (16:9)

Professional landscape format. LinkedIn supports videos up to 10 minutes for native uploads.

Resize

Scales the entire video frame to new dimensions. If the target aspect ratio differs from the original and "Maintain aspect ratio" is enabled, the video is scaled to fit within the target size. If disabled, the video is stretched to fill the exact dimensions, which may distort the image.

Letterbox

Places your video inside a target frame while preserving the original aspect ratio. Padding bars (black by default, or any color you choose) fill the remaining space. This is the safest option when you need to match exact platform dimensions without losing any part of the video.

Crop

Keeps only the region inside a box you drag over the preview. Nothing is scaled, so the pixels you keep stay at source quality, and the output is the size of the box, not a platform frame. To land on exact platform dimensions, crop first and then letterbox.

Will resizing reduce my video quality?

Resizing to a smaller resolution naturally reduces detail, but VidStudio re-encodes with high-quality settings to minimize visible artifacts. Scaling up beyond the original resolution may produce a softer image because new pixels must be interpolated. For the best results, always start with the highest-quality source you have and resize downward.

What's the difference between resizing and cropping?

Resizing scales the entire frame to new dimensions, while cropping removes pixels from the edges to match the target size. Resizing keeps the full image but changes its scale; cropping keeps the original scale but shows a smaller portion of the image.

How do I resize a video for Instagram?

Use the Presets tab and select Instagram Square (1080x1080) for feed posts, or the TikTok/Reels preset (1080x1920) for Stories and Reels. There is no 4:5 preset, so for 1080x1350 switch to Letterbox mode and type the dimensions in by hand.

What video formats are supported?

VidStudio accepts MP4 and MOV as input, up to 2 GB per file. Every output is an MP4 with H.264 encoding, which works on virtually every platform and device.

Can I change the aspect ratio without stretching?

Yes. Use the Letterbox mode to add padding bars and preserve the original aspect ratio, or use Crop mode to drag out the region you want and drop the rest. Neither approach stretches your footage.

Do I need to create an account?

No. VidStudio is completely free and requires no account or registration. Your videos are processed in your browser, so there is nothing to sign up for.

How do I resize a video without losing quality?

Upload your video to VidStudio, choose your target dimensions or a social media preset, and click Process Video. VidStudio uses high-quality H.264 encoding to minimize quality loss during resizing. For best results, always resize down from a high-resolution source rather than scaling up.

How do I resize an MP4 video?

Drop the MP4 onto the uploader, choose a target preset or enter custom width and height, and click Process Video. The output is also an MP4 with H.264 encoding, which plays everywhere. MOV files from an iPhone or camera go through the same steps.

How long does it take to resize a video?

A typical 1-minute 1080p clip takes 20 to 60 seconds depending on your device. The encode is a single WebCodecs pass, and browsers that expose a hardware encoder finish faster. Longer or higher-resolution videos take proportionally longer. Everything runs on your device, so internet speed does not factor in.

Can I resize a video from my phone?

Yes. VidStudio runs in any modern mobile browser including Safari on iOS and Chrome on Android. Tap the upload area, pick a video from your camera roll, and the rest of the workflow is the same as on desktop. Phone CPUs are slower than laptops, so expect longer processing times for very high-resolution files.

Why does my video look cropped or stretched after resizing?

If the target dimensions have a different aspect ratio than the source, scaling without protection will stretch the image. Use Letterbox mode to fit the full frame with padding bars, or Crop mode to drag a box around the part you want to keep. Avoid plain Resize with the aspect ratio box unchecked unless you want the stretched look on purpose.

Is there a file size limit for resizing?

Files up to 2 GB are accepted. Because the encode runs locally, how comfortable that is depends on your device: laptops handle multi-gigabyte files fine, while phones can struggle with long 4K clips because of memory pressure inside the browser tab.

Resize horizontal video to vertical

Convert a 16:9 landscape recording to 9:16 for TikTok, Reels, or Shorts. Letterbox keeps the entire frame visible with padding bars, which is the safest choice when text or graphics live near the edges of the source. Crop lets you drag a tall box around the subject instead; export that, then run it through Letterbox to reach exactly 1080x1920.

Resize a 4K video to 1080p

Pick Resize mode with target 1920x1080 and the aspect ratio toggle on. The output stays pixel-perfect 16:9 with no padding or cropping. This is the most common downscale because most upload destinations cap practical playback at 1080p anyway, and the resulting file is much smaller.

Square crop for Instagram feed

Use the Instagram Square preset to letterbox into 1080x1080, or switch to Crop and drag a square box over the part of the horizontal source you want. The crop export keeps the box at source size, so pass it through the preset afterward if you need exactly 1080 pixels. Either way you decide the framing rather than Instagram.

Custom dimensions for a website embed

Switch to Resize mode and type the exact width and height your site layout needs. Keep the aspect ratio toggle on to avoid stretching. Pair this with compression on /compress to keep the embed small.

More Video Tools

Compress Video. Reduce file size without losing quality.
Trim & Cut Video. Remove unwanted sections from your clips.
Generate Thumbnails. Extract still frames for previews and cover images.

From the Blog

How to Resize Video for Social Media. Platform-by-platform guide with recommended settings.
Understanding Aspect Ratios. Learn why 16:9, 9:16, 4:5, and 1:1 matter.
Letterboxing vs. Cropping. When to pad and when to cut.