Resize video for any platform 9:16, 1:1, 4:5 or 16:9
Turn a landscape clip into a vertical one for TikTok, Reels and Shorts, or square it up for an Instagram post. Fill the frame or keep the whole picture with a blurred background.
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Resize video for any platform in your browser
Every platform wants a different shape, and uploading the wrong one means bars, awkward crops or a rejected upload. Pick the frame you need, decide whether to fill it or keep the whole picture, and export at anything from 360p to 4K.
How to resize video online
Open your video
Any clip, in any shape. The current size is shown in the panel.
Pick the frame
9:16 for TikTok, Reels and Shorts. 1:1 for a square post. 4:5 for an Instagram feed post. 16:9 for YouTube.
Choose how it fits
Fill the frame zooms in and crops the edges. Show whole video keeps everything and fills the gaps with a blurred copy of your clip or a solid colour.
Set a resolution and export
Keep the source size or choose 4K, 1080p, 720p, 480p or 360p.
Fill the frame, or keep the whole picture
Filling crops the sides off a landscape clip, which suits footage with the subject dead centre. Showing the whole video keeps every pixel and pads the empty space, either with a soft blurred copy of the clip itself or with a flat colour you choose. The blurred option is what most vertical reposts of landscape footage use, because it fills the screen without stealing attention.
Sizes that platforms expect
A 9:16 vertical video at 1080x1920 covers TikTok, Instagram Reels and YouTube Shorts. 1080x1080 is a square Instagram post, 1080x1350 is the taller 4:5 feed post, and 1920x1080 is standard widescreen YouTube. The exact output size is shown before you export so there is no guessing.
Your video never leaves your device
Most online video editors upload your file to their servers before you can touch it. This one works differently: every edit and every export happens inside your browser, on your own hardware.
Reframing for social usually happens right before posting, often on the phone that filmed the clip. An upload step at that moment is the slowest part of the whole process, and it puts a copy of unpublished footage somewhere you cannot reach.
Doing it locally means the only wait is the export itself. Your device scales the picture, builds the blurred background and saves the result without a byte leaving it.
Resize video — questions and answers
Which platform sizes are covered?
9:16 for TikTok, Reels and Shorts, 16:9 for YouTube and most players, 1:1 for a square feed post, and 4:5 for the taller Instagram portrait post. Each one reframes the clip without you having to work out the pixel dimensions.
Should I fill the frame or fit the whole picture?
Fill crops into the clip so the new shape is completely covered, which suits a subject in the centre. Fit keeps every part of the original and puts a blurred or solid background behind it, which suits footage where the edges matter.
Will resizing make my video blurry?
Going smaller is safe. Going larger is not: a 720p clip exported at 4K has no extra detail to draw on, so it will look soft. Pick a target at or below the resolution you filmed at.
What resolution should I export at?
1080p suits nearly everything and uploads quickly. 720p is fine for a quick share, and 4K is only worth it if the source was filmed in 4K. Resolutions from 360p up to 4K are available.
Does resizing work on a phone?
Yes, which is convenient because this is the tool most often needed on one. Exporting 4K on a phone is slower than on a computer, so choose 1080p if you are in a hurry.
Is my video uploaded to resize it?
No. The reframing and the blurred background are both produced by your own browser, and the file stays on your device.
What size should a TikTok video be?
TikTok, Instagram Reels and YouTube Shorts all use a 9:16 vertical frame, most commonly 1080x1920. Choose the 9:16 frame and Full HD and you will match all three.
Can I add a blurred background to a vertical video?
Yes. Pick your frame, choose Show whole video, then choose Blurred video as the background. Your clip sits in the middle with a soft blurred version of itself filling the space around it.
Does resizing upscale my video?
Choosing a resolution larger than the source will stretch it rather than add detail. For the sharpest result, keep the source resolution or pick a smaller one.
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Resize your video now, free
Pick 9:16, 16:9, 1:1 or 4:5, fill or fit, then export. Nothing is uploaded and nothing is added to the frame.
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