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Free Online Bulk Social Media Video Resizer, A Whole Shoot at Once

Size videos for Reels, TikTok, Shorts and feed posts, with the length limit checked before anything is encoded. A whole shoot can go in at once: the preset below covers the row, and any single clip can be sent to a different placement. The blurred backdrop is built in, and nothing is uploaded.

Free Forever Nothing Uploaded Nine Placements Bulk Videos
Free Online Bulk Social Media Video Resizer, A Whole Shoot at Once
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Size a video for where it is going Drag your video here and pick the placement. Reels, TikTok, Shorts, feed posts and the rest, each with its own size and length limit. Nothing is uploaded. Drop in several at once if you have a batch. Select a Video MP4, MOV, WebM, MKV, AVI and more • best under 300 MB • nothing is uploaded
0:00.000 / 0:00
Where it is going
Pick where the video is going and the size, shape and length limit come with it.
What fills the space
Length check

Drop a video and this will say whether it is short enough for the placement you picked.

Output
Dropping frames makes a smaller file. It cannot add frames that were never recorded.
.mp4

Your video

These files only exist in this tab. Save the ones you want before you close the page, because there is no copy of them anywhere else.

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How to Size a Video for Social Media

Drop it, pick the placement, download it ready to post.

1
Drop your video in Whatever shape it was filmed in. Nothing is uploaded anywhere.
2
Pick where it is going Reels, TikTok, Shorts, a story, a feed post, YouTube, X or LinkedIn. The size comes with the choice.
3
Check the length line It compares your clip against that placement's limit and says plainly whether it fits.
4
Choose what fills the space A blurred copy of the video, a crop that fills the frame, or plain black bars.
5
Download and post it It comes out as MP4, which is the format none of these platforms argue with.

Numbers That Come From the Platforms

Including the things this tool cannot do.

These are the sizes the platforms themselves recommend. Vertical placements are 1080 x 1920, the Instagram portrait feed is 1080 x 1350, square posts are 1080 x 1080 and ordinary YouTube is 1920 x 1080. Sending something larger does not help, because every platform re-encodes what it receives down to roughly these numbers anyway.
The length limit is reported, never enforced. If your clip is too long for the placement, the page says so and stops there. Deciding which 60 seconds of your video matter is your job, not a piece of software's, and a tool that silently keeps the first minute has quietly ruined the edit you spent an hour on.
The blurred fill keeps the whole picture. A copy of your video is enlarged to cover the frame and blurred, then the real picture sits over the middle of it. It is what stops a landscape clip in a vertical feed looking like a landscape clip in a vertical feed.
MP4 with h264 is what every platform wants. It is the one combination that is never refused, never re-encoded more than once and never arrives silent. That is why the format list here is short.
Leave room for the interface. Every vertical feed lays captions, buttons and a username over roughly the bottom fifth and the top tenth of the frame. Nothing here draws guides onto your video, but it is worth keeping anything important away from those edges.
Keep the audio even if the video is silent. Some feeds treat a file with no audio track at all as broken and refuse it, which is a confusing error to receive. The soundtrack is carried through by default.
One shoot usually needs more than one size. Add every clip from the session at once and the chosen preset is applied down the row. Where a particular clip belongs on a different platform, click its thumbnail and pick another preset for it alone, and the rest keep the shared one.
The work happens on your own machine. Your video is opened by this page, not sent anywhere. That is why there is no upload bar, no queue and no waiting for a server. It is also why a big file leans on your own processor: nothing is being done for you somewhere else.
The first run downloads the engine, later runs do not. Video work needs a real encoder, and that is a thirty megabyte download the first time you press the button. Your browser keeps it, so the second video starts straight away.
Leave the tab open. All of the work is in this page, so closing it or navigating away stops the job halfway. On a phone, switching apps can do the same thing, because the system is allowed to pause a background tab.

Key Features & Capabilities

What this tool does, and what it deliberately does not.

Nine real placements Not nine aspect ratios with platform names glued on, but the size and the length limit each one actually uses.
It checks the length And tells you before you encode, rather than letting the upload fail after you have waited for it.
It will not trim for you Choosing which part of your video survives is an editing decision, and it stays yours.
Blurred backdrop built in The look every vertical feed uses for footage that was filmed wide, done in your browser.
MP4 and h264 only The short format list is deliberate. It is the combination no platform refuses.
A whole shoot in one pass Line up all of the clips from one session and give each the preset it needs. The settings below cover the row by default; any clip you touch keeps its own choice from then on.
Nothing leaves your device Your unposted video is not uploaded to a third party on the way to being posted.

About the Social Media Video Resizer

Sizing a video for social media is three separate questions that get asked as one. What shape does this placement use, how many pixels does it want, and how long is it allowed to be. People usually know none of the three, because none of them are things a person should have to know. What they know is that the video is going on Reels.

So that is the only question this page asks. Pick the placement and the rest follows: 1080 x 1920 for anything vertical, 1080 x 1350 for the Instagram portrait feed, 1080 x 1080 for a square post, 1920 x 1080 for ordinary YouTube. These are the platforms' own recommended numbers rather than an arbitrary ladder, and going above them is wasted effort, because every platform re-encodes what it receives on the way in.

The length limit is reported and never applied. It would be easy to notice that a clip is 90 seconds long, that Shorts allows 60, and to cut the first minute automatically. It would also be wrong almost every time. Which minute of a video matters is an editing decision, and handing it to a resizer is how people end up posting the wrong part of their own work. The page says the clip is too long, points at the trimmer, and stops.

For the space left over when a wide clip goes into a tall frame, the blurred copy of the footage is usually the right answer. It keeps the whole picture, it avoids the black bars that mark a clip as borrowed, and it is the look that vertical feeds have settled on. Cropping is there for the times the subject sits in the middle and the edges carry nothing, and plain bars are there because sometimes the simplest thing is what you want.

Frequently Asked Questions

Reels, TikTok, Shorts and feed posts.

1080 x 1920, which is 9:16. Shorts and Instagram stories use the same numbers. Uploading something larger gains nothing, since the platform re-encodes it down to about this size on the way in.

No, deliberately. It tells you that it is too long and leaves it alone. Which 60 seconds of your video are the important ones is a decision only you can make, and a tool that quietly keeps the first minute would often keep the wrong one. Use the trimmer, then come back here.

Crop when the subject is in the middle and the edges carry nothing. Use the blurred fill when the framing matters, when there is text near the sides, or when you simply do not want to lose anything. The blurred version is slower to encode but keeps the whole picture.

Because MP4 with h264 is the one thing every platform accepts without argument. Offering WebM here would only invite an upload that gets refused, and the extra choice would not do anyone any good.

It takes up more vertical space as someone scrolls, which is the whole argument for it. Square is safer if the same file is going to several platforms, since it looks the same everywhere.

Yes. Put them all in the strip, leave most of them on the shared preset, and click the one or two that belong somewhere else to give them their own. Everything is processed one clip at a time and collected at the end.

No. Nothing is drawn onto your video here. It is worth knowing that feeds cover roughly the bottom fifth of the frame with their own interface, so keep anything important away from that edge while you are filming or editing.

Every Other Video Tool

76 more tools in this set. All free, all in your browser.

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