Is Square with blurred background free? Is there a watermark?

Yes — Square with blurred background is free to use with no sign-up or watermark. Very large files can still be limited by your browser's available memory and processing resources.

Do my files get uploaded to a server?

No. Square with blurred background runs entirely in your browser with WebAssembly, so your MP4, MOV, WebM, MKV file never leaves your device and nothing is stored or seen by us.

What can I put in, and what do I get out?

Square with blurred background accepts MP4, MOV, WebM, MKV and gives you back a MP4 file. You can also set size before you run it. Actual codec support depends on what the bundled engine or browser decoder can read.

Can I control the output?

Yes — you can adjust size, so you decide the balance between file size and quality.

Free tools · Compress & resize

Square with blurred background

Turn any video into a 1:1 square for social feeds — filling the empty space with a blurred version of the footage itself instead of plain bars. Runs entirely in your browser.

Runs entirely in your browser. Your file is never uploaded — no watermark, no account.

Drop a file or click to chooseMP4, MOV, WebM, MKV

Get a better result

Best for: Fitting portrait or landscape footage into a square social frame without cutting off the centered foreground subject.
Input → output: Video becomes a 720×720 or 1080×1080 H.264 MP4 with a blurred, cropped source layer behind a centered full-frame foreground and AAC audio.
Quality tip: Use 720 when the destination does not need 1080. Check that foreground text remains readable in the square composition.
Know before running: The background blur strength and foreground position are fixed. Small sources may be upscaled, off-center subjects are not tracked, and the operation re-encodes the video.
Next step: Compress video to try alternate delivery settings for the completed square asset.

How to use Square with blurred background

1
Choose your file. Drop a supported MP4, MOV, WebM, MKV file into the tool, or click to select one. It stays on your device — nothing is uploaded.
2
Pick your settings. Adjust the available options, then press Run. The first processing run loads the browser engine before conversion begins.
3
Download. Review the result, then download the finished file from your browser with no watermark.

Frequently asked questions

Is Square with blurred background free? Is there a watermark?: Yes — Square with blurred background is free to use with no sign-up or watermark. Very large files can still be limited by your browser's available memory and processing resources.
Do my files get uploaded to a server?: No. Square with blurred background runs entirely in your browser with WebAssembly, so your MP4, MOV, WebM, MKV file never leaves your device and nothing is stored or seen by us.
What can I put in, and what do I get out?: Square with blurred background accepts MP4, MOV, WebM, MKV and gives you back a MP4 file. You can also set size before you run it. Actual codec support depends on what the bundled engine or browser decoder can read.
Can I control the output?: Yes — you can adjust size, so you decide the balance between file size and quality.