PureTools
Rotate a Video 90°, 180° or Flip It, Free & Private
Fix a sideways or upside-down video directly in your browser. MP4 and MOV files are rotated instantly without re-encoding, so quality stays identical and even multi-gigabyte files finish in seconds. You can also flip (mirror) any video. No upload, no watermark, 100% private.
Drop your video here
or · no size limit for MP4/MOV
Preparing…
How to rotate a video
This tool turns a sideways or upside-down video the right way up, entirely in your browser. No account is needed, no file is uploaded to a server, and no watermark is added. For MP4 and MOV files the rotation is instant and lossless, whatever the file size.
- Select your video, drag and drop a video file onto the zone, or click Browse. MP4, MOV, AVI, WEBM and MKV are supported. MP4 and MOV have no size limit; other formats up to 500 MB.
- Choose the rotation, click Rotate left or Rotate right until the preview looks right. You can also flip the video horizontally or vertically. The player shows the result live before anything is processed.
- Set the output filename, the field is pre-filled from your video with a
-rotatedsuffix. Change it to anything you prefer. - Click Rotate video, MP4 and MOV files are rotated instantly without re-encoding. Flips and other formats are re-encoded locally; the first re-encode downloads a one-time local engine (~30 MB).
- Download your file, check the result in the player, then click Download to save it. The file is discarded from memory when you close the tab.
Why MP4 and MOV rotation is instant and lossless
MP4 and MOV files carry a small piece of display metadata, a transform matrix, that tells every player how to orient the picture. It is exactly how your phone records portrait video: the sensor always films sideways and the file simply says "show this rotated". This tool rewrites those 36 bytes and streams the rest of your file through untouched. Every pixel stays byte-for-byte identical, there is nothing to re-compress, and even a multi-gigabyte file finishes in seconds using almost no memory. Rotation metadata is honored by all modern browsers, VLC, QuickTime and the built-in players of every current OS; for very old players you can tick Compatibility mode to physically re-encode instead.
Privacy and data handling
Your video file never leaves your device. The processing runs in your browser without any server involvement, the same way the Video Muter handles its files. Your file is held in browser memory only for the duration of the operation and is cleared as soon as you close the tab.
Frequently asked questions
Is my video file uploaded to a server?
No. Your video file never leaves your device. The entire process runs inside your browser. PureTools has no server infrastructure to receive files. Your file is processed in your browser's memory and discarded when you close the tab. Your data is never used to train AI models or improve machine learning systems.
Does rotating reduce the video quality?
For MP4 and MOV files, no. The rotation is written into the file's display metadata, the same mechanism phones use when you record in portrait, so every pixel of the video stream stays byte-for-byte identical and the result is ready instantly. Flips and other formats (AVI, WEBM, MKV) need a local re-encode, performed at high quality settings.
Will the rotation show up everywhere?
Metadata rotation is respected by every modern browser (Chrome, Safari, Edge, and Firefox since 2016), by VLC, QuickTime, Windows and macOS players, and by phones. If you need to play the file on a very old device or import it into software that ignores rotation metadata, enable Compatibility mode before rotating: the video is then physically re-encoded with the rotation baked into the pixels.
What video formats are supported?
MP4, M4V and MOV are rotated instantly and losslessly with no file size limit. AVI, WEBM and MKV are supported up to 500 MB and are re-encoded to MP4 locally. Flipping (mirroring) always re-encodes, whatever the format.
Is there a file size limit?
For plain rotation of MP4, M4V and MOV files there is no size limit: the tool rewrites 36 bytes of metadata and streams the rest of the file untouched, so even multi-gigabyte videos are rotated in seconds with almost no memory used. Operations that need a re-encode (flips, Compatibility mode, AVI/WEBM/MKV) are limited to 500 MB to protect your device's memory.
Is my data erased when I close the tab?
Yes, completely. Your video exists only in your browser's memory for the duration of your session. Your output filename preference is saved only for the current session and erased when you close the tab. No file content and no personal information is ever written to disk by this tool or transmitted to any server.