Vertical Video and Social Media Resizer
ReadyPrepare video in 9:16 for Reels, YouTube Shorts and TikTok, or 4:5/square for Instagram and Facebook posts.
All tools are free to use. File size and processing limits may vary by tool.
How to use
Prepare video in 9:16 for Reels, YouTube Shorts and TikTok, or 4:5/square for Instagram and Facebook posts. Export MP4 using cropping, colour padding or a blurred background. One MP4, MOV, WebM or MKV: up to 20 MB, 120 seconds, 1920 pixels per side, 1080p-equivalent pixels and 60 fps. Output is 720 × 1280, 720 × 900 or 720 × 720 MP4 at 30 fps. These are tool limits, not platform upload limits.
Browser tools keep files on your device. Advanced document tools upload files for temporary server processing; the tool shows this before upload. Web lookups send queries to the server and public lookup services.
Vertical Video and Social Media Resizer
Prepare video in 9:16 for Reels, YouTube Shorts and TikTok, or 4:5/square for Instagram and Facebook posts. Export MP4 using cropping, colour padding or a blurred background.
Read the guide →Related tools
Video compressor and MP4 converter
Video compressor and MP4 converter. MP4, MOV, WebM or MKV; one file up to 20 MB, 120 seconds, 1080p-equivalent pixels and 60 fps.
Extract MP3 from video
Extract MP3 from video. MP4, MOV, WebM or MKV; one file up to 20 MB, 120 seconds, 1080p-equivalent pixels and 60 fps.
Trim video
Trim video. MP4, MOV, WebM or MKV; one file up to 20 MB, 120 seconds, 1080p-equivalent pixels and 60 fps.
Screen Recorder
Record your screen. Microphone and system audio toggle separately and the recording stays on your device. Nothing is uploaded to a server.
Audio Editor
Up to 8 files, 50 MB and 10 minutes. Set each clip’s start and end in seconds, reorder them, apply volume and fade in/out. Trim silence automatically against a threshold and see how much will be removed before rendering. Normalize the level to a −1, −3 or −6 dBFS peak target. Output is stereo 44.1 kHz WAV or 128 kbps MP3. Everything runs in your browser, so nothing is uploaded.
Video Thumbnail Creator
Choose a frame from your own video for a YouTube thumbnail, Instagram/Reels cover, TikTok image or Facebook post.
Continue with the next step
When MP4 is ready, next-tool buttons appear in the result area. Transfer it to the subtitle editor or thumbnail tool without downloading and uploading again. You can also send subtitled video for resizing.
Transfer happens between open tabs; we do not save the file in browser storage for this. This step does not start a new upload. Choosing server processing in the destination uploads the file again; its size limit applies.
Prepare video in 9:16 for Reels, YouTube Shorts and TikTok, or 4:5/square for Instagram and Facebook posts. Export MP4 using cropping, colour padding or a blurred background.
Video is uploaded for processing. The download link expires about 60 minutes after upload; scheduled cleanup removes files. Processing uses a queue.
One MP4, MOV, WebM or MKV: up to 20 MB, 120 seconds, 1920 pixels per side, 1080p-equivalent pixels and 60 fps. Output is 720 × 1280, 720 × 900 or 720 × 720 MP4 at 30 fps. These are tool limits, not platform upload limits.
Focus sliders affect crop mode only; there is no automatic person tracking. Background colour applies to padding only. The first audio track, if present, is re-encoded to AAC; video is also re-encoded lossily. Smaller size and platform acceptance are not guaranteed. Check framing, text and sound before posting.