Resize Video for TikTok
Crop and resize any video to TikTok's 9:16 vertical format (1080×1920px). Works entirely in your browser — your video never leaves your device.
Drop your video here or click to upload
MP4, MOV, WebM, AVI · Max 500MB100% Private
Everything runs in your browser. Your video is never uploaded anywhere.
Smart Crop
Adjust crop position to keep the most important part of your video.
TikTok-ready
Exact 9:16 format — ready to upload directly to TikTok.
What is TikTok Video Resizer?
The TikTok Video Resizer is a free browser-based tool that crops and converts any video to TikTok's required 9:16 vertical format (1080×1920 pixels). Videos filmed horizontally (16:9) or in square format do not display properly on TikTok — they appear with black bars on the sides or top and bottom, which reduces watch time and engagement. The TikTok Video Resizer automatically crops your video to the 9:16 ratio, lets you adjust the crop position to keep the most important part of your video, and exports a TikTok-ready file — all in your browser without uploading to any server.
How to use TikTok Video Resizer
- Step 1: Upload your video by clicking the upload area or dragging it onto the tool.
- Step 2: The tool shows a 9:16 crop preview of your video.
- Step 3: Use the crop position slider to adjust which part of the video is visible in the crop window.
- Step 4: Select your output quality — Medium is recommended for the best balance of quality and file size.
- Step 5: Click Convert for TikTok to process the video in your browser.
- Step 6: Download your TikTok-ready video and upload directly to TikTok.
Tips for better results
- Center on the main subject. Use the crop position slider to ensure the most important visual element — your face, product, or main action — is centered in the 9:16 crop window.
- Film vertically from the start. The best TikTok videos are filmed vertically from the beginning. Use this tool to fix existing horizontal footage, but for future videos always film in portrait mode.
- Check for text and captions at the edges. If your video has on-screen text or captions near the edges of a horizontal video, make sure they remain visible after the 9:16 crop.
- TikTok's ideal resolution is 1080×1920. The resizer outputs video at this resolution — the standard for full-quality TikTok videos.
- Keep videos under 60 seconds for best reach. While TikTok allows longer videos, the algorithm tends to favour videos under 60 seconds for initial distribution. Trim before resizing if needed.
- Preview before downloading. Always preview the crop result before downloading to ensure the most important elements are visible in the final video.
Frequently Asked Questions
What video format does TikTok require?
TikTok recommends MP4 or MOV format, 9:16 aspect ratio, 1080x1920 pixel resolution, H.264 codec, and under 287.6MB file size. The TikTok Video Resizer outputs video meeting these specifications.
Can I resize any video for TikTok?
Yes. The tool accepts MP4, WebM, and MOV files. Any horizontal, square, or vertical video with a non-9:16 ratio can be cropped and resized to TikTok's vertical format.
Will the video quality change after resizing?
The crop operation itself does not reduce quality — it simply removes the areas outside the 9:16 frame. Output quality depends on your selected quality setting. Medium quality produces excellent results for TikTok.
Is my video uploaded during the process?
No. All resizing and cropping happens in your browser. Your video file never leaves your device.
Does this work for Instagram Reels too?
Yes. Instagram Reels also uses the 9:16 vertical format. Videos resized for TikTok will also be correctly formatted for Instagram Reels and YouTube Shorts.