Resize Video for TikTok
Convert any video to 9:16 vertical format for TikTok
Drop your video here
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Supports MP4, WebM, MOV, AVI (Max 500MB)
TikTok videos perform best in 9:16 vertical format. Horizontal videos may be cropped or display with black bars.
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100% Private & Secure
Your videos are processed entirely in your browser using local hardware acceleration. No files are ever uploaded to any server, and no data leaves your device. This TikTok video resizer runs completely offline once the page loads, so your content stays private from start to finish. Whether you are resizing personal clips or branded content, your footage remains yours alone.
Free TikTok Resizer Forever
Our free TikTok resizer requires no sign-up, no account creation, and no subscription. There are no watermarks stamped on your output, no daily limits on how many videos you can resize for TikTok, and absolutely no hidden fees. Use it as often as you need to convert videos to the TikTok vertical format without any cost, today and every day.
TikTok-Optimized 9:16 Output
Every video is converted to the perfect 9:16 aspect ratio at full 1080x1920 resolution, which is the recommended TikTok video size. This ensures your content fills the entire mobile screen without black bars or awkward cropping by the platform. The TikTok video dimensions we output match exactly what the algorithm prefers for maximum reach and engagement.
Smart Cropping Controls
When you resize video for TikTok from a horizontal or landscape source, our smart cropping system lets you choose exactly which portion of the frame to keep. Select the top, center, or bottom region so the most important part of your scene remains in the final 9:16 video. This intelligent framing means you never lose the subject of your shot during conversion.
Lightning-Fast Processing
Because our TikTok video resizer runs directly in your browser using hardware-accelerated Canvas rendering, processing is remarkably fast. Most videos under five minutes resize in seconds rather than minutes. There is no waiting in upload queues or server processing delays. Drop your file, choose your crop, and download the TikTok-ready result almost instantly.
Universal Format Support
Upload videos in MP4, WebM, MOV, or AVI format and our resizer handles them all. Whether your footage comes from an iPhone, Android device, DSLR camera, or screen recording software, this TikTok video resizer converts it to the correct TikTok video format. The output is a high-quality WebM file fully compatible with TikTok uploads and other social media platforms.
Free TikTok Video Resizer
TikTok demands videos in a 9:16 vertical format for the best possible viewing experience on mobile devices. Our free TikTok video resizer helps you convert any video to the perfect 1080x1920 resolution, ensuring your content looks sharp, professional, and fully optimized for the platform. Whether you are a creator repurposing landscape footage from YouTube, a brand reformatting advertising clips, or a casual user sharing everyday moments, this TikTok video resizer handles the conversion seamlessly. The tool processes everything locally in your browser, meaning your files never leave your device and your privacy remains intact. No sign-up is required, no watermarks are added, and there are no limits on usage. Start resizing your videos for TikTok in seconds with the most straightforward free TikTok resizer available online.
How to Resize Videos for TikTok
Resizing a video for TikTok with our tool takes just three simple steps. First, drag and drop your video file onto the upload area or click to browse your device. The TikTok video resizer accepts MP4, WebM, MOV, and AVI formats up to 500MB in size. Second, if your video is in landscape or portrait orientation that does not match the 9:16 ratio, choose your preferred crop position. You can keep the top, center, or bottom portion of the frame so the most important content remains visible. Third, click the resize button and wait a few seconds while the browser processes your file. Once complete, download your perfectly formatted 9:16 video and upload it directly to TikTok. The entire workflow happens locally on your device with zero server involvement, giving you both speed and privacy.
TikTok Video Requirements and Dimensions
Understanding TikTok video dimensions is essential for creators who want their content to perform well on the platform. TikTok recommends a 9:16 aspect ratio with a resolution of 1080x1920 pixels for standard vertical video. This TikTok video size fills the entire screen on smartphones, eliminating black bars and providing an immersive viewing experience. Videos uploaded in other ratios, such as 16:9 landscape or 1:1 square, may be automatically cropped or displayed with letterboxing, which reduces visual impact and can hurt engagement metrics. The maximum file size for TikTok uploads is typically 287MB for iOS and 72MB for Android, though these limits change periodically. Our TikTok video resizer outputs files well within these constraints while maintaining high visual quality at the correct TikTok video format specifications.
Why 9:16 Vertical Video Matters for TikTok
The 9:16 vertical video format is not just a recommendation from TikTok; it is a critical factor in how the algorithm distributes your content. Videos that match the native TikTok video dimensions of 1080x1920 receive preferential treatment in the For You feed because they deliver the best user experience on mobile screens. When a viewer scrolls through TikTok, vertical videos fill the entire display without any wasted space, creating an immersive experience that keeps people watching longer. Higher watch time signals to the algorithm that your content is engaging, which leads to broader distribution. Uploading a landscape video without resizing it first results in a smaller viewing area, lower watch-through rates, and ultimately fewer impressions. Using a TikTok video resizer to convert your content to the proper 9:16 format before uploading is one of the simplest and most effective optimizations any creator can make.
Resize Video for TikTok from Any Source
Content creators often need to repurpose footage from multiple sources for TikTok. You might have a cinematic landscape clip from a DSLR, a screen recording from your desktop, gameplay footage captured at 16:9, or a promotional video originally made for YouTube. Our TikTok video resizer handles all of these scenarios. The smart cropping system intelligently frames the most important part of your video when converting from landscape to the 9:16 TikTok vertical video format. For videos that are already vertical but not exactly 9:16, the resizer adjusts the framing to match the correct TikTok video dimensions precisely. This flexibility means you can maintain a consistent posting schedule on TikTok by easily reformatting content you have already created for other platforms, saving time and maximizing the return on your production effort.
Browser-Based TikTok Video Format Conversion
Unlike most online video tools that require you to upload your files to a remote server, our TikTok video resizer performs all processing directly in your web browser using the Canvas API and MediaRecorder. This architecture delivers several important advantages. First, your video files never leave your device, which means complete privacy and security for sensitive or unreleased content. Second, there is no upload or download wait time from a server, so the resize process is limited only by your local hardware speed. Third, you are never placed in a processing queue behind other users. The tool uses hardware-accelerated rendering to draw each frame at the target 1080x1920 resolution and encodes the output with VP9 at up to 8 Mbps for excellent quality. This makes it the fastest and most private way to resize video for TikTok without installing any desktop software.
TikTok Video Size Tips for Maximum Engagement
Getting the TikTok video size right is just the starting point for maximizing your reach. Beyond converting to the 9:16 aspect ratio, there are several best practices to keep in mind. Keep your videos between 15 and 60 seconds for the highest completion rates, as TikTok's algorithm heavily rewards watch-through percentage. Place your key subject in the center of the frame, since the 9:16 vertical format naturally draws the eye to the middle of the screen. Avoid placing important text or visuals in the top or bottom 15 percent of the frame, where TikTok overlays the caption, username, and interaction buttons. When using our TikTok video resizer, take advantage of the crop position selector to frame your content perfectly. Choosing the right crop region during the resize process can be the difference between a video that feels professionally produced and one that appears carelessly cropped.
Free TikTok Resizer for Every Creator
Whether you are a solo content creator just starting out, a social media manager handling multiple brand accounts, or a professional video editor reformatting deliverables for clients, our free TikTok resizer is built to serve your needs. The tool requires no downloads, no account creation, and no payment. It works on any modern browser across Windows, macOS, Linux, and Chromebook devices. Because all processing is local, you can resize videos for TikTok even on slow or metered internet connections. The output is consistently formatted to the ideal TikTok video dimensions of 1080x1920 at the 9:16 aspect ratio, ensuring platform compatibility every time. We designed this TikTok video resizer to remove every barrier between your raw footage and a TikTok-ready video, so you can focus on what matters most: creating great content that resonates with your audience.