Check a video file against the standard TikTok spec — 1080 × 1920, 9:16 — by reading its metadata locally, with no upload.
TikTok recommends vertical video at 1080 × 1920 pixels in a 9:16 aspect ratio, commonly MP4 or WebM. This checker loads the selected file into a local video element and reads its intrinsic width, height, duration and file size, then compares each value with the recommended spec. A video can still be uploaded at other sizes — the checks flag where re-exporting at the recommended settings would improve sharpness or avoid letterboxing.
What is the recommended TikTok video size? 1080 × 1920 pixels, vertical, with a 9:16 aspect ratio. Common limits and recommendations change over time, so treat the values here as the widely used publishing spec rather than a hard upload block.
Why does a 720 × 1280 video show a warning? It has the correct 9:16 shape but lower resolution than the recommended 1080 × 1920, so it may look softer after platform compression. Re-exporting from the original at 1080 × 1920 usually helps.
Is the video uploaded for checking? No. Metadata is read from the local file with the browser video element. The file never leaves the device.