Crop or blur-pad, in the tab
A 16:9 screen recording, a Twitch clip, or a 24 fps AI render is the usual input. Shorts will not shelf it. TikTok and Reels will crop or pad it without asking you. This converter makes the 1080×1920 file first, then shows you whether the crop ate a caption or a face.
Crop keeps the center and scales to 1080×1920. Blur-pad fills the frame with a blurred copy of the same shot and puts the full 16:9 picture in the middle. Both re-encode to H.264 High, AAC, 30 fps, with the moov atom at the front. The encoder is a single-threaded ffmpeg build loaded only after you click.
MP4, MOV, WebM, or a thumbnail. Duration, resolution, aspect, fps, codec, and file size are read here. Nothing is uploaded.
Web uploads through TikTok Studio run up to 30 minutes. 720×1280 is the published floor and 1080×1920 is the size creators should actually export.
| Check | Value | If missed | Confidence | Verified | Source |
|---|---|---|---|---|---|
| Web upload length | 30 min | fail | Official | 2026-10-19 | TikTok Creator tools |
| Creator Rewards length | 1 min | warn | Cited | 2026-10-19 | How to post videos on TikTok (TrackMedia) |
| Minimum vertical frame | 720×1280 | fail | Official | 2026-10-19 | TikTok Creator tools |
| Recommended frame | 1080×1920 | warn | Cited | 2026-10-19 | TikTok Creator tools |
| Aspect ratio | 9:16 | warn | Cited | 2026-10-19 | TikTok auction in-feed ads |
| Web file size | 10 GB | fail | Official | 2026-10-19 | TikTok Creator tools |
| Container | MP4 or WebM | warn | Official | 2026-10-19 | TikTok Creator tools |
| Video codec | H.264, HEVC, VP8, VP9 | warn | Cited | 2026-10-19 | How to post videos on TikTok (TrackMedia) |
| Minimum frame rate | 23 fps | warn | Cited | 2026-10-19 | How to post videos on TikTok (TrackMedia) |
| Maximum frame rate | 60 fps | warn | Cited | 2026-10-19 | How to post videos on TikTok (TrackMedia) |
240 top / 660 bottom / 120 left / 120 right
Scaled ×1.5 from TikTok's 720×1280 in-feed template (top 160, bottom 440, sides 80). The right action column is an approximate cited range of about 180–300 px wide starting near y=840; this overlay draws the wide end, 300×420.
Cited · 2026-10-19 · TikTok auction in-feed ads
200 top / 500 bottom / 0 left / 250 right
Organic write-ups disagree: top 130–200, bottom 370–500, right rail 140–250. Measured mode draws the high end of that range. A left inset is not consistently published, so it stays 0. See also https://www.socialync.io/tools/safe-zones.
Measured · 2026-10-19 · AdKit TikTok safe zone
Reels can run 20 minutes, but anything past 3 minutes is a poor bet for new audiences. The Help Center wants at least 30 fps.
269 top / 672 bottom / 65 left / 65 right
14% top, 35% bottom, 6% each side of a 1080×1920 frame (269 / 672 / 65 / 65), from Meta's Reels ads guide. The Help Center pages cover length and frame rate; the ads-guide percentages were recorded in the 2026-10-19 research pass and are also cited by https://postminion.com/blog/instagram-reels-length-and-size-limits.
Cited · 2026-10-19 · Instagram Help — Reels
No separate measured margin is stored for this platform.
A Short is square or vertical and at most 3 minutes. Google's ad safe zone (288 / 672 / 48 / 192) is stricter than most organic templates.
| Check | Value | If missed | Confidence | Verified | Source |
|---|---|---|---|---|---|
| Shorts length | 3 min | fail | Official | 2026-10-19 | YouTube Help — Shorts |
| Content ID window | 1 min | warn | Official | 2026-10-19 | YouTube Help — Shorts |
| Square or vertical | square or taller | fail | Official | 2026-10-19 | YouTube Help — Shorts |
| Recommended aspect | 9:16 | warn | Cited | 2026-10-19 | Google Ads — vertical video specs |
| Minimum vertical frame | 720×1280 | fail | Official | 2026-10-19 | Google Ads — vertical video specs |
| Recommended frame | 1080×1920 | warn | Official | 2026-10-19 | YouTube Help — Shorts |
| Upload size | 256 GB | fail | Official | 2026-10-19 | YouTube Help — Shorts |
| Video codec | H.264, HEVC, VP8, VP9, AV1 | warn | Official | 2026-10-19 | YouTube Help — Shorts |
| Container | MP4, WebM, or MOV | warn | Official | 2026-10-19 | YouTube Help — Shorts |
288 top / 672 bottom / 48 left / 192 right
Taken from Google's vertical ad safe-zone image, also cited by https://www.socialync.io/tools/safe-zones. These margins are for ads. The organic Shorts player is not the same picture.
Cited · 2026-10-19 · Google Ads — vertical video specs
380 top / 380 bottom / 0 left / 0 right
CheckSafe.Zone lists Shorts top and bottom at 380 px, which disagrees with Google's 288 / 672 ad image. Side insets were not recorded from that page, so measured mode does not invent them.
Measured · 2026-10-19 · CheckSafe.Zone
As of June 2025 Meta treats Facebook video as Reels and dropped the organic length cap. The Page API is still 3–90 seconds.
| Check | Value | If missed | Confidence | Verified | Source |
|---|---|---|---|---|---|
| Page API length | 90 s (API) | warn | Cited | 2026-10-19 | Facebook Reels Publishing API |
| API minimum length | 3 s | warn | Cited | 2026-10-19 | Facebook Reels Publishing API |
| Recommended aspect | 9:16 | warn | Cited | 2026-10-19 | Facebook Reels Publishing API |
| API minimum frame | 540×960 | warn | Cited | 2026-10-19 | Facebook Reels Publishing API |
| Recommended frame | 1080×1920 | warn | Cited | 2026-10-19 | Sprout Social video specs guide |
| Minimum frame rate | 24 fps | warn | Cited | 2026-10-19 | Sprout Social video specs guide |
| Maximum frame rate | 60 fps | warn | Cited | 2026-10-19 | Sprout Social video specs guide |
| Video codec | H.264, HEVC, VP9, AV1 | warn | Cited | 2026-10-19 | Sprout Social video specs guide |
| Audio codec | AAC-LC | warn | Cited | 2026-10-19 | Sprout Social video specs guide |
| Container | MP4 | warn | Cited | 2026-10-19 | Facebook Reels Publishing API |
269 top / 672 bottom / 65 left / 65 right
Assumed identical to Instagram Reels (14% / 35% / 6% / 6%) because Meta's Reels ads guidance uses one safe zone for both apps. Not confirmed for the Facebook organic player. See also https://sproutsocial.com/insights/social-media-video-specs-guide.
Cited · 2026-10-19 · Meta newsroom — Facebook video, June 2025
No separate measured margin is stored for this platform.
Free accounts get 2 minutes 20 seconds and 512 MB. Premium lasts longer, but the published paid caps do not agree with each other. There is no official safe zone.
| Check | Value | If missed | Confidence | Verified | Source |
|---|---|---|---|---|---|
| Free account length | 2 min 20 s | fail | Cited | 2026-10-19 | X Help — longer videos on Premium |
| Free account file size | 512 MB | fail | Cited | 2026-10-19 | Clideo — X video specs |
| Narrowest aspect | 1:3 | fail | Cited | 2026-10-19 | X API — media best practices |
| Widest aspect | 3:1 | fail | Cited | 2026-10-19 | X API — media best practices |
| Recommended aspects | 16:9, 1:1, or 9:16 | warn | Cited | 2026-10-19 | X API — media best practices |
| Maximum frame rate | 60 fps | warn | Cited | 2026-10-19 | X API — media best practices |
| Video codec | H.264 | warn | Cited | 2026-10-19 | X API — media best practices |
| H.264 profile | High | warn | Cited | 2026-10-19 | X API — media best practices |
| Audio codec | AAC-LC | warn | Cited | 2026-10-19 | X API — media best practices |
| Container | MP4 or MOV | warn | Cited | 2026-10-19 | BuzzVoice — how long X videos can be |
X has not published a safe zone. Nothing is drawn for this platform, and it is left out of the combined overlay so we do not invent a margin.
No separate measured margin is stored for this platform.
No. ffmpeg.wasm runs in the page. The first conversion downloads about 30 MB of encoder code from this site, then the rest stays on the device.
Crop when the subject is in the center and you want a real full-screen Short. Blur-pad when the edges of the 16:9 frame have information you cannot lose, like a HUD or a second person.
1080×1920 MP4, H.264 High, AAC at 48 kHz when the source has audio, 30 fps, fast start. Images download as PNG instead.