b2KIT

TikTok Post Previewer

Preview TikTok video posts with caption, hashtags, and audio label. Check text overlay safe zones and character limits for descriptions.

Tested tool guide Tested browser tools Checked August 16, 2026

What TikTok Post Previewer does, with a checked example

You assemble a TikTok post the way the upload screen expects it: caption with hashtags, and the audio label that rides below it. The tool renders the whole thing inside a phone-frame For You feed mock, with the platform's own layout - username, two-line caption, link-styled hashtags, the audio ticker, and the right-side action rail - and overlays the safe zones where that UI covers the video frame. The surprise most people hit first: the feed shows only the first two lines of a caption, and the 2,200-character limit is the upload box, not what anyone sees in-feed.

Worked example

A concrete input and expected output from the current implementation.

Input

Caption: "10 things I wish I knew before starting my first garden #gardening #beginner #gardentips #diy #outdoors"
Audio label: Original sound - @gardenwithjo
Video: 9:16 portrait

Expected output

Character check: 103 of 2,200 - within limit. Hashtags: 5, rendered as link text. Feed preview: caption wraps to two lines, then a 'Show more' toggle; the audio label 'Original sound - @gardenwithjo' sits below the caption. Safe-zone guides mark the right action rail, the bottom caption block, and the top tab bar as covered areas of the video frame.

The body text is 55 characters and the hashtag segment is 48, so the whole caption is 103 characters - comfortably inside the 2,200-character upload limit. The preview still cuts it after two lines because in-feed truncation is independent of the limit.

How the result is produced

1

Feed rendering

The tool rebuilds the For You feed layout around your post: a bold username line, a caption that wraps to two lines and then gains a 'Show more' toggle, hashtags styled as link text, and the audio strip pinned under the caption showing 'Original sound - @handle' or 'Song - Artist'. The video frame occupies the 9:16 portrait area the feed shows behind this chrome.

2

Checks and measurements

Counting mirrors the upload box: every character, space, and line break counts toward the 2,200-character limit, and each emoji counts as one. Hashtags are extracted as tokens that start with '#', and the tool reports their count and their share of the total length. Safe-zone guide lines sit where the right action rail, bottom caption block, and top tab bar typically cover the frame.

Good uses

  • Checking that a hook or call to action sits in the first two visible caption lines, not behind 'Show more'.
  • Positioning text baked into the video so it clears the right action rail and bottom caption strip before exporting.
  • Confirming the full caption and hashtag set fits the 2,200-character upload limit before scheduling a post.

Limits and checks

  • Safe-zone guides are estimates, not a pixel guarantee: action rail and caption block widths vary by device, zoom level, and app version, so coverage lines mark typical, not exact, positions.
  • Passing the character check does not mean the caption is fully visible in feed, which truncates after about two lines regardless of remaining limit headroom.
  • Soft warnings such as hashtag-count advice are best practice, not enforced platform rules, and the audio label wording depends on whether the audio is an original sound or a licensed track.

Common questions

Why does my whole caption not show even though I am under 2,200 characters?

The 2,200-character figure is the limit of the upload field, not the feed. In the For You feed, TikTok shows the first two lines of a caption - roughly the first 100-120 characters depending on screen width - followed by a 'Show more' link. Scrollers see only that opening, so the hook and the call to action belong in the first line.

Does this show how my actual video will look?

No. The preview renders the post chrome - caption, hashtags, audio label, and cover frame - plus the zones where TikTok's UI covers the picture. It cannot play your video file or render text baked into the video itself. Position on-video text against the safe-zone guides yourself, or upload the finished export as the cover to check it in context.

References and verification

The example and behavioral notes were checked against the browser implementation. Standards and primary references below define the relevant format, formula, or platform behavior.

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