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Safe Zone Simulator

Test TikTok UI overlays on your videos.

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Safe ZoneTikTok · Reels · ShortsCSV · JSON

Safe Zone Simulator

Validate caption, title, and UI column before publishing.

Platform

TikTok

Safe area

43.6%

Caption

778×346

Media

1080×1920

01

Input & Preset

Vertical media
Platform
Title
Caption
Subtitle
Title alignment
Caption lines
Visible overlays
Extra top margin (%)
Extra bottom margin (%)
Extra left margin (%)
Extra right margin (%)
UI scale
Caption start (%)
UI top (%)

02

Visual Preview

Upload media
to see overlays
9:41
Following
For You
safe
Safe title
Main caption
Subtitle or CTA
2 lines · 778px
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1.2M
45K
12K
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TikTok: 43.6% safe area with caption below 1190px and UI column occupying 216px.
Safe area
735×1229
Title
735×230
Caption
778×346
Side UI
216×1171
Base offset
1190px
UI top
499px
Sobre

What is Safe Zone Simulator?

Por Quorify EditorialAtualizado em

Quorify's Safe Zone Simulator lets you test TikTok UI overlays on your videos. Video processing happens locally in your browser via WebCodecs API and native codecs—ideal when handling sensitive video and you prefer not to upload to external servers. Supports modern codecs (H.264, H.265, AV1, WebM) following ITU-T and ISO/IEC standards. Part of the Quorify video toolkit. For details on data handling, see our Privacy Policy.

Casos

When to use

  1. Edit short-form video for social media without installing heavy editors.

  2. Prepare content for TikTok, Instagram Reels, or YouTube Shorts.

  3. Trim, convert, or extract audio from mobile-recorded video.

  4. Speed up content creator workflow with fast pre-processing.

  5. Handle one-off video tasks without professional software licenses.

Método

How it works

Safe Zone Simulator uses WebCodecs API (when available) or WebAssembly libraries (FFmpeg.wasm) implementing internationally recognized codecs. Processing is local. Very long or high-resolution (4K) videos may be limited by browser performance.

FAQ

Frequently asked questions

Is the video uploaded to a server?
No. Processing happens locally in your browser. For full details on data handling, see our Privacy Policy.
Does it work with long videos?
Yes, but videos over ~1 GB or in 4K may slow down in the browser. For professional content, consider specialized desktop tools.
Which codecs are supported?
H.264 (MP4), H.265 (HEVC), WebM (VP8/VP9), AV1—when supported by the browser. Support varies by browser and device.
Does it preserve quality?
Lossless operations (trim, extract audio) preserve quality. Conversions may involve loss depending on the target codec.
Does it work on mobile?
Yes in modern browsers, but with performance limitations. Short videos (up to 1 min) work well; longer ones may lag.
Does it support captions and markers?
Varies by tool. Check the specific tool's interface to confirm advanced features.
Fontes

Official sources

Tabelas, leis e referências consultadas para fundamentar esta ferramenta.

  1. Official documentationCurrentGoogle Web Dev

    Web Video Best Practices

    Google guidelines on encoding, compression, and delivering web video—modern formats (WebM, AV1), HLS, DASH.

    Consultar fonte oficial
  2. Technical documentationCurrentMDN Web Docs · Mozilla

    WebCodecs API

    Modern browser API for video and audio encode/decode directly in the browser—foundation for tools processing media locally.

    Consultar fonte oficial
  3. International standardsH.264/H.265/H.266ITU-T · International Telecommunication Union

    Video Codec Standards

    Video coding technical standards (H.264 AVC, H.265 HEVC, H.266 VVC) used in streaming, broadcast, and digital files.

    Consultar fonte oficial

Metodologia — esta ferramenta consulta as tabelas e legislação vigentes nas fontes acima. As regras são atualizadas conforme novas instruções normativas são publicadas pelos órgãos competentes.

Última verificação editorial: junho de 2026.

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