Subtitle Surgery

 Catch subtitle failures before your audience does

Subtitle Surgery inspects SRT and WebVTT files for timing collisions, reading speed, broken words, awkward line breaks, CJK line width, encoding damage, and other release-day surprises.

Everything runs locally in a single HTML file. Your unreleased dialogue and client subtitles are not uploaded to a server.

WHAT IT CATCHES

• Overlapping or reversed timestamps

• Cues that disappear too quickly or stay too long

• High Latin-word or CJK-character reading speed

• Overly long lines and too many lines

• English words split across a line break

• Punctuation stranded at the beginning of a CJK line

• Duplicate or irregular SRT cue numbers

• Suspicious encoding replacement characters

• Possible simplified/traditional Chinese mixing

WHAT SAFE REPAIR CHANGES

The repaired copy normalizes cue numbering and removes leading, trailing, and repeated spaces. Risky editorial decisions remain warnings for you to review. Your original file is never overwritten.

PRIVATE BY DESIGN

No account, upload, API key, installation, or internet connection is required after download.

LAUNCH PRICE

USD 12 — one-time purchase. Includes the Creator edition and 1.x updates.

IMPORTANT LIMITS

Subtitle Surgery is a quality-assurance aid, not a translation, accessibility certification, or guarantee of platform compliance. Always review the result in the player where it will be published.

日本語の説明

Subtitle Surgeryは、SRT／WebVTT字幕の時間重複、表示時間、読む速度、英単語の途中分断、CJK字幕の行幅や行頭句読点、字幕番号、文字化けの兆候などを診断するツールです。

処理はダウンロードした単一のHTMLファイル内で行われます。未公開の台詞やクライアント字幕をサーバーへ送信しません。

無料版：最初の20字幕を診断できます。

Creator Edition — 12米ドル：字幕数の制限なし、修正版とテキストレポートのダウンロード、今後の1.xアップデートを含みます。

本ツールは品質確認を補助するものであり、翻訳、アクセシビリティ認証、各配信プラットフォームへの準拠を保証するものではありません。公開先のプレーヤーでも必ず結果をご確認ください。Catch subtitlefailures before your audience does

Subtitle Surgery inspects SRT and WebVTT files for timing collisions, reading speed, broken words, awkward line breaks, CJK line width, encoding damage, and other release-day surprises.

Everything runs locally in a single HTML file. Your unreleased dialogue and client subtitles are not uploaded to a server.

What it catches

• Overlapping or reversed timestamps
• Cues that disappear too quickly or stay too long
• High Latin-word or CJK-character reading speed
• Overly long lines and too many lines
• English words split across a line break
• Punctuation stranded at the beginning of a CJK line
• Duplicate or irregular SRT cue numbers
• Suspicious encoding replacement characters
• Possible simplified/traditional Chinese mixing

What safe repair changes

The repaired copy normalizes cue numbering and removes leading, trailing, and repeated spaces. Risky editorial decisions remain warnings for you to review. Your original file is never overwritten.

Private by design

No account, upload, API key, installation, or internet connection is required after download. Open the file in a current browser and drop in an SRT or VTT.

Launch price

USD 12 — one-time purchase. Includes the Creator edition and 1.x updates.

Important limits

Subtitle Surgery is a quality-assurance aid, not a translation, accessibility certification, or guarantee of platform compliance. Always review the result in the player where it will be published.

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日本語の説明

Subtitle Surgeryは、SRT／WebVTT字幕の時間重複、表示時間、読む速度、英単語の途中分断、CJK字幕の行幅や行頭句読点、字幕番号、文字化けの兆候などを診断するツールです。

処理はダウンロードした単一のHTMLファイル内で行われます。未公開の台詞やクライアント字幕をサーバーへ送信しません。

無料版とCreator版

• Free Check：最初の20字幕を診断できます。
• Creator Edition — 12米ドル：字幕数の制限なし、修正版とテキストレポートのダウンロード、今後の1.xアップデートを含みます。

本ツールは品質確認を補助するものであり、翻訳、アクセシビリティ認証、各配信プラットフォームへの準拠を保証するものではありません。公開先のプレーヤーでも必ず結果をご確認ください。