無料ツール
無料字幕ツール
ブラウザ内の変換、チェック、ドラフト作成に加え、ログイン後の字幕生成を開始できます。
掲載されているツールはローカル実行です。アップロード、プロバイダー呼び出し、YouTube URL、音声/動画処理は行いません。
字幕ファイルを変換
subtitle converter
Converts existing SRT/VTT subtitle files and extracts TXT in the browser.
ツールを開くsrt to vtt
Preserves subtitle line count, timestamps, and displayed text while converting SRT to VTT.
ツールを開くvtt to srt
Preserves subtitle line count, timestamps, and displayed text while converting VTT to SRT.
ツールを開くsrt to txt
Extracts subtitle text and removes timing; TXT output is not a subtitle file.
ツールを開くvtt to txt
Extracts subtitle text and removes timing; TXT output is not a subtitle file.
ツールを開くtxt to srt
Creates an editable SRT draft with estimated timing. Accurate synchronization requires the matching spoken audio.
ツールを開くsrt to ass
Generates a basic ASS skeleton from SRT timing and text.
ツールを開くass to srt
Keeps text and timing; advanced ASS styling, fonts, positioning, and effects may be removed.
ツールを開くcsv to srt
Uses one fixed CSV template and provides SRT to CSV only as a companion mode.
ツールを開くsmi to srt
Derives each end time from the next SAMI SYNC marker and keeps one language track per conversion.
ツールを開くチェックと調整
subtitle checker
Checks SRT/VTT structure and readability in the browser without retiming from audio.
ツールを開くsrt time shift
Shifts every SRT/VTT cue by one user-provided offset in the browser; it does not inspect media or repair cue-level drift.
ツールを開くdubbing pacing checker
Analyzes translated subtitle pacing in the browser; it does not generate audio or dubbing.
ツールを開く結合と分割
字幕を生成
スクリプト+音声の生成にはログインが必要で、自分のファイルを使います。音声、動画、MP4 ツールには、短い所有ファイル向けの登録不要トライアルもあります。
Script to Subtitles
Creates accurate subtitle assets from a script and matching owned audio with entitlement checks.
ツールを開くaudio to srt
Accepts owned audio files only; long files, batch work, and precise alignment route to paid plans.
ツールを開くvideo to srt
Accepts owned video files only; it does not download remote videos.
ツールを開くmp4 to srt
Uses the owned-video generation runtime for MP4 files; it does not download remote videos.
ツールを開く