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Resync SRT, VTT, or ASS Subtitles

Shift timing in whatever subtitle format you have.

Aucune connexion requiseLes fichiers restent privés

Drop a subtitle file (or paste below)

SRT, VTT, SBV, LRC, ASS, SSA, TXT aucune limite de taille de fichier

Parcourir les fichiers
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Positive delays the subtitles (use if they appear too early); negative advances them (if they lag the audio).

💡 Fixes subtitles that are out of sync — shift everything earlier or later, and correct frame-rate mismatches with the speed factor. The format is detected and preserved. Everything runs in your browser.

subtitle formats tips

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Works with SRT, WebVTT, SBV, LRC, and ASS — the format is detected and preserved on export.

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To also change format, pair this with the Subtitle Converter.

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The first-cue preview confirms the new timing before you download.

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Everything runs in your browser.

Comment ça marche

1
Choisir un fichier
Drop your file into the tool above. It stays entirely on your device — nothing is sent to any server.
2
Traiter
The tool processes your data instantly in your browser using JavaScript. No server, no waiting.
3
Télécharger
Get your result instantly. Nothing is stored after you leave the page — complete privacy.

Pourquoi utiliser le nôtre ?

Entièrement gratuit — sans coûts cachés, jamais
Aucun compte, e-mail ou connexion requis
Les fichiers ne quittent jamais votre appareil
Aucune limite de taille de fichier
Aucun filigrane sur aucun résultat

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Questions fréquemment posées