Your Online Subtitle Tool

Select the subtitle you would like to synchronize

Supported subtitles extensions: .srt/.sub/.ssa/.ass


27/03/2018 - [NOTE] To avoid possible problems, make sure your file is encoded in UTF-8 :)

15/01/2018 - [FIXED] Incorrect time shifting when using decimals. Thanks Benjamin!

28/11/2017 - [ADDED] Filesize limit increased.

15/11/2017 - [FIXED] Carriage returns being skipped. (currently monitoring) Thanks Yvonne!

28/03/2017 - [ADDED] More format flexibility on .srt files.

01/09/2016 - [FIXED] .srt subtitles keys being unintentionally displayed.

About SubSyncer

SubSyncer is an online tool able to re-synchronize subtitles in any languages and in the most popular subtitles formats (.srt/.sub/.ssa/.ass). This is a personal project that I've finally made public so as I am always looking to improve the algorithm if you have any problems, feedbacks or suggestions please don't hesitate to send me an e-mail at