Question 1

Does checking my subtitle file upload it anywhere?

Accepted Answer

No. The checker runs entirely in your browser. Your subtitle file never leaves your device.

Question 2

What subtitle formats are supported?

Accepted Answer

SRT and VTT files up to 2 MB.

Question 3

Does fixing line breaks change my timestamps?

Accepted Answer

No. The free repair only changes where line breaks appear within a subtitle line. Start times, end times, and display text are unchanged.

Question 4

When do I need the paid Script + Audio workflow?

Accepted Answer

When the subtitle timing itself is wrong. If subtitle boundaries don't match the speaker's pauses, re-aligning from script and audio is the only reliable fix. The free checker repairs formatting only.

Check SRT/VTT subtitles

Drop in a subtitle file