Check subtitle files for timing and readability errors, convert between SRT and WebVTT, shift out-of-sync timings, and rebuild subtitles from a translation.
1
00:00:01,000 --> 00:00:03,200
Welcome to the product tour.
2
00:00:03,400 --> 00:00:06,000
Let's start with your dashboard,
where every project lives.
3
00:00:05,800 --> 00:00:07,000
Click "New project" to add a website and choose the languages you want to translate into.
/ Altified
Altified translates your website and product pages into every language your viewers speak.
1 → 00:00:01,000 --> 00:00:03,200 → Welcome to the product tour. Each block repeats that pattern: the cue number, the timing line, up to two lines of text, and a blank line before the next cue. Save the file as UTF-8 so accented characters display correctly.
Translated subtitles grow longer, so a cue that fits in English can be too fast to read in German or Spanish. Validate each translated file for line length and reading speed before you publish it.
/ FAQ
SRT (SubRip Subtitle) is a plain-text subtitle format. Each cue has a number, a start and end time, and one or two lines of text, with a blank line between cues. Almost every video player and platform accepts it.
Each cue is a number, then a timing line such as 00:00:01,000 --> 00:00:03,500 (hours:minutes:seconds,milliseconds), then the subtitle text, then a blank line. SRT uses a comma before the milliseconds.
WebVTT is the format HTML5 video uses. It starts with a WEBVTT header, uses a period before milliseconds, and supports positioning and styling. SRT is simpler and more widely supported by editing software.
Broken numbering and timing lines, cues that end before they start, overlapping cues, lines over 42 characters, more than two lines, cues shorter than 0.83 seconds or longer than 7 seconds, and reading speeds over 20 characters per second.
Enter the delay in seconds under Shift all timings. Use a positive number if subtitles appear too early and a negative number if they appear too late, then download the corrected file.
Copy the Text to translate tab, which has one paragraph per cue, translate it, and paste the translation into Rebuild a translated subtitle file. The original timings are applied to the translated text.