SubLime Captions

What SubLime Captions is

SubLime Captions is a web-based AI editor and translator for subtitle files in .srt, .vtt and .ass formats. Its proofreading feature can identify and correct spelling, punctuation and grammar issues. Users can give instructions in natural language to change tone, summarize content or adjust localization. Filters can remove filler words, stutters and profanity, and change punctuation. For translation, SubLime says it considers surrounding captions, terminology and style preferences. It also reads the full subtitle file to follow ongoing dialogue and tone. Listed translation languages include Chinese, English, Japanese, Korean, French and Spanish. The service says subtitle files are processed rather than stored permanently, and wiped when the session closes; it also says subtitle data is not used to train AI models. The free plan costs nothing. Its daily AI allowance is an estimate, not a fixed character limit: typical proofreading is estimated at roughly 15,000–80,000 subtitle characters, with the amount varying by language, task, context length and complexity. Users on the same public IP share the allowance, which resets daily at 00:00 UTC.

Who it suits

SubLime Captions suits people who edit or translate subtitle files and want proofreading, text adjustments or filters in a browser. The shared daily allowance may suit users whose needs fit its variable estimate.

Limits

The Free plan has a daily AI allowance estimated at roughly 15,000–80,000 subtitle characters for typical proofreading. It varies by language, task, context length, and complexity, is shared among users on the same public IP, and resets daily at 00:00 UTC.

Getting started

1. Open the SubLime Captions website.
2. Prepare a subtitle file in .srt, .vtt, or .ass format.
3. Use proofreading, translation, filters, or natural-language instructions to edit the subtitles.

Verdict

SubLime Captions brings subtitle proofreading, editing and translation together in a web tool with a free plan. Consider the shared and variable daily allowance when deciding whether it fits your workload.