Free Subtitle Tools

Small, focused subtitle utilities that run 100% in your browser — nothing is uploaded. These handle the quick one-off jobs. When you need to generate subtitles from speech, extract hardcoded subtitles via OCR, translate, or burn subtitles into video in batch, that's what the GeekLink desktop app is for.

Split

Bilingual (Chinese-English) SplitterSplit a Chinese + English SRT into separate SRT or TXT files. Japanese-English SplitterSplit a Japanese + English SRT into separate files. Korean-English SplitterSplit a Korean + English SRT into separate files.

Convert

SRT ↔ VTT Converter + ShiftConvert between SRT and VTT, and shift all timestamps by an offset.

Sync

Subtitle FPS ConverterRescale timing for a frame-rate change (e.g. 23.976 ↔ 25 fps).

Fix

Subtitle Encoding FixerDetect the real encoding of a garbled subtitle and re-save as UTF-8. Subtitle Encoding DetectorDetect a subtitle file's real character encoding (read-only).

QC

Subtitle CPS (Reading Speed) CheckerFlag subtitles that are too fast to read (characters per second). Subtitle Duration & Overlap CheckerFlag cues that are too short, too long, overlapping, or too close.

Other

Subtitle Stats (Word / Character Count)Count cues, lines, words, characters, and duration — handy for quotes. Video + Subtitle Preview PlayerPlay a local video with an SRT/VTT subtitle to check timing. No upload.

Need the full workflow?

GeekLink transcribes with AI speech recognition, extracts hardcoded subtitles via OCR, translates into 40+ languages, and burns subtitles into video — batch-processing dozens of videos locally on Mac or Windows.

Try GeekLink Free