27 free online tools for captions and subtitles

Open an SRT or VTT file and edit the text and timing in your browser — fix typos, retime cues, add or delete lines, watch reading speed, and export a clean SRT or VTT.

Shift every timestamp in an SRT file earlier or later by a fixed number of seconds. The fastest way to fix captions that are consistently out of sync.

Combine two SRT files into one. The second file's timestamps are automatically offset to follow the first — no manual calculation needed.

Convert SRT subtitle files into WebVTT format for HTML5 video players, YouTube, and web platforms.

Convert WebVTT caption files back into SRT format for video editors, uploaders, and broadcast delivery.

Convert SRT files into ASS (Advanced SubStation Alpha) format for advanced caption styling in media players and editors.

Strip timestamps and cue numbers from an SRT file and extract the plain text transcript.

Convert SRT subtitle cues into structured JSON with start time, end time, and text fields for developers and data pipelines.

Extract plain text from WebVTT caption files, removing all timing markers and metadata.

Render an SRT file as a subtitle overlay MP4 for importing into editors that don't support direct SRT tracks.

Convert YouTube .sbv caption exports into SRT for Premiere Pro, DaVinci, Final Cut, and VLC.

Convert SRT subtitles into YouTube .sbv format to upload captions back to YouTube Studio.

Convert ASS/SSA (Aegisub, anime) subtitle files into clean SRT for editors, YouTube, and mobile players.

Upload a video, automatically add animated captions, and export a captioned MP4 — right in your browser. No install needed.

Upload an MP3 or podcast audio file and generate a timed SRT caption file. Useful for creating transcripts and captions for long-form audio content.

Sync song lyrics to audio and export a timed SRT or VTT caption file for music videos and lyric videos.

Add synced captions to Suno AI-generated songs. Upload your Suno audio and export SRT or VTT for sharing.

Upload any audio or video file and download an SRT subtitle file instantly. No account required. Also translates — pick a different output language to translate your subtitles.

AI-powered subtitle generation in 100 languages. Upload audio or video and get an SRT in seconds — or pick a different output language to translate.

Generate an SRT file ready to upload to YouTube Studio. More accurate than YouTube's built-in auto-captions across 100 languages.

Upload any video or audio file and get an accurate text transcript in seconds. Read it, copy it, or download as TXT, SRT, or VTT.

Convert any audio file — MP3, WAV, M4A and more — into an accurate, copyable text transcript in seconds.

Upload an MP3 and get the spoken words as text — copy it or download as TXT, SRT, or VTT.

Paste a YouTube link and convert the video to text — copy it or download as TXT, SRT, or VTT.

Turn audio into a timed SRT subtitle file ready for editors and YouTube — also exports VTT and text.

Translate audio or an existing SRT file into 60+ languages and download a clean translated .srt. Auto-detects source language, preserves cue timing, no account required.

Upload any audio or video file and download a clean MP3 with every silence removed. AI detects and cuts every silent gap automatically — no account required.