Free tools
Free subtitle tools
Convert, check, draft, or start authenticated subtitle generation.
Listed tools run locally. They do not upload files, call providers, accept YouTube URLs, or process audio/video.
Convert subtitle files
subtitle converter
Converts existing SRT/VTT subtitle files and extracts TXT in the browser.
Open toolsrt to vtt
Preserves subtitle line count, timestamps, and displayed text while converting SRT to VTT.
Open toolvtt to srt
Preserves subtitle line count, timestamps, and displayed text while converting VTT to SRT.
Open toolsrt to txt
Extracts subtitle text and removes timing; TXT output is not a subtitle file.
Open toolvtt to txt
Extracts subtitle text and removes timing; TXT output is not a subtitle file.
Open tooltxt to srt
Creates an editable SRT draft with estimated timing. Accurate synchronization requires the matching spoken audio.
Open toolsrt to ass
Generates a basic ASS skeleton from SRT timing and text.
Open toolass to srt
Keeps text and timing; advanced ASS styling, fonts, positioning, and effects may be removed.
Open toolcsv to srt
Uses one fixed CSV template and provides SRT to CSV only as a companion mode.
Open toolsmi to srt
Derives each end time from the next SAMI SYNC marker and keeps one language track per conversion.
Open toolCheck and adjust
subtitle checker
Checks SRT/VTT structure and readability in the browser without retiming from audio.
Open toolsrt time shift
Shifts every SRT/VTT cue by one user-provided offset in the browser; it does not inspect media or repair cue-level drift.
Open tooldubbing pacing checker
Analyzes translated subtitle pacing in the browser; it does not generate audio or dubbing.
Open toolCombine and split
Generate subtitles
Script + Audio generation requires sign-in and uses your own files. Audio, video, and MP4 tools also offer a no-sign-up short trial for owned files.
Script to Subtitles
Creates accurate subtitle assets from a script and matching owned audio with entitlement checks.
Open toolaudio to srt
Accepts owned audio files only; long files, batch work, and precise alignment route to paid plans.
Open toolvideo to srt
Accepts owned video files only; it does not download remote videos.
Open toolmp4 to srt
Uses the owned-video generation runtime for MP4 files; it does not download remote videos.
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