CC Tool collection

Subtitle & Creator Tools

Convert, repair, analyze and prepare subtitles, captions, chapters and social video assets.

21 tools

SRT to VTT Converter Convert SubRip subtitles to WebVTT in your browser.

VTT to SRT Converter Convert WebVTT captions to numbered SRT subtitles.

Subtitle Time Shifter Move every SRT or VTT timestamp forward or backward.

Subtitle Encoding Fixer Convert garbled SRT and VTT files to UTF-8.

SRT Renumber and Repair Tool Renumber cues and clean common SRT block formatting errors.

Subtitle Word and Reading Speed Counter Count cues, words, characters, duration and reading speed.

Subtitle Line Break Fixer Wrap and balance long subtitle lines without changing timestamps.

Subtitle Reading Speed Checker Measure words per minute for every subtitle cue.

Subtitle CPS Calculator Calculate characters per second and flag dense captions.

Subtitle Duration Calculator Measure cue duration, gaps, overlaps and total subtitle coverage.

Subtitle Case Converter Change subtitle text case while preserving timestamps and tags.

Remove Hearing-Impaired Captions Remove sound descriptions, speaker labels and music symbols.

Merge Two Subtitle Files Combine two SRT or VTT files into one ordered subtitle track.

Split Subtitle File Split SRT or VTT subtitles by cue count, duration or equal parts.

Subtitle Translator Template Export Export subtitle cues to CSV, TSV or JSON translation templates.

YouTube Chapter Generator Build chapter timestamps from titles and segment durations.

YouTube Timestamp Formatter Normalize mixed timestamp lists for descriptions and comments.

Video Aspect Ratio Calculator Calculate ratios, scaled dimensions, crop and letterbox sizes.

Social Video Safe-Zone Preview Preview text and UI safe zones over a local image.

Online Teleprompter Run a mirrored, adjustable browser teleprompter.

Caption Background Generator Create downloadable caption cards and text backgrounds.

Private local processing

These tools use browser APIs to process user-selected files, create documents or calculate measurements on the device. There is no remote processing API in this project.

Practical browser compatibility

Modern browsers support local file access, SVG and Canvas generation, downloads and interactive calculations. Test uncommon formats in the browsers used by your audience.