Subtitles
Subtitle Converter
Convert and clean subtitle files directly in your browser. Runs locally — nothing is sent to a server.
Optics
DOF Calculator
For photographers and filmmakers who want to quickly evaluate depth of field while shooting or planning,
without relying on external services. The tool runs entirely in your browser, works offline, and never sends
any data online.
This Depth of Field (DOF) calculator helps you understand how aperture, focal length,
focus distance, and sensor size together affect depth of field and framing.
Privacy
Image Metadata Stripper
Remove all metadata — re-encodes via canvas (removes EXIF/XMP/IPTC). Fast and thorough.
Audio
Audio Metadata Stripper
Strip metadata from MP3 and WAV files and optionally write clean new tags (title, artist, album, year, comment). Everything runs locally in your browser — ideal for privacy-friendly audio delivery.