Show HN: ReadKinetic – a free, local-first speed reader for your own books

ReadKinetic is a free, browser-based speed reader that uses Rapid Serial Visual Presentation (RSVP) technology to display one word at a time, eliminating eye movement and mechanical reading inefficiencies. The tool is local-first, processing files entirely on your device without uploading data or requiring internet after initial load, and supports multiple formats including EPUB, PDF, DRM-free Kindle files, and various document types. It offers customizable reading speed and typeface, with progress saved per book locally, and includes language support for both spaced and unspaced scripts like Japanese and Thai.