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A small workshop of privacy-first, browser-only tools, including an AI writing assistant that never leaves your device.
Nepvibe is a personal workshop of small, focused tools: a JSON formatter, a string formatter, an OCR extractor, a browser SQL lab, and now an AI writing assistant. Every tool here shares the same principle. Your data stays on your device. Nothing you paste, upload, or type is ever sent to a server, and everything runs right in your browser.
The writing assistant runs two open models directly in the browser via Hugging Face's transformers.js: grammar-synthesis-small for grammar fixes and LaMini-Flan-T5-248M for tone and clarity rewrites. Each is cached in your browser after the first download and reused from there.
Fix grammar or rewrite for tone and clarity. It's powered by a small AI model that runs fully on your device.
Rewrites and fixes your text entirely on your device using WebAssembly (or your GPU via WebGPU, if available). The only network activity is a one-time download of the AI engine and model from a CDN, cached in your browser afterward. Nothing you type is ever uploaded. Works best on desktop; may run slow on some phones.
More small utilities that run entirely in your browser. Nothing you use here is ever uploaded.
Paste JSON, get pretty-printed or minified output with syntax highlighting, instantly.
Turn a list of lines into quoted, joined, deduplicated, sorted code-ready arrays.
Pull text out of a photo or PDF entirely on-device, with no upload and automatic language fallback.
Drop in CSV, JSON, XLSX, or Parquet files, or fetch data from an API, and query it with real SQL, all on-device.