04 / Tools
Tools
Small utilities — most run entirely in your browser
- 01 PDF Annotator Annotate PDFs right in the browser — add text, draw freehand, stamp a signature or image, then download. Fully client-side; your files never leave the page.
- 02 Expense Splitter Split expenses with friends and settle up — a self-hosted Splitwise. Sign in with Google, add friends as names, log expenses with equal/exact/percent/share splits, and get the minimal set of payments to square up.
- 03 Token Lens Watch a language model choose its next token. A small model runs on your device and streams the real probability of each candidate, step by step, so you can see that tokens are not words.