Tipsnguts is the site where Nirav Bhatt publishes free single-file browser tools and writes the Brain Bound Learning newsletter — tools that run in your browser, with no account and no upload.
Who writes it
Nirav Bhatt writes Brain Bound Learning, a publication on Substack about building, learning and shipping: industry predictions, product thinking, AI-assisted learning, linguistics and cognitive science, written for engineers, researchers and students. Tipsnguts.com is its companion site. The newsletter carries the thinking; this site carries the tools.
What is here
The Single Page Sandbox is a collection of seven browser tools — PDF Unlock, AI Writing Detector, Formula Worksheet Maker, Banner Maker, Form Maker Plus, Form Maker and QR Maker. Every one is a single HTML file. You open it and it works.
The rule they are built to
One file. No build step, no package manager, no runtime CDN — any third-party library a tool needs is vendored into the file itself. Because a tool is one self-contained document, it needs no account and no server: your text, images, CSVs and PDFs are processed inside the browser and never uploaded, because there is nowhere to upload them to. Download the file and it keeps working offline, with nothing installed.
What “free” means here
Every tool is free to use, with no account and no watermark. Downloading the standalone file asks you to subscribe to the free newsletter — and “Already a subscriber” is a button, not a paywall. The site's analytics are cookieless and record page views, not content.
The guts
Most tools have a companion post on Brain Bound Learning explaining how it was built and why it works the way it does. That is the guts half of the name: the source is the spec, and every tool is one HTML file you can read top to bottom.
Follow
Brain Bound Learning on Substack — brainboundlearning.substack.com. Tool downloads and how-they-work posts go out there first.