Manic Inventor - Privacy-First Practical Web Tools

Practical Tools<br>Experiments Lab

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Most Popular Tools

The Secure Vault

Seal passwords and secrets for safe sharing over Slack or Teams. RSA-encrypted, audit-ready, and 100% private.

Expense Splitter Matrix

The privacy-first way to split group bills and trip costs. Features a visual matrix for row-by-row exclusions and automated settlement plans.

Studio Clock

A stateless, privacy-first time tracker for professional inventors. Sync hours to your local disk with zero data transmission.

BlobCalc

Stateless calculation engine. No tracking, no ads, pure logic.

JSON Formatter & Validator

Format, minify, and validate JSON instantly in the browser. Clean, readable, and 100% local.

Regex Tester

Test and debug regular expressions instantly with live highlighting — fast, free, and offline.

All Tools

Glassmorphism Lab

Experiment with glass blur, opacity, tint, and borders in real-time and generate CSS for your modern UI designs.

Text Case Converter

Convert text between uppercase, lowercase, title case, and sentence case in a click.

Word & Character Counter

Count words, characters, sentences, and paragraphs in a click.

Timestamp Converter

Convert Unix timestamps to human-readable dates and vice versa — quick and local.

URL Encoder & Decoder

Encode or decode URLs safely, instantly, and without leaving your browser.

Base64 Encoder & Decoder

Convert text or small files to and from Base64 locally and securely.

CSS Box Shadow Generator

Create and preview CSS box shadows with live visual feedback — fast and offline.

Color Format Converter

Convert colors between HEX, RGB, and HSL instantly and locally.

Text Diff Checker

Compare two blocks of text and highlight the differences — quick and easy.

Markdown Previewer

Type Markdown and see a live preview instantly — no backend required.

Unit Converter

Convert between common units like length, weight, volume, and temperature.

Color Palette Generator

Generate harmonious color palettes for design projects with live previews.

JSON to CSV Converter

Convert JSON data to CSV format for spreadsheets quickly and easily.

Text Replacer

Search and replace text or patterns in bulk quickly and safely.

HTML Entity Encoder/Decoder

Encode or decode special characters for safe use in HTML documents.

Text to Speech

Convert text into spoken audio using your browser's built-in capabilities.

Modal Dialog Designer

Design modal dialogs visually with live preview and CSS export.

English Domain Name Generator

Generate pronounceable, brandable English domain names using phonetic theory.

HTML Tester Tool

Type or paste HTML code and see it rendered instantly in a live preview.

Barely There UI Lab

Experiment with minimal UI elements, subtle depth, and typography.

Table based LLM Prompt Builder

Build and combine structured prompt snippets with ease. Save and reuse instantly.

Advanced LLM Prompt Workflow Builder

Create, chain, and customize multi-step LLM prompts and export workflows.

To-Do List

Create and manage a personal to-do (todo) list that saves your tasks in the browser (todo).

Pomodoro / Focus Timer

Boost productivity with timed focus and break intervals.

Daily Journal / Notes

Write and save notes or journal entries locally in your browser.

Countdown / Event Timer

Set a date to see a live countdown to your event.

Simple Calculator

Perform calculations quickly and keep a history of results.

Image to Data URI

Convert images to Base64 strings for CSS, HTML, or JSON. Drag, drop, and copy—all 100% local.

JSON to TypeScript Interface

Instantly generate clean, nested TypeScript interfaces from JSON data. Essential for developers, processed 100% locally.

AI Prompt Builder

Stop staring at a blank cursor. Build high-quality AI prompts using professional building blocks for better results from ChatGPT and Claude.

Quick Brain Dump

The fastest way to capture a thought. A distraction-free scratchpad that auto-saves to your browser and never leaves your computer.

Data Sanitizer & List Cleaner

The ultimate "un-formatter." Strip bullets, remove duplicates, and convert messy lists into CSV or SQL formats instantly.

QR Code Generator

Generate high-density QR codes for URLs, text, WiFi, or phone numbers—100% stateless and local.

Glassmorphism Generator

Design modern frosted glass UI effects with real-time CSS backdrop-filter previews.

Active Experiments

Unstable, cutting-edge, or purely theoretical projects currently in development.

DNA

Experimenting with web tech.

Vector Space

Search your thoughts by meaning, not just keywords. 100% offline and stateless

Wormhole

Peer-to-peer, end-to-end encrypted data tunnel. No servers. No limits.

Fluid Data Canvas

A node-based visual playground. Chain tools together and watch data flow.

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