SimonOS Utility Launchpad

Useful tools, ready at boot.

A calm browser toolbox with a retro SimonOS shell. Convert, clean, measure, and process everyday files without accounts, popups, or maze-like dashboards.

12

Live utilities

6

Active families

6

Tracked signals

Time & Date

Timestamps, timezones, scheduling, and date debugging.

Converters

Fast unit conversions and everyday format helpers.

Text & Code

Case conversion, slugs, labels, and code-friendly text.

Image

Local resize and export flows for everyday image cleanup.

PDF Tools

Private file workflows for merging and preparing documents.

Document Tools

Printable exports and text extraction for practical document work.

Live Now

The tools that are already booted.

12 featured tools

Timestamp Converter

Convert Unix timestamps, ISO strings, and readable dates without guessing which format you are looking at.

Timezone Converter

Translate one meeting time across cities and named time zones with quick previews for the places you care about.

Length Converter

Switch between metric and imperial length units instantly, with quick swaps and practical equivalents.

Base64 Converter

Encode and decode UTF-8 text as Base64 for payloads, tokens, and debugging.

Text Case Converter

Flip text between sentence case, title case, uppercase, lowercase, slugs, and developer-friendly identifiers.

Format, validate, minify, and sort JSON payloads for APIs, configs, and logs.

Generate one or many random UUID v4 identifiers for fixtures and records.

Resize PNG, JPEG, and WebP images locally in the browser with aspect-ratio locking and quick export formats.

Combine multiple PDF files locally in the browser with explicit ordering.

Optimize a PDF locally by rebuilding page data and reporting the actual byte savings.

Markdown to PDF

Turn markdown notes into a local, printable PDF with headings, lists, quotes, and code blocks.

Extract selectable text from PNG, JPEG, and WebP scans or screenshots in the browser.

Next Up

Build queue for the 500-tool system.

Client-side first No signup flow Tools over dashboards Retro shell, calm workflow

Queue clear

The first document-tool wave is live.

Pick the next utility family when it is time to expand beyond converters, image tools, PDFs, and document extraction.

Feedback Loop

Help choose the next utility.

Request a tool, report a broken edge case, or point out a workflow that should feel faster. The best suggestions become the next small browser tools.

Request Tool Report Issue