dark shell / static routes / handwritten docs
Fast converters and useful tools under one goppy shell.
The /uc/ hub keeps common conversions, practical calculators, browser-local file tools, and quick utility workflows in one place. It is built for speed, deep links, and repeat use instead of ad-heavy clutter.
Choose the utility lane that fits the job.
Converters
Measurement, sizing, and live-rate tools for day-to-day work. This lane includes the baseline converter set plus extra families like frequency, fuel economy, conductivity, and flow.
Math
Geometry and formula calculators for the common shapes and classroom staples that people actually reach for.
Text
Transform strings, clean lines, generate hashes, and reshape pasted text without leaving the browser.
Other
A practical lane for date, finance, health, time, and network helpers that do not fit cleanly into the other families.
Files & Images
Browser-local file inspection, compression, and image editing helpers for quick one-off jobs.
Currency
Daily official-source FX conversion with the returned rate date shown clearly every time.
Start with the routes people usually need first.
Length converter
Length converter keeps the common length units in one fast panel with direct deep links and precision control.
Weight / mass
Weight / mass keeps the common weight units in one fast panel with direct deep links and precision control.
Temperature converter
Temperature converter keeps the common temperature units in one fast panel with direct deep links and precision control.
Currency converter
Currency converter uses daily reference rates from Frankfurter and shows the returned rate date alongside every result.
Percentage calculator
Percentage calculator covers the four percentage jobs people hit most often: finding a portion, reverse-solving the base number, comparing values, and measuring percent change.
Base64 tool
Base64 tool supports both encoding and decoding for quick transport-safe text conversions.
Timestamp to date
Timestamp to date converts Unix seconds or milliseconds into readable local and UTC times.
Resize image
Resize image scales an uploaded image to a new width and height while keeping the work in-browser.