Komariscope

Split bill calculations, era conversions, SQL IN clause creation, JWT content verification — a portal site bundling 50 small tools for tasks that are "not worth installing a dedicated app for, but a bit tedious each time."

No installation required · No login required · No ads. Ready to use the moment you open your browser.

3 Promises

Calculations, conversions, image generation — all handled by JavaScript running in your browser. Since there's no mechanism to send input to a server for processing, you never have to wonder "is it safe to send this content?"

Switch between 2 modes to use

Komariscope lets you switch between general mode (for everyday life) and developer mode (for developers) using a toggle in the top right of the screen. The tools displayed, explanation text style, and color scheme change depending on the mode.

General Mode — A gentle screen in white and blue

20 everyday tools are displayed. A bright screen with white and pale blue as the base colors, with cards in a 3-column grid. Explanations avoid technical jargon, so you understand "when to use it" rather than "what it does."

The top of the screen always displays the 3 points: "No installation required / No login required / No data transmission," so first-time visitors can input with confidence.

Developer Mode — Dark theme with category sidebar

31 developer-focused tools are displayed. The color scheme switches to a dark theme with a black base, and a category sidebar appears on the left (Database / Text Formatting / Development Support / Generation & Comparison / Network). When working across multiple tools, you can navigate without returning to the top page.

The sidebar becomes a drawer menu from a hamburger icon when the screen width is narrow.

When searching, find from all 50 across modes

When you enter a word in the search field, it searches from all 50 tools regardless of which mode you're currently in. If you search for "conversion" in developer mode, era conversion appears too; if you search in general mode, SQL tools also appear with DEV badges. This design prevents you from getting lost wondering "which mode is this in?"

Navigate with keyboard only — Cmd + K / Ctrl + K

From any page, Cmd + K (Ctrl + K on Windows) opens the quick search palette. Select with ↑↓, move with Enter, close with Esc. When working across multiple tools, you can do it without using the mouse.

Frequently used tools stay within reach

You can pin tools using the star icon on cards. Pinned tools and recently used tools appear as shortcuts just below the search field on the top page.