I built 16 free browser-based tools so I'd stop opening 16 different websites

Description and use

A single, client‑side web app consolidates 16 developer utilities, eliminating the need to open multiple sites, protecting user data, and improving workflow efficiency.

Problem

Developers repeatedly open multiple sites to perform simple text and data manipulation tasks, wasting time and exposing data to ads and third‑party servers.

Outcome

Consolidated 16 independent developer utilities into a single, fast‑loading, client‑side web app that protects user privacy and streamlines workflow.

Workflow

• 1. Visit collatekit.com
• 2. Select desired tool from the menu
• 3. Paste or type input data
• 4. View real‑time output or results
• 5. Copy or export results as needed

Evidence

Nothing you paste gets sent anywhere. Your JSON, your regex, your text — it's processed in your browser and never touches a server.

Source

Astro's island architecture turned out to be a good fit for "16 independent tools" — each one only loads the JS it needs, so the JSON formatter isn't shipping code for the color converter.

Source