About Web ToolBox

Web ToolBox is a collection of more than 70 online tools for web development and programming.
If you have a browser, you can use it on desktop or mobile right away.

It's free to use and doesn't require an account.
Each tool also comes with a short guide so it's easy to pick up, whether you're just getting started or have been building for years.

Many of the tools run entirely in the browser, so the data you enter is not sent to a server.
Even for tools that require server-side processing, traffic is encrypted in transit and the data is not stored.

I'm building it piece by piece as a set of tools I'd want to use in my own day-to-day work.

Why I Made It

There are already plenty of similar tool sites, but while using them myself I often ran into things that made me think, "This would be much nicer if it worked a little differently."

For example:

Security concerns when a site doesn't support HTTPS
Difficult to use on smartphones
Lots of features, but slow to respond
Interfaces that feel dated and awkward to use

I figured I wasn't the only one running into those frustrations, so I started building small tools that I could naturally reach for in my own workflow. That gradually became Web ToolBox.
Alongside security, I care about mobile usability and aim for tools that are clear, comfortable, and pleasant to use, refining them one by one as I go.

Technology

Web ToolBox is built with Nuxt 4 and Nuxt UI.

Tech Stack Over Time

Since the initial release, I've revised the tech stack a few times.

Nuxt v2 + Vuetify v2 / AWS (S3, Lambda)
Nuxt v3 + Vuetify v3 / AWS (S3, Lambda)
Nuxt v3 + NuxtUI v3 / Cloudflare Workers
Nuxt v4 + NuxtUI v4 / Cloudflare Workers

I continue to revisit the stack when needed and improve the service step by step.

About the Developer

Web ToolBox is designed, built, and maintained by K (@k_urtica).
I'm an engineer based in Tokyo, and my main work is front-end development with Vue.
I have also spent a long time working with backend technologies such as C and Java.

You can find more details on my personal website.

If you have feedback or suggestions about Web ToolBox, please send them through the feedback form. I often revisit the tools based on feedback I receive, so every note really helps.