About ToolCaravan

Who writes and maintains this site

My name is [你的名字或笔名]. I build and maintain every tool on this site myself, and I answer every message that comes through the contact page.

Why this site exists

I work with small online sellers, which means I spend a lot of time on the boring side of the job: resizing listing photos so a marketplace will accept them, trimming images down under a file-size limit, converting formats that a platform refuses.

Every one of those tasks has a dozen websites that claim to solve it, and most of them either ask you to sign up, watermark your output, cap you at three files, or quietly upload your client's product photos to a server you know nothing about.

So I started building the small utilities I actually needed — one page each, one job each, free, and running on your own device wherever that is technically possible.

How the tools are built

Each tool is a single page. Wherever possible it runs entirely in your browser, which means your files never leave your computer and there is no server of mine that could lose them.

When a task genuinely cannot be done in the browser, the tool page says so clearly before you use it, and names the service that does the processing.

How this site is funded

Advertising. The tools are free and there is no paid tier, so display ads pay for the domain and hosting. That is the whole business model, and it is why there is no login wall anywhere on this site.

Corrections and requests

If a tool gets something wrong, or if there is a task you keep doing by hand that you wish had a one-page tool, tell me — the contact page goes straight to my inbox.