About Us

Last updated: September 1, 2026

 Minitool (mnhub.top)is a set of free, ready-to-use online utilities. We do one thing only: turning the small tasks that used to require installing software, registering accounts or uploading files into a web page you can open and use right away. 

1. Who we are

We're a small team (often just a few people doing the upkeep) building the kind of tool site you use and leave, yet keep coming back to. Our first product was Image Compress: drop in, compress, download and go — no registration, and your photos never touch any server.

2. What we do

Currently available:

Money: Mortgage Calculator, Income Tax Calculator, Pension Adjustment Calculator, Income Percentile, Amount in Words;
Office: ID Photo, PDF Tools, Word Counter, Image Compress;
Daily Life: Family Relation Calculator, Date Calculator, QR Code Generator;
Chill: Wooden Fish.

Our goal is not to build an all-in-one platform, but to make every tool simple enough — you understand how to use it the moment the page opens, no manual required.

3. Why "local-only" matters

Most online tools require you to upload files to their servers and download them back after processing. That means your contracts, ID photos, design drafts and private photos all pass through someone else's hard drive first.

We believe that risk is simply unnecessary. So every tool on this site runs entirely on your device using front-end browser technologies (HTML5 Canvas, WebAssembly, etc.) —Your data never leaves your computer or phone That's the best privacy outcome and the fastest one: no upload waits, no bandwidth cost.

4. Our principles

Privacy first

Files never go to a server, no personal data is collected, and if we can avoid doing something, we don't do it.

Free forever

Core features have no usage caps, no file-size limits and no forced sign-up.

Never larger than the original

A compressed result will never be larger than the original; files that can't be compressed further are kept as-is, with no quality loss.

No installation

Works in the browser — no plugins, no pop-ups, no forced follows.

5. How we stay afloat

Running a permanently free tool site has costs: servers, domains, bandwidth and ongoing development. We cover it through the Google AdSense ads to cover these costs.

One thing to be clear about:Advertisers see only ad slots — never your files. Since your files never leave your device, we can neither see nor hand them over. We also never sell or share data that could identify you with any third party — for details see our Privacy Policy。

If you'd like to support us, the simplest way is to share the site with anyone who might need it — that helps more than anything else.

6. Technology

This site uses a pure front-end architecture: all computation and file processing happens in your browser — in Image Compress, for example, PNGs go through smart palette quantization and JPGs simply shed redundant metadata; ID Photo, PDF processing and the calculators likewise never touch a server. The whole site is statically deployed and served through a CDN for fast access everywhere.

7. Next

We'll keep adding useful new tools and improving existing ones based on your feedback. If there's a tool you'd like, a problem you've found, or just something you want to vent about, you're welcome to reach us through Contact Us let us know.

Thanks for using our site.