BanShow ToolsBanShow 工具箱

About BanShow Tools

BanShow Tools is a small collection of utilities that do one thing unusually well: they process your files entirely inside your browser.

What that means for you

What we build

We focus on the boring, high-friction tasks people repeat every week: resizing a photo for a form, squeezing an image under 100 KB, turning a video clip into a GIF, filling a PDF without printing it, turning a signature photo into a transparent PNG.

How it works technically

The tools are plain JavaScript running on the Canvas API, WebAssembly builds of established open-source decoders (HEIC, GIF), and pdf-lib for PDFs — all of it loaded from this domain, none of it calling home.

Contact

Found a bug, or want a tool that does not exist yet? Write to contact@ban.show.