Browser-Based File Tools Already Exist. So Why Am I Building Another One?

There are already plenty of tools that let you compress PDFs, resize images, convert files, and do all sorts of things directly in your browser. Some of them even process everything locally, without uploading your files.

So when I started building FormatGrid, one question kept coming to mind: why build another one?

I’m not going to claim that local file processing is something new. It isn’t. There are already good tools out there, and many developers have done impressive work in this space.

But while using different tools, I kept thinking about the overall experience. You find one website for a PDF task, another for an image, and something else when you need to create a document. Each tool might do its job well, but the experience often feels disconnected.

I wanted to try building something that brings these everyday tasks together in one place, with a consistent experience and privacy as part of the way it works.

That idea became FormatGrid.

It’s a collection of PDF, image, audio, and document tools designed to process files directly in the browser. The goal is to make common tasks simple, avoid unnecessary uploads and accounts, and build workflows that feel useful rather than just adding more tools to a list.

The interesting part is that building this is not just about creating a web interface. For some of the processing, I’ve been working with C++ and WebAssembly. That brings its own challenges: memory usage with large files, browser limitations, keeping the interface responsive, and making sure things don’t fall apart when a file behaves unexpectedly.

I’ve learned that getting something to work once is only the beginning. Making it reliable across different files and devices is a much bigger challenge.

I’m still working on FormatGrid, and I know there’s a lot left to improve. I’m not trying to build the first browser-based file tool. I’m trying to build something useful, learn from the process, and see whether a better overall experience makes a difference.

For developers who have built products in crowded categories: how did you decide what was worth improving when existing solutions were already available? I’d love to hear what helped you find your own direction.