What small browser tools do you use almost every day?

I’m building ToolsFam as a privacy-first toolbox for everyday browser tasks — things like formatting JSON, cleaning text, converting files, working with PDFs, generating QR codes, testing code, and quick developer utilities.

Most tool sites either feel cluttered, slow, or ask users to upload files unnecessarily. I want ToolsFam to feel fast, simple, and trustworthy.

I’d love to know: what small browser tools do you use regularly, and what frustrates you about existing tool websites?