ToolsBox
All Your Digital Tools in One Box
About
toolsbox.io is a free collection of browser tools for everyday tasks. Whether you need to convert a PDF, resize an image, format some code, clean up messy text, or quickly generate a QR code - it's all in one place. No sign up, no installs, just open the tool and go.
It started as a handful of utilities and has grown to 688+ tools across 11 categories, with more being added regularly. The idea is simple: stop jumping between random websites every time you need to do something small. toolsbox.io keeps everything in one spot so you can get things done faster.
It's built for developers, students, creators, and really anyone who deals with files, text, or code on a regular basis. If you've ever wasted time hunting for a quick online tool, this is the site you probably wished existed sooner.
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FounderPlaybooks.
What other founders did to grow.
2722 dispatches from hundreds of founders, pulled from the week's best podcasts.
I'd been building a lot for Emma which is this archetype that I had in my head who's my little sister. She was entering college as a first year civil engineering major and we were thinking a lot about how can we summarize things help people learn.
Build for one real person — Zack's sister Emma, civil engineering major
Zack grounded every product decision in a single concrete person: his sister Emma starting civil engineering. Building for one real human instead of a fuzzy demographic sharpens every trade-off, especially when you can text her after a release and ask what she thinks.
The Core Technology Fee is the only fee that you pay. Inside those marketplaces you can use any payment provider you want, you don't pay Apple any commission, you don't pay Apple any billing fee — the only thing you pay Apple in these marketplaces is the core technology fee.
Third-party marketplaces flip the math — only CTF, no commission, no billing fee
Distribute through a third-party marketplace and Apple takes zero commission and zero billing fee — only the €0.50 CTF per install. The economics get interesting for high-LTV or paid-upfront apps that can absorb the per-install cost without freeloader exposure.
There's a play for whatever you're stuck on.
Read all 2722 playbooks
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