92+ free, browser-based developer tools. No sign-up. No uploads. 100% private.
Hi, I'm a developer just like you. I built UtilToolkits because I was tired of searching for simple tools — like a JSON formatter or an image compressor — only to land on sites buried in ads, requiring logins, or uploading my private data to a server just to process a few bytes.
I realized that 99% of these tasks can be done instantly, right in the browser, without ever touching a server. So I started this as a hobby project to collect all those free coding tools and online utilities in one clean, fast, and private place.
Every tool on this site is a browser-based utility — your data never leaves your machine. Whether you're formatting JSON, compressing images, generating CSS, converting text, or calculating a hash, all processing happens locally using standard Web APIs.
UtilToolkits covers the full range of everyday developer and designer needs:
Browse all 92+ tools on the Tools page, or explore curated collections by workflow.
The goal is to keep adding free online developer tools to cover every possible need. If you need a specific converter, generator, or calculator that doesn't exist here yet, let me know — I build what you ask for.
Yes, completely. No account, no credit card, no free-tier ceiling. Every tool is free without limit.
No. All processing happens in your browser. The text, images, code, and files you work with never leave your device.
Most tools work offline once the page has loaded, since all logic runs client-side.
Probably because no one has asked for it yet. Visit the Request a Tool page and I'll add it to the backlog.
Whether you're debugging a JWT, optimizing assets, or just crunching numbers, I hope these tools save you a few minutes of frustration today.
💡 Missing a tool? Visit the Request a Tool page. I read every suggestion!