About Devkit

What Devkit is

Devkit is a small, focused collection of everyday developer tools — a string length counter, a JSON formatter, a Base64 encoder and decoder, a JWT decoder and verifier, a SQL formatter and an XML formatter. Each one does a single job well, loads instantly and requires no account, no installation and no configuration. It is free to use and always will be.

The guiding idea is simple: the small utilities developers reach for many times a day should be fast, private and pleasant to use. Too many online tools bury a one-line function under pop-ups, sign-up walls and trackers. Devkit strips that away and leaves just the tool and a clear explanation of what it does.

Privacy by design

Every tool on Devkit runs entirely in your browser. When you paste a JSON blob, a token or a SQL query, that text is processed on your own device using JavaScript — it is never uploaded to a server, stored or logged. This is not a promise we ask you to take on trust: because the tools are client-side, there is simply no server for your input to travel to. That makes Devkit safe to use even with sensitive data like production tokens or internal queries.

How it works

Devkit is a static website. Every page is pre-rendered to plain HTML at build time and then enhanced with a small amount of JavaScript, so pages load quickly and work well even on modest connections. The interface is available in thirteen languages, follows your system's light or dark theme, and lays out correctly for right-to-left languages such as Hebrew and Arabic.

The tool logic is deliberately kept simple and well-tested, and the explanations on each tool page are written to be genuinely useful — not just filler — so you can understand the concept behind a tool, not only push a button.

How Devkit is funded

Running a website has real costs. To keep Devkit free, some pages display advertising. Ads never change the privacy model described above: the text you type into a tool is still processed only on your device and is never shared with advertisers. Details of how advertising and cookies work are set out in the privacy policy, which is linked in the footer of every page.

Feedback is welcome

Devkit is actively maintained and new tools are added over time. If you have found a bug, have an idea for a tool, or just want to say hello, the Contact page has a direct email address — real feedback from people who use the tools shapes what gets built next.