DevelopK.kr
All Over Tools
What Is My Tools
A Lot of Tools
What is My IP Address
BrowserLeaks.com
IPWhois.net
DevPicker
CodeUtil.dev
CodifyFormatter.org
DevToys
DuskTools.app
Text-Utils JSON Formatter
CyberChef
150+ Developer Tools
CodersTool
Free online developer utilities โ network, security, coding & text tools. No install, no sign-up; nothing you enter is sent to a server.
์ค์นยทํ์๊ฐ์ ์์ด ๋ธ๋ผ์ฐ์ ์์ ๋ฐ๋ก ์ฐ๋ ๋ฌด๋ฃ ๊ฐ๋ฐ์ ์ ํธ๋ฆฌํฐ ๋ชจ์ (๋คํธ์ํฌยท๋ณด์ยท์ฝ๋ฉยทํ ์คํธ 61๊ฐ ๋๊ตฌ). ์ ๋ ฅ๊ฐ ์๋ฒ ์ ์ก ์์.
CodeUtil.dev is a collection of 20+ browser-based developer tools. JSON formatter & validator, regex tester, cron expression generator, Base64 encoder/decoder, JWT debugger, URL parser, hash generator, and more. Everything runs client-side โ no data leaves your browser. No sign-up needed, just open and use.
DevelopK.kr CodeUtil.devDevelopK.kr's answer
developk.kr offers 61 free developer tools you can use instantly in your browser, no sign-up required. All processing happens client-side, so nothing you type is sent to a server. The tools are organized into 4 categories (network, security, coding, text), and 15 written guides are included to help you use them.
CodeUtil.dev's answer:
CodeUtil.dev runs entirely in the browser โ all processing happens on your device, so your data never touches a server. It bundles 20+ tools (JSON, regex, Base64, JWT, cron, hashing, and more) under one roof with zero sign-up. Just open the page and start working.
DevelopK.kr's answer
Developers and engineers who run into small, repetitive tasks during their workday, things like formatting JSON, generating a hash, checking DNS records, or converting units, and want a fast browser-based tool instead of hunting through ad-heavy sites. It's also popular with solo developers and freelancers who value the no-signup, privacy-friendly approach.
DevelopK.kr's answer
developk.kr started as a single indie side project: small dev tools built one at a time to solve the maker's own recurring annoyances, like reformatting a messy JSON blob or looking up DNS records, on sites full of ads and forced sign-ups. Each tool was added because it was genuinely needed for real work, and the collection has since grown to 61 tools across 4 categories, plus 15 written guides.
DevelopK.kr's answer
Most online tool sites require sign-up, run ads, or collect your email before you can use them. developk.kr skips all of that. Because everything runs client-side in your browser, it's also safe to paste sensitive values like API responses or auth tokens without worrying about where that data goes.
DevelopK.kr's answer
developk.kr is built as static HTML/CSS/JavaScript (no backend framework), with a shared common.js handling the header, footer, and ad mounting across all tool pages. It's hosted and served through Cloudflare (Pages, with redirects handled via a Cloudflare Pages Function), and uses GA4 for analytics.
All Over Tools - Clean, transform, and validate your data with our secure, browser-based tools. No logs, no tracking, just high-performance utilities.
CodifyFormatter.org - Free Online Tools like Beautify Code, Minifiy Code, Code Converter, Code Formatter, Viewer, Editor for Developer: JSON, XML, HTML, CSS, JavaScript, Java, SQL, CSV and Excel and String Tools
What Is My Tools - Free browser tools that reveal your IP address, browser, timezone, internet speed, and more. No signup โ instant results. Privacy Policy explains analytics and ads.
DevToys - A collection of converters, formaters, encoders, generators and other tools for your Windows desktop.
A Lot of Tools - 380+ free online tools โ no sign-up, in your browser.
DuskTools.app - 150+ free browser-based developer tools - no sign-up, no tracking, no backend. JSON formatter, Base64 encoder, regex tester, JWT decoder, UUID generator, HTTP status lookup, MIME types, port reference, cron builder & more. Everything runs locally in