
Best Programming Toolkit
tooltool.net
FreeFormatter
JSONLint
All Over Tools
JSONFormatter.org
JSON Formatter & Validator
Online JSON Tools
DevelopK.kr
All Over Tools
What Is My Tools
A Lot of Tools
What is My IP Address
BrowserLeaks.com
IPWhois.net
DevPicker
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 ์์.
Best Programming Toolkit
DevelopK.krDevelopK.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.
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.
tooltool.net - Online toolkit designed for software engineers and developers, including JSON parsing, Base64 encoding/decoding, MD5 encryption, URL encoding/decoding, timestamp conversion, UUID generation and other practical tools.
All Over Tools - Clean, transform, and validate your data with our secure, browser-based tools. No logs, no tracking, just high-performance utilities.
FreeFormatter - Freeformatter is a platform that contains free online tools for developers, including formatters (json, html, xml, sql, etc.), minifiers (css, javascript), compactors, validators, and much more.
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.
JSONLint - JSON Lint is a web based validator and reformatter for JSON, a lightweight data-interchange format.
A Lot of Tools - 380+ free online tools โ no sign-up, in your browser.