ext-code.com

26 Sep 2025

editors

various editors

A flexible, in-browser HTML editor that lets you build and preview pages in real time. Load content from local files, URLs, or paste directly—perfect for quick prototyping, tweaking layouts, or experimenting with markup on the fly.

can publish work and give a url for others to follow

A lightweight editor that runs entirely in your browser. Load files from local storage or external sources, make edits in real time, and save changes back with ease—no installation required.

Run JavaScript code directly in your browser with instant feedback. Includes built-in syntax checking to catch errors before they run—perfect for quick tests, debugging, or learning on the fly.

can publish work and give a url for others to follow

markdown editor

misc

miscellaneous utilities

base64 encode file

generate a hash for a file, supports md5, sha1, sha256 and many more

stackblitz

github utilities

various github utilities

download a directory from a github repository

Quickly grab the contents of any folder from a GitHub repository without cloning the whole thing. Just pick a directory and download it as a zip.

search for a file across all github repos

A simple tool for locating files across all public GitHub repositories. Enter a filename and search by plain, wildcard or regex and quickly find matching files.

google cloud utilities

various google cloud utilities

deploy cloud run service

generate token from service account keyfile

x509 utilities

generate https certificates

Build certificates for any purpose—whether it's securing domains, IPs, or creating your own mini certificate authority. Supports CA flags, path length constraints, SANs, and more. Perfect for testing, development, or spinning up a custom trust chain.

generate certificate chain

Easily create and organize X.509 certificate chains from root to leaf. Generate intermediate certificates, link, and export complete chains for use in TLS, code signing, or custom PKI setups.

certificate info

A lightweight utility that parses and displays key details from X.509 certificates. It extracts and presents fields such as subject, issuer, validity period, public key info, signature algorithm, and extensions like Subject Key Identifier and Authority Key Identifier. Ideal for developers, sysadmins, or security analysts who need to quickly inspect certificate metadata for debugging, validation, or compliance purposes.

verify certificate generate key pair extract public key sign/verify file encrypt file / text

https://emn178.github.io/online-tools/rsa/key-generator/
https://tools.keycdn.com/ssl

webrtc

various webrtc utilities

image

various image utilities

https://imageresizer.com/ https://www.remove.bg/ https://www.base64-image.de/

video

various video utilities

cctv - scan video file for people

audio

various audio utilities

https://trekcore.com/audio

https://mp3cut.net/

html components

html components

npm projects

projects that have been published to npm

http file upload

browser extensions

various browser extensions

simple native message

micro-controllers

micro-controllers

my-music

my music

links

link cloud

blog

just throwing together a blog of code, it'll get better with time

some highlighted articles

streaming upload with fetch

shop

buy things i recommend, support me to write more free and open source software

games

some simple games

games

title design at https://www.textstudio.com/