Code Share: share code online, in real time

What is Code Share?

Code Share is a real-time collaborative code editor that lives at a link. There is no project to set up and no workspace to invite people to: you open a room, paste code, and everyone with the link sees the same text as it changes. It is built for the moments when a screenshot is not enough and a full IDE session is too much: reviewing a function on a call, walking a candidate through a problem, fixing a config with the person who owns it, or teaching a class where nobody has the same machine.

Features

• Live sync. Every keystroke is broadcast to the room over a WebSocket; changes arrive in milliseconds, with a live count of who is in the room.
• Syntax highlighting for 16 languages, including JavaScript, TypeScript, Python, Java, C++, Go, Rust, SQL, HTML and Markdown. The language is set per tab and changes for everyone at once.
• Two tabs in one room. Press + to add a second tab with its own content, language and undo history, and double-click a tab to name it: code in one, the failing log or your notes in the other, both live under the same link.
• Short, shareable links. A room is logshare.in/#room: easy to read out on a call or paste into a ticket.
• Private rooms. Lock the room you are in with a PIN from the Tools menu, or create one that is private from the start. Only people with the PIN get in.
• Take the code anywhere. The Tools menu hands the room's content to the diff checker, the HTML viewer, the JSON formatter or Log Share in one click.
• Nothing to install, nothing to sign up for. It works in any modern browser, on a phone too.
• It cleans up after itself. Public rooms are deleted after 7 days without a visit or an edit; private rooms at the expiry you chose.

How to share code online without a login

1. Click Open a code room. Your browser lands in a new room with its own link.
2. Paste your code and choose the language from the dropdown so it highlights correctly.
3. Press Copy link and send it by chat, email or voice. No login is needed on their side.
4. Edit together. When you are finished, just close the tab; the room expires on its own.

Real-time code sharing for interviews and pair programming

Code Share is a collaborative code editor you can open in seconds, free and without signing up: both people type in the same document and see each other's changes as they happen. For a coding interview, put the task in the second tab and let the candidate work in the first; lock the room with a PIN if it should not be reachable afterwards. There is no compiler or run button, by design. Candidates talk through what the code would do, and the room stays a shared document rather than a sandbox. If you need execution, use a browser IDE alongside it.

Code Share compared with pasting code in chat

Chat flattens indentation, wraps long lines and turns every follow-up change into another paste. A room keeps one canonical copy that both of you edit, with line numbers to point at and highlighting to read by. Compared with a full online IDE, it deliberately does less: there is no compiler, no accounts and no file tree, which is exactly why it opens in a second and works for a colleague who has never seen it before.

Privacy and security

Rooms are unlisted. The link is a random identifier that is never published or indexed, traffic is encrypted in transit, and the content is stored only so it can be synced between the people in the room. Anyone with the link can read and edit, so treat a public room like an unlisted document: for anything sensitive, use a Private Room, which sends nothing to a browser until the PIN has been entered and expires within a day. Never paste passwords, API keys or private keys into any shared editor.

Frequently asked questions