A Rentry Alternative
Rentry has been running since 2017, needs no account, and gives you more control over how a page looks than this site does — fonts, colours, borders, spoilers, admonition boxes, a URL you pick yourself. If that is what you are after, it is the better tool and this page will not pretend otherwise.
Two things it does not do: keep a document from being readable by anyone who has the link, and render diagrams or maths. Those are the gaps MarkdownBin fills.
Side by side
| Feature | MarkdownBin | Rentry |
|---|---|---|
| Share without an account | Yes | Yes |
| Rendered markdown | Yes | Yes |
| Syntax highlighting | Yes | Yes |
| Tables and task lists | Yes | Yes |
| End-to-end encryptionA Rentry entry is readable by anyone who has the URL, and by Rentry | Yes | No |
| Mermaid diagrams | Yes | No |
| Maths renderingLaTeX via KaTeX, inline and display | Yes | No |
| Edit or delete after publishingRentry issues an edit code; pastes here are immutable | No | Yes |
| Choose your own URLrentry.co/your-name, versus a generated id here | No | Yes |
| View counter | No | Yes |
| Page styling and themesRentry exposes fonts, colours, borders, backgrounds and more | No | Yes |
| Colours, spoilers and admonition boxesRentry adds its own syntax on top of markdown | No | Yes |
| Long documents100,000 characters here; Rentry allows 200,000 | Partial | Yes |
Compiled July 2026 from Rentry's own documentation. Rentry changes; check their docs before relying on any row here.
An unlisted URL is not privacy
A Rentry entry is public to whoever holds its address. There is no password option, no private mode, and no way to restrict who reads it — the URL is the only thing standing between the document and anyone else, and Rentry itself stores the text in the clear.
For a build log or a character sheet that is completely fine, and it is what most pastes are. It is the wrong shape for anything carrying a credential, a customer name, or something not yet announced, because a URL is a weak secret — it lands in chat logs, in browser history, in referrer headers, in whatever tool indexed the message it was pasted into.
An encrypted paste here is different in kind rather than degree. Your password derives a key in your browser, the content is encrypted before anything is sent, and the server receives ciphertext it has no way to read. Losing the link is still bad; it is no longer the same as losing the contents.
Diagrams and maths
Rentry supports tables, task lists and highlighted code, which covers most of what markdown is used for. It does not render Mermaid diagrams or LaTeX, so a flowchart stays a fenced code block and an equation stays a row of dollar signs and backslashes.
Both render here. A mermaid block becomes a diagram you can zoom, pan, copy or download, and maths is typeset with KaTeX inline and in display blocks. If you are sharing an architecture sketch or a derivation, that is the difference between a link someone reads and a link someone has to decode.
When Rentry is the better choice
If you need to change the document later, use Rentry. Its edit code lets you edit, rename or delete an entry after publishing, and pastes here are immutable — the only way to correct one is to make a new one.
The same goes for a URL you can read out loud, a view count, a longer document, or a page styled to look like something in particular. Rentry does all of that and MarkdownBin does none of it.
The honest summary: Rentry is a small publishing tool, and a good one. This is a sharing tool with a stronger renderer and real encryption. If the document will change, or its look matters, use Rentry. If it contains diagrams or maths, or it should stay unreadable to everyone but its recipient, use this.
Try it
Paste markdown, get a link. Add a password if it should stay private. No account, no email, nothing to install.