UtilityKit

500+ fast, free tools. Most run in your browser only; Image & PDF tools upload files to the backend when you run them.

Markdown & HTML Share

Upload a .md or .html file, get a short link; recipients view it rendered, copy, or download it

About Markdown & HTML Share

Markdown & HTML Share turns a .md or .html file into a clean, shareable link in seconds — no account, no install, no ads. Upload your file, pick how long the link should live (from ten minutes up to 24 hours), optionally cap how many times it can be opened, and hand off the URL or a downloadable QR code. When a recipient opens the link on any device, the file is shown fully rendered: Markdown is converted to a styled, readable document, and HTML is displayed exactly as authored. Every share also exposes the raw source with a one-click copy button and a download button that returns the original file with the correct name and extension. Previews run inside a sandboxed frame that is isolated from the rest of the site, and HTML scripts stay disabled until the viewer explicitly opts in — so opening a shared file is safe. For sensitive documents, add a password: your browser encrypts the file with AES-GCM before it ever leaves your device, so the server stores only ciphertext. Files up to 130 KB are supported, and every share auto-deletes within 24 hours.

Why use Markdown & HTML Share

Rendered On Any Device

Recipients see Markdown as a styled document and HTML as a live page — no need to download and open the file locally.

Copy And Download

Every share exposes the raw source with one-click copy and a download button that preserves the original filename and extension.

Safe Previews

HTML renders inside a sandboxed frame isolated from the site, and embedded scripts stay disabled until the viewer explicitly enables them.

Client-Side Encryption

Add a password and your browser encrypts the file with AES-GCM before upload — the server stores only ciphertext it cannot read.

Auto-Expiry And Load Limits

Links expire on your schedule and can self-destruct after a set number of opens, so nothing lingers by accident.

No Account, No Ads

Share documents instantly without sign-up, email, or tracking, plus a QR code for hands-free mobile handoff.

How to use Markdown & HTML Share

Click the upload area or drag in a .md, .markdown, .html, or .htm file (up to 130 KB). The tool detects whether it is Markdown or HTML automatically.
Choose an expiry — 10 minutes, 1 hour, 6 hours, or 24 hours (the maximum). The share is permanently deleted once this time passes.
Optionally set a link load limit so the file self-destructs after a set number of opens. Set it to 1 for a one-time share.
Optionally enter a password to encrypt the file in your browser with AES-GCM before upload — only people with the link and password can read it.
Click Create share link, then copy the URL or download the QR code PNG to share it anywhere.
Recipients open the link in any browser and see the file rendered. They can switch to the Source tab to copy the raw text, or click Download to save the original file.

When to use Markdown & HTML Share

When you want to send someone a README, spec, or notes as a rendered page instead of a raw .md file they have to open in an editor.
When you need to share a standalone HTML report, invoice, or exported page and want the recipient to see it exactly as designed.
When you want a link that stops working automatically after ten minutes, an hour, or up to a day, with zero follow-up.
When sharing a sensitive document — password mode keeps the plaintext entirely off the server.
When you need a one-time document link that self-destructs after the first person opens it (link load limit = 1).
When handing off a document in person and a scannable QR code is faster than typing a URL.

Examples

Sharing a README as a rendered page

Input: README.md — headings, a feature table, and fenced code blocks

Output: A 7-day link that opens as a styled, readable document on any device, with Copy and Download buttons for the raw Markdown.

One-time HTML report handoff

Input: report.html — a self-contained exported report

Output: A link with load limit 1 that renders the report as a live page, then self-destructs after the first open.

Tips

Set the link load limit to 1 for a true one-time document handoff — the file self-destructs the moment the first recipient opens it.
Use a short expiry together with a load limit of 1 for maximum ephemerality; the share disappears at whichever limit hits first.
For sensitive documents, always use password mode — the server stores only ciphertext and cannot help recover the content.
The password is never in the shareable URL, so you can post the link publicly and send the password through a separate channel.
Leave HTML scripts disabled unless you trust the source; static HTML still renders fully without enabling JavaScript.

Frequently Asked Questions

What file types can I share?▾

Markdown files (.md, .markdown, .mdown, .mkd) and HTML files (.html, .htm). The tool auto-detects the type from the file extension, with a content-based fallback. Markdown is rendered to a styled document; HTML is displayed as an authored page.

How large a file can I upload?▾

Up to 130 KB of Markdown or HTML — roughly 130,000 characters, comfortably more than a typical README or article. Password-protected files are encrypted before upload, so their practical limit is a little lower. For larger assets, host them elsewhere and link to them.

Is it safe to open a shared HTML file?▾

Yes. HTML previews render inside a sandboxed iframe that runs in an isolated origin and cannot access this site's data, cookies, or storage. If the file contains scripts, they stay disabled until you explicitly click Enable JavaScript, so nothing runs without your consent.

Can the server read my file?▾

Plain shares are stored as readable text on the server until they expire. If you set a password, the server stores only AES-GCM ciphertext — your browser encrypts the file before it is transmitted and decrypts it locally after download. The password itself is never sent to the server.

How do recipients copy or download the file?▾

Every share has a Source tab with a one-click copy button for the raw text, and a Download button that saves the original file with its correct name and extension (.md or .html). No account or extra step is required.

What happens when a share expires or hits its load limit?▾

It is permanently deleted and the link stops working. Opening an expired, deleted, or used-up link shows a clear message. There is no recovery — expiry and load limits are by design.

Do I need an account?▾

No. Create and view shares with no sign-up, no email, and no personal information required. The tool is completely free.

Does the Markdown preview support tables and code blocks?▾

Yes. Rendering uses GitHub-Flavored Markdown, so tables, task lists, fenced code blocks, blockquotes, and other common Markdown features display correctly, styled for comfortable reading on any device.

Explore the category

Glossary

Sandboxed iframe: A browser frame that runs untrusted content in an isolated origin with restricted permissions, so it cannot read the parent page's cookies, storage, or DOM.
GitHub-Flavored Markdown: A widely used Markdown dialect that adds tables, task lists, strikethrough, and fenced code blocks on top of standard Markdown.
AES-GCM: Advanced Encryption Standard in Galois/Counter Mode — a modern authenticated encryption algorithm used to encrypt password-protected shares entirely in your browser before upload.
Time To Live (TTL): The duration a share remains accessible before the server automatically deletes it, ranging from 10 minutes to a maximum of 24 hours.
Link load limit: An optional cap on how many times a share link can be opened. Once reached, the server permanently deletes the file and the link stops working.