os.md is a lightweight, privacy-friendly URL shortener. Unlike other link shortening services, there are no ads, no tracking cookies, and no account required. Your short links never expire and redirect instantly with a fast 301 redirect. The ultra-short .md domain keeps your links as compact as possible — every character counts when you're sharing on social media or fitting text into limited spaces.

Shortening a link with os.md takes seconds. Paste your long URL into the box above and click "Shorten URL." You'll instantly receive a compact link like os.md/abc that you can copy and share anywhere. Want a memorable link? Click "Custom short URL" to pick your own slug — for example, os.md/my-link. You can also use our free Chrome browser extension to shorten the current page URL with one click — no need to copy and paste.

Long URLs are hard to share, look messy in messages, and can break when pasted into emails or social media posts. A URL shortener turns any long web address into a clean, short link that's easy to remember, copy, and share. Short links are perfect for:

• Social media — share clean links on Twitter, Facebook, Instagram bios, and LinkedIn posts
• Email marketing — keep newsletters tidy with compact links that don't break across lines
• QR codes — shorter URLs generate simpler, easier-to-scan QR codes
• Presentations & print — display memorable links on slides, flyers, posters, and business cards
• SMS & messaging — save character space in text messages with concise links
• Affiliate & tracking links — mask long affiliate URLs with branded short links