Free URL Shortener — Custom Aliases, UTM Builder & Analytics

1. Paste your destination URL into the input field (or switch to bulk mode and paste multiple URLs, one per line).
2. Optional: type a custom alias (3–20 letters, numbers, hyphens, or underscores) — leave blank for an auto-generated code.
3. Optional: toggle UTM Tracking and fill in source/medium/campaign (term and content are optional) to preserve attribution through the redirect.
4. Optional: set an expiration preset (1 minute to 365 days) or a custom date/time, and toggle password protection if the link should require unlocking.
5. Click Shorten, then copy the fyntools.com/s/{code} link or click the QR icon to download a scannable code.
6. Open /s/{code}/stats at any time to check click totals for that specific link.

Most free shorteners hand you a random six-character code and stop there. FYN Tools’ URL Shortener adds the controls a real campaign needs in one form: a custom alias so the link reads /s/spring-sale instead of /s/x7Kq2, a five-field UTM builder (source, medium, campaign, term, content) that gets appended before the code is created, an optional password gate, and expiry presets from one minute to one year.

The alias field is validated client-side against a strict pattern — 3 to 20 characters, letters, numbers, hyphens, or underscores — so you get instant feedback instead of a server round-trip rejection. Bulk mode accepts one URL per line and returns a result row per line, including per-row errors if a specific alias collides.

Technically, alias validation runs client-side against a fixed pattern (3–20 characters: letters, digits, hyphen, underscore) before the request reaches the server, which is why invalid aliases are rejected instantly rather than after a round trip. UTM parameters are not stored separately — they are serialized into the destination URL at creation time, so the redirect target itself already contains full attribution.

A shortened link is a database row: short code → destination URL, plus optional metadata (UTM string, password hash, expiry timestamp, click counter). When a visitor opens /s/{code}, FYN Tools looks up the row, checks expiry and password, increments the click counter, and redirects. Nothing about the destination page changes — the shortener is a lookup layer in front of it.

How it works

Type or paste your destination URL. If you enable UTM tracking, five inputs (source, medium, campaign, term, content) get serialized into a query string appended to the destination before the short code is generated — so the link you eventually click still carries full attribution. Choose an expiration preset (1 minute up to 365 days) or leave it unset for a permanent link. Enabling the password toggle requires visitors to unlock the redirect before it fires. Submitting the form returns your short URL immediately; the QR icon renders a scannable code from that exact short link.

Need a scannable code instead of a link? Use our QR Code Generator.

• Multi-channel campaign tracking: Create one alias per channel (/s/ig-story, /s/email-blast) with the same destination but different UTM medium values, then compare click counts per /s/{code}/stats page to see which channel performed.
• Gated resource sharing: Enable the password toggle when sharing a pre-release page or internal document link outside your team so only people with the password can reach the destination.
• Flash-sale link cleanup: Set a 24-hour or 7-day expiry preset on a promo link so it stops resolving automatically once the sale ends, instead of manually deleting it later.
• Bulk product link rollout: Paste 10–20 product page URLs into bulk mode at once and get a short link for each row in a single pass, instead of repeating the single-URL form.