What Links Are Not Allowed on h1.nu and How to Report Abuse

h1.nu blocks shortened links that involve phishing, scams, gambling, hate speech, spam, or other deceptive and harmful content. The service states that every short URL passes through automated filters and checks, and that violating links are banned or deleted. If you find a bad link that slipped through, you can report it by emailing [email protected].

What h1.nu Does Not Allow

According to h1.nu's own published rules, the following categories are prohibited from being shortened:

• Phishing links — URLs designed to steal credentials or personal data
• Scams and fraud — deceptive links that trick users, including "masked deceit"
• Gambling and casinos — links to casino or gambling sites
• Hate speech — hateful or crude content
• Spam — bulk or junk links that clog the web
• Stolen or illegal content — links tied to stolen wealth or unlawful activity

The site frames this as a deliberate anti-abuse stance: it positions itself as a shortener that "permits no fall" and refuses to give a short link a "thief's foul name."

How the Filtering Works

h1.nu describes a two-layer approach:

1. Automated filters and checks — the site says "a thousand checks in silence" run on every short URL created, scanning for the prohibited categories above.
2. Enforcement on violations — if a link is caught, the system blocks it and the shortened URL is banned or deleted. The site states there are "no loopholes" for those who try to bypass the rules.

This means you don't need to pre-approve a link or register an account to be subject to these rules — the checks apply to every shortening request.

How to Report an Abusive Link

If you come across a short link on h1.nu that violates the rules and appears to have slipped past the filters:

1. Email [email protected] with the details of the offending link.
2. The site states it will "act fast" to remove the wrong link.

The reporting process is described as a direct email channel — there is no separate abuse form mentioned in the available information.

Key Points to Remember

If your intended link falls into any of the prohibited categories, don't expect it to work — the filters are designed to catch it. If you're shortening a legitimate link and it gets blocked in error, the same email address is the contact point to raise the issue.