TURL.ca
A URL shortener whose links cannot be re-pointed, with a safety preview and optional citation snapshots.
TURL.ca shortens a URL and then refuses to change where it points. A code created for one destination keeps that destination, which closes off the most useful trick available to whoever controls a short link: waiting until it has been shared widely, then quietly sending it somewhere worse.
Destinations are screened for known malware and scams. A link to a site that has not yet earned a clean reputation opens a transparency page first, showing where the link goes and what the screening found, so the click is informed rather than hopeful. Only clean links inside the family redirect straight through.
Citation mode captures a snapshot of the destination at the moment you shorten it, for the case where you are citing a page that may not say the same thing next year. Verified links come with a downloadable QR code.
For scripts and agents there is a REST API with an OpenAPI 3.1 description and a Model Context Protocol server, all on the same free account.
2007, and again now
The first TURL.ca launched in 2007 as part of the original Pastebin.ca family. The rebuilt version keeps the short-link idea and puts the weight on permanence and on letting people see a destination before they commit to it.
Its nearest siblings are Filebin.ca for files and Attn.ca for personal alerts.