tf5.jp

What It Is

TF5（ティーファブGO） is a short URL service provided by 株式会社ティーファブワークス, with a very clear focus: serving schools, teachers, children, and parents. It is not a general-purpose short-link infrastructure platform for developers. Instead, it is built around education digitization scenarios such as GIGA School, addressing issues such as long URLs being difficult to print or read aloud, younger students struggling to type them, random short codes being hard to recognize, and public short-link services potentially being abused for phishing.

Core Features and Ecosystem

TF5 supports dedicated domains or subdomains for each school, helping improve link trustworthiness. Teachers can freely customize the path after the domain, including using numbers only, which is useful for lower-grade students who are not yet comfortable with lowercase English letters. The service can generate short links and QR codes, and it also offers a Google Chrome extension that creates a short URL and QR code for the current page with one click. On the security side, short links can be password-protected. It also supports publishing Google Document files as PDFs while keeping the access URL as a short link; combined with password protection, this can reduce the risk of documents being directly redistributed. However, the page also clearly notes that even if a password is set, information may still be leaked if the destination URL is shared.

Pricing and Business Model

The pricing information is fairly clear. The subdomain single-user plan costs 990 JPY/month before tax and allows up to 1,000 short links. The subdomain multi-user plan costs 1,490 JPY/month before tax or 14,900 JPY/year, allows up to 10,000 short links, and includes unlimited administrators. The dedicated-domain multi-user plan costs 19,900 JPY/year before tax. Payment methods include credit cards, and some annual plans support bank transfer. School customers receive a one-year free trial, which lowers the barrier for pilot adoption.

Pros, Cons, and Best-Fit Users

Its strengths are its focused use case, ease of use, readable custom paths, and improved trust for internal school use through dedicated domains and password protection. The downside is that the main content does not mention APIs, SDKs, open source, self-hosting, or developer integration capabilities, so it is not suitable for evaluation as programmable short-link infrastructure. It is better suited to Japanese schools, educational institutions, and teacher teams that need centralized management of classroom link distribution.

Access from China and Alternatives

The crawled text does not provide information about access from mainland China, ICP filing, payment availability, or related details, so access should be considered unknown. If used in an education environment in China, additional checks would be needed for network connectivity, Japanese interface suitability, payment methods, and compliance requirements. Alternatives include Bitly, TinyURL, Rebrandly, YOURLS, as well as local short-link or QR code services.