One creator, an openly stated relationship
This library and the 141 original one-page tools are part of the same creator project. These introductions are not independent third-party reviews. Tool introductions are researched and published individually in English and Korean. The number141 describes the original inventory, not completed editorial coverage.
Separate sites, direct links
Open-tool links take you to a separate website, usually in a new tab. An introduction is not the tool itself. Check the original site before providing files or relying on calculations. Related tools are selected for relevant functions and purposes, not to manufacture clicks or rankings.
Advertising is currently off
There are no live AdSense placements in this library. An existing parent-domain AdSense account or authorization is not a claim that this library has passed a separate content-quality review. No review request is being made in this phase.
Rules for future advertising
Only individually reviewed, useful articles may be considered. Ads must have an unambiguous advertisement label, remain separate from execution/download/navigation controls and never conceal content. Search, empty category, error, draft, contact and privacy screens are excluded. There are no sponsored rankings, paid tool placements or affiliate tracking links implemented by this project at this stage. Future commercial relationships must be disclosed where relevant.