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MYSTERIOSA: A New French Treasure Hunt Launched in 2026 Latest

What Is MYSTERIOSA? MYSTERIOSA is a French treasure hunt launched on June 4, 2026, by Éditions du Trésor. It is based on an illustrated book of around 120 pages containing stories, artwork, hidden clues, and eleven puzzles. Solving them should eventually lead participants to a chest hidden somewhere in France. The hunt is aimed primarily at adults because of the announced difficulty of its puzzles. Although players are free... [read more]Treasure hunter digging beside a partly uncovered wooden chest

Free Tools I Use to Test and Improve My Website

Check the Technical Foundations of a Page Before measuring performance or running an SEO audit, I begin by checking the document structure and the overall technical quality of the page. The W3C HTML Validator and Lighthouse are two excellent starting points, as they examine different but complementary aspects. The W3C HTML Validator The W3C HTML Validator is usually the first tool I use. It checks whether a page’s markup... [read more]W3C HTML validation form

AppErgo v0.9: a transition step between v0.8 and v1

From v0.8 to v0.9: a long construction phase Version 0.8 has had a special place in AppErgo’s history. It lasted longer than some previous versions because it supported a major evolution of the website. With v0.8, AppErgo went from around ten web tools to more than 150, which deeply changed the scale of the project. The following versions, from v0.8.1 to v0.8.9, then made it possible to stabilise many tools, add new ones... [read more]AppErgo English homepage in version 0.9.1

The 6 AppErgo commitments for its web tools

Commitment #1 — 100% free AppErgo’s online tools are free. Access is not limited by a payment, a subscription, a credit system, or a trial version. The goal is to provide practical utilities for simple everyday needs. As I have personally used free online tools for a long time, it felt natural to offer AppErgo’s tools in the same spirit: at no cost to visitors. Commitment #2 — No sign-up AppErgo’s online tools are freely... [read more]Label with the word FREE

AppErgo v0.8: the online tools catalog scales up

From 10 to more than 150 tools The most obvious change is the size of the catalog. Between v0.7 and v0.8, AppErgo grew from around ten tools to more than 150. Several categories have been added or considerably expanded. The “Codes” category is particularly extensive, with around 60 tools on its own. This growth does not mean that every page has become heavy. Individual tool pages remain lightweight and load quickly. Only the... [read more]"All online tools" page

Why free tools, no account, and no intrusive ads?

The problem with small tools that make things complicated Sometimes, all we need is a tool for a very simple action: counting characters, changing text case, generating a password, picking a random number, or starting a timer. In these situations, every obstacle quickly becomes annoying. A window blocking the screen, a mandatory sign-up, an overloaded page, or a button that is difficult to find can be enough to make people... [read more]Accessing a website should be simple.