What is 29a.ch?

29a.ch is the personal website of Jonas Wagner. It hosts a collection of browser-based experiments and tools, along with articles documenting updates to those projects. If you are looking for a company, product, or service behind the domain, there isn't one—it is an individual developer's site.

What you'll find on the site

The homepage organizes the work into experiments and recent articles.

Experiments

The site lists several interactive tools that run in the browser:

• TimeStretch Player — an audio player that can change the speed and pitch of audio independently.
• Analog Film Emulator — a tool to emulate the look of analog film.
• Forensically — a set of tools to forensically analyze photos.
• Neonflames — a tool for drawing your own nebula in the browser.

A "View all my experiments" link suggests these are a subset of a larger collection.

Recent articles

Articles document project updates. One example is "C2PA Content Credential Photo Forensics," dated 2025-04-12, which describes adding C2PA metadata reading support to Forensically.

Who runs it

The site is attributed to Jonas Wagner. Articles carry his byline, and the source description identifies 29a.ch as his personal website. There is no indication of a team, company, or commercial entity operating the domain.

When this matters

This page is useful if you want to know whether 29a.ch is an official product site (it is not), who is behind a specific tool like Forensically (Jonas Wagner), or where to find browser-based experiments for audio, film emulation, photo analysis, and generative drawing.