How Old Is The Rulebook Screensaver
The How Old Is The Rulebook screensaver shows the fifty titles of the US Code of Federal Regulations ranked by years since last amendment, read live and key-less from the eCFR API. It's free, runs in your browser, and ESC exits.
Live preview
Press ESC to leave fullscreen. Settings are saved in your browser only.
How the How Old Is The Rulebook screensaver works
The saver reads the source described above and draws it on a canvas — no account, no tracking.
The fifty titles of the US Code of Federal Regulations ranked by years since last amendment, read live and key-less from the eCFR API. Some are edited constantly; some sit untouched for a decade, which usually means the agency stopped writing rules.
It refreshes on a schedule, so what you see stays current.
Colours and any options can be changed in settings; nothing is stored beyond your own browser.
What the eCFR is and how amendment dates work
The Code of Federal Regulations is the codification of the general and permanent rules of US federal agencies, arranged in fifty titles by subject. The eCFR is the continuously updated electronic version, maintained by the Office of the Federal Register, and the OFR says it updates the eCFR daily so that it is generally current within two business days.
The official print CFR works differently: each volume is revised once a year and issued quarterly, with different groups of titles updated at different points of the year. The OFR describes the eCFR as an unofficial editorial compilation of CFR material and Federal Register amendments, which does not provide legal notice until the Administrative Committee of the Federal Register grants it official status. People relying on it for legal research are told to verify against the official CFR and the Federal Register.
This board uses the eCFR API to find when each title was last amended and ranks the titles by how long ago that was. Age is only a rough signal. A long gap can mean a settled body of rules that needs no change, as easily as neglect, and the date reflects the text of the code, not enforcement or court decisions.
A worked example
The fifty titles of the US Code of Federal Regulations ranked by years since last amendment, read live and key-less from the eCFR API. Some are edited constantly; some sit untouched for a decade, which usually means the agency stopped writing rules.
Settings & tips
- Accent and Background recolour the display.
- Every value on screen comes from the live source — nothing is simulated.
- Press ESC to leave fullscreen.
Frequently asked questions
- Is this real data?
- Yes — it comes from the source named on this page and is refreshed on a schedule.
- Is a key needed?
- No. This source is fully key-less.
- Is it free?
- Yes, and it runs entirely in your browser.
- Is the eCFR the official version of the law?
- No. The Office of the Federal Register describes the eCFR as an unofficial editorial compilation; the official edition is the CFR, issued in print each year, alongside the Federal Register.
- How current is the eCFR?
- The Office of the Federal Register updates it daily, and it is generally current within two business days.