Skip to content

Instantly share code, notes, and snippets.

View charlesroper's full-sized avatar
🌱

Charles Roper charlesroper

🌱
View GitHub Profile
@charlesroper
charlesroper / Digital agencies serving charities, social justice, and civil society.md
Last active October 10, 2025 22:08
Digital agencies serving charities, social justice, and civil society.md

Digital agencies serving charities, social justice, and civil society

A curated, UK-leaning list of digital agencies serving charities, social justice, and civil society.

Full-service & product/web build

  • Torchbox – employee-owned; Wagtail CMS creators; deep nonprofit track record. ([Torchbox][1])
  • Reason Digital – builds sites, apps, and tools for charities; impact-focused. ([Reason Digital][2])
  • Fat Beehive – charity website specialists; long-standing sector focus. ([Fat Beehive][3])
  • The Developer Society (DEV) – UK not-for-profit co-op working exclusively with charities/NGOs. ([The Developer Society][4])
@charlesroper
charlesroper / Volunteer Your Skills.md
Created October 10, 2025 22:05
Volunteer Your Skills.md

Volunteer Your Skills

Volunteering

  • DataKind UK – volunteer data & digital projects. ([DataKind UK][1])
  • Digital Candle – free 1-hour advice calls for charities. ([digitalcandle.org.uk][2])
  • CodeYourFuture – volunteer to teach/mentor. ([CodeYourFuture][3])
  • codebar – coach at inclusive coding workshops. ([codebar][4])
  • AbilityNet “ITCanHelp” – accessibility-minded tech support volunteering. ([abilitynet.org.uk][5])
  • Reach Volunteering – skills-based volunteering marketplace. ([reachvolunteering.org.uk][6])
@charlesroper
charlesroper / alt-text.md
Created September 13, 2025 12:36
Alt text example
z0f76a1d14fd21a8fb5fd0d03e0fdc3d3cedae52f

Alt text (concise)

Line chart titled “US Unemployment Rate” comparing U-3 (unemployed) and U-6 (under-employed) from Dec 2016–Dec 2022. Both series are steady and slowly falling through 2019, then spike sharply at the start of the COVID-19 pandemic (U-3 ~15%, U-6 ~23%) and decline through 2021–2022. By late 2022 U-3 is ~3–4% and U-6 ~6–7%. U-6 is consistently higher than U-3 throughout.

Extended description (for complex image)

  • What the chart shows: Two lines: an olive line for Unemployed (U-3) and a blue line for Under-employed (U-6), plotted as percent of the labor force on the y-axis (3%–23%) across time on the x-axis (Dec 2016 to Dec 2022).
  • Series meaning (context):
@charlesroper
charlesroper / dragon_party_data.json
Created July 26, 2025 15:45
A JSON schema for testing that captures the state of the “Dragon Slayers United” party – including member profiles with classes, levels and equipment; current quest details and objectives; shared inventory; game settings and notification preferences; cumulative stats and metadata such as creation timestamp and version.
{
"adventureParty": {
"name": "Dragon Slayers United",
"members": [
{
"id": 1,
"name": "Aria Stormblade",
"class": "Ranger",
"level": 8,
"skills": ["Archery", "Stealth", "Tracking"],
@charlesroper
charlesroper / CLI tools.md
Last active July 29, 2025 02:15
Modern CLI Tools for nix and Windows.md

Modern CLI Tools for *nix and Windows

A collection of CLI tools I use (or have used). Most can be installed using your *nix distro’s package manager, or with Scoop on Windows. If you’re not already using Scoop, it's definitely worth trying.

✨ Other lists you might find interesting
@charlesroper
charlesroper / eza-completion.ps1
Last active July 20, 2025 09:57
Native tab-completion for eza on PowerShell 7+
<#
eza-completion.ps1
──────────────────
Native tab-completion for eza on PowerShell 7+
Drop this file in your $PROFILE directory and source it:
. (Join-Path (Split-Path $PROFILE -Parent) "eza-completion.ps1")
Make sure the following PSReadLine options are set:
@charlesroper
charlesroper / Summary of Andy Masley’s AI articles.md
Created May 17, 2025 00:19
Summary of Andy Masley’s AI articles.md
@charlesroper
charlesroper / How much bandwidth and CO₂e does an adblocker save.md
Last active May 16, 2025 23:32
How much bandwidth and CO2e does an adblocker save.md

How much bandwidth and CO₂e does an adblocker save?

ChatGPT o4-mini-high; 2025-05-17

On average, studies show that a heavyweight ad- and tracker-blocker like uBlock Origin saves around a third of the data you’d otherwise download – and in concrete terms:

  • Bandwidth saved per page load
    In a diverse set of real-world tests on hundreds of popular sites, the average bandwidth saving from ad- and tracker-blocking was 899 KB (with a median of just under 500 KB and a 95th-percentile of 2.76 MB) (Brave). This corresponds to roughly 25–34 % less data transferred compared with no blocker (arXiv).
  • CO₂e saved per page load
@charlesroper
charlesroper / Comparing Email to Other Energy Expenses.md
Last active May 16, 2025 22:59
Comparing Email to Other Energy Expenses.md

Comparing Email to Other Energy Expenses

3–5 kg CO₂e per year (email footprint) ≈

Activity CO₂e produced Notes
Boiling a full kettle ~60–100 times ~50–70 g each 3 000–5 000 g = ~70 kettles
Driving a petrol car ~15–25 miles ~0.2–0.3 kg CO₂e per mile UK average car
1–2 roast dinners ~2–3 kg each Meat-heavy meal (esp. lamb/beef)
@charlesroper
charlesroper / The Energy of an Email.md
Last active May 16, 2025 18:35
The Energy of an Email.md

The Energy of an Email

Produced by ChatGPT o3; 2025-05-16; thought for 1m28s – see Appendix

Question

Explore the veracity of this claim:

Based on the older figures, some people have estimated that their own emails will generate 1.6kg (3.5lb) CO2e in a single day. Berners-Lee himself also calculated that a typical business user creates 135kg (298lbs) CO2e from sending emails every year, which is the equivalent of driving 200 miles in a family car.