Websites

Hacker News

• See all posts from a specific domain: news.ycombinator.com/from?site=stratechery.com
• Front page on Feb 19, 2007: news.ycombinator.com/front?day=2007-02-19
• Posts with over 300 points: news.ycombinator.com/over?points=300

Reddit

• View posts from multiple subreddits: reddit.com/r/pics+videos
• Alternative to reddit.com/r/pics: pics.reddit.com
• Append .json at the end of a URL to get a JSON response:
  • reddit.com/r/pics.json
  • reddit.com/u/spez.json
• See all posts from a specific domain: reddit.com/domain/news.ycombinator.com
• Create a new community: reddit.com/subreddits/create
• View joined subreddits: reddit.com/subreddits/mine

GitHub

• View public SSH/GPG keys for a profile: github.com/gorhill.keys / github.com/gorhill.gpg

DuckDuckGo

• DuckDuckGo Bangs
• DuckDuckGo Instant Answers
  • random person
  • color picker
  • #a326bf
  • rubiks cube patterns
  • qr code sample_text
  • shorten https://duckduckgo.com: Shorten a link.
  • expand https://bit.ly/2MQPwSt: Expand the shortened link to original link.
  • loan $100000 at 5% with 20% down paymeny for 10 years: Calculate monthly payments on a loan.
  • recipe curry: Find recipes quickly.
  • is youtube down: Downtime checker.
  • xkcd 353: xkcd comics.
  • password 30 strong: Password generator.
  • figlet DUCKduckGO: FIGlet.
  • 2048: 2048.
  • timer
  • stopwatch
  • deal 7 cards
  • tldr tar: Unix cheatsheets.
• "I'm Feeling Lucky" for DuckDuckGo: If you prefix the search query with '\', it will open the first search result. Adding ! at the beginning or the end of the search term will achieve the same thing.

Google

• URL for "I'm Feeling Lucky": https://www.google.com/search?btnI=I&q=SEARCH_TERM
• color picker
• calculator
• unit converter
• internet speed test

Google Search easter eggs

• askew
• game of life
• do a barrel roll
• google in 1998
• chess
• wizard of oz
• dog
• cat
• joey tribbiani
• chicxulub

YouTube

• Create playlist from video IDs: youtube.com/watch_videos?video_ids=dQw4w9WgXcQ,jNQXAC9IVRw,LeAltgu_pbM
• Creepy redirect: youtube.com/watc?v=QH2-TGUlwu4 deprecated. This used to redirect to the classic Username 666 video.

See also: YouTube Oddities

IRC

• Register your nick

  /msg NickServ REGISTER <password> <email>
  

• Identify your nick

  /msg NickServ IDENTIFY <nick> <password>
  

• Change password

  /msg NickServ SENDPASS <account_name>
  /msg NickServ SET PASSWORD <new_password>
  

Onion links to popular services

• Twitter, Facebook, ProtonMail, DuckDuckGo, Keybase, BBC, The New York Times, Searx