Interactive Cheatsheet about CORS

What it does

CORS headers are rules that control how a website can interact with other websites or APIs. They act as a set of permissions for the browser, defining which requests can be sent and what data can be shared between different sources. In this resource, you will find comprehensive documentation for all CORS-related headers, including syntax, practical examples, common errors, and solutions. Whether you're troubleshooting a CORS error on your website or developing an API, you'll find the information you need here. Define which origins are allowed to access cross-origin resources. Specify which headers clients can use in cross-origin requests. Specify which HTTP methods are allowed in…from blockedbycors.dev

• WI
  Will It CORS? – an automatic CORS explainer2020 · willitcors.com · ▲152

  Test CORS online with our free CORS tester. Check CORS on any URL for free.

• 
  Will it CORS?2020 · httptoolkit.com · ▲5

  Nobody understands CORS, except this one magical web page

• 
  AcrossTabs – Easy communication between cross-origin browser tabs2017 · github.com · ▲107

  Easy communication between cross-origin browser tabs. Simplified "CORS"ing! - wingify/across-tabs

• 
  HTTP Documentation2023 · http.dev · ▲75

  HyperText Transfer Protocol (HTTP) explained, with examples

• 
  7 Cheatsheets for Python, JS, and More, Built with Markdown and LaTeX2019 · github.com · ▲17

  A selection of printable, one-page cheatsheets, generated from Markdown using Pandoc & LaTeX - kickstartcoding/cheatsheets

• 
  A CLI to avoid remembering HTTP status codes2022 · github.com · ▲44

  To understand the meaning of an HTTP status code and list all codes belonging to a specific class from your terminal.

• 
  /dev/null▲486

  a social network for devs

  Dev tools · 3d ago · dev-null.sh

• 
  Whiteboard (YC W26) – an open-source IDE for thoughtful software design▲423

  open-source IDE for thoughtful software design. Contribute to devdotfast/whiteboard development by creating an account on GitHub.

  Dev tools · 28d ago · github.com

• 
  Reladraw – A diagram language where you decide where to place things▲411

  Contribute to reladraw/reladraw development by creating an account on GitHub.

  Dev tools · 26d ago · github.com

• 
  OpenBot▲362

  Grok Bot alternative: free, local, open-source, multiplayer

  Dev tools · 23d ago · openbot.run

• 
  Talanoa▲346

  Hi HN, I’m a fullstack developer, and honestly, I’ve lost count of how many side projects I’ve worked on over the years. But one idea kept coming back to me: a different kind of email client. It first came to me in 2014: “What if we could handle emails more like conversations?” Every year, I’d revisit this concept in my “Build Notes.” Ten years later, no one had built exactly what I had in mind — so I finally decided to do it myself. That’s how Talanoa was born. I wanted something focused on people, not timelines. I was tired of marking messages as unread just to remember to reply later, or…

  Dev tools · 21d ago · talanoa.email

• 
  CoreSpeed▲332

  One MCP for everything your agents need: apps, memory, tools

  Dev tools · 28d ago · corespeed.io

• 
  Flipner AI▲1,623

  Capture your ideas & craft texts with AI's touch

  AI · 2024 · flipner.webflow.io

• 
  Typeframes▲1,315

  Video creation for makers

  Work · 2024 · revid.ai

• 
  Superlist▲1,252

  The task layer for your AI agents

  Work · 2024 · superlist.com

• 
  MarketingIdeas.com▲1,230

  Never run out of marketing ideas ever again

  Growth · 2024 · marketingideas.com

• 
  Layers▲1,198

  A home for designers

  Work · 2024 · layers.to

• 
  Heyday▲1,178

  AI copilot for your own research, notes & conversations

  AI · 2024 · heyday.xyz