Show HN: Running a public CORS proxy on the open internet for 4 years
mariusbolik Tuesday, February 10, 2026Hi HN — solo developer here.
I built this tool ~4 years ago purely to solve my own frustration with CORS and repeated proxy setup. The idea was intentionally boring: just prefix a URL and get control over the request and response.
Somehow it grew to serving billions of requests per day, including usage by companies and universities.
I’m sharing it here mainly to:
- get technical feedback - learn what people would actually use a proxy like this for - understand what I should simplify or remove
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corsproxy.io