amirhosseinjpl/jpl-sub-processor

JPL Subscription Processor is a tool that takes a list of proxy server configurations, tests each one to see if it is actually working, filters out the slow or dead ones, and then generates a shareable subscription link containing only the good ones. It runs on Cloudflare's free serverless platform, meaning you do not need your own server to host it. The supported configuration types are VLESS, VMESS, and Trojan, which are protocols commonly used in network privacy tools and censorship circumvention setups. A subscription link is a standard format that privacy apps accept to import a list of proxy servers automatically. One of the main design decisions is that the latency testing happens in the user's browser rather than on the server. This matters because in restricted network environments, a server pinging a proxy from a data center will often get different results than a user pinging the same proxy from their home connection. By running the speed test in the browser, the tool measures the latency the real user will actually experience. Any configuration that takes more than 700 milliseconds to respond is dropped before the final link is generated. After the browser finishes testing, it sends only the passing configurations to the Cloudflare Worker. The Worker stores them in a key-value database provided by Cloudflare and returns a subscription link encoded in Base64 format. You can set an expiration time on the link so it stops working after a certain period. The tool also supports additional filtering: you can keep only specific protocol types from a mixed list, replace the IP addresses in configurations with custom ones or with addresses from CDN providers like Cloudflare, Gcore, or Fastly, and apply a naming prefix to all output entries. A hosted version of the web interface is available on GitHub Pages so you can use it without deploying any code yourself.