Well, better not encode the URL to base64.
Try do something like encodeURIComponent() instead:
```
> encodeURIComponent("https://google.com") 'https%3A%2F%2Fgoogle.com'
```
You may add a switch to "request directly on failure" for that case.
[Still it may be useful for certain end users as compressor proxies are self host-able nowadays like https://github.com/Yonle/bandwidth-hero-proxy (for Bandwidth Hero browser addon)]

