Valid & Invalid URL Examples - Paywint API Documentation

Overview

This page provides clear examples of URLs that meet Paywint’s requirements, and those that will be rejected during validation. Use these examples as a reference when generating or verifying document URLs.

Valid URL Examples

These URLs use HTTPS, point directly to downloadable files, and meet all security and accessibility requirements:

[https://cdn.example.com/docs/business-license.pdf](https://cdn.example.com/docs/business-license.pdf)
[https://secure-storage.mycompany.com/uploads/id-proof.png](https://secure-storage.mycompany.com/uploads/id-proof.png)
[https://drive.google.com/uc?export=download&id=1ABC123xyz](https://drive.google.com/uc?export=download&id=1ABC123xyz)
[https://bucket-name.s3.us-west-1.amazonaws.com/registration-document.jpg](https://bucket-name.s3.us-west-1.amazonaws.com/registration-document.jpg)
[https://assets.examplecdn.com/files/proof-of-address.jpeg](https://assets.examplecdn.com/files/proof-of-address.jpeg)

Invalid URL Examples

The following URLs fail validation due to security issues, unsupported formats, private networks, or non-direct links:

[http://example.com/document.pdf](http://example.com/document.pdf)                     (not HTTPS)
[https://192.168.1.10/file.pdf](https://192.168.1.10/file.pdf)                       (private IP address)
[https://localhost:5000/file.pdf](https://localhost:5000/file.pdf)                      (localhost)
ftp://files.example.com/document.pdf                 (unsupported protocol)
[https://drive.google.com/file/d/12345/view](https://drive.google.com/file/d/12345/view)           (preview link, not direct download)
[https://example.com/files/large-document-12mb.pdf](https://example.com/files/large-document-12mb.pdf)    (exceeds 7 MB size limit)
[https://myapp.internal.company/documents/id.pdf](https://myapp.internal.company/documents/id.pdf)      (internal network resource)

Quick Tips

Always test URLs in an incognito browser — if it requires login, it will fail validation.
Avoid preview/share pages from cloud storage.
Direct links must end with a file extension (e.g., .pdf, .jpg, .png).
Ensure the file is publicly reachable via HTTPS.

​Overview

​Valid URL Examples

​Invalid URL Examples

​Quick Tips

Overview

Valid URL Examples

Invalid URL Examples

Quick Tips