Security

Signed URL Inspector

Inspect presigned or SAS-style URLs locally and review provider hints, expiry windows, and notable query parameters.

Signed URLPaste the full URL
ProviderAWS S3 presigned URL
Expiry86400 seconds from signature time
Params3
X-Amz-AlgorithmX-Amz-ExpiresX-Amz-Signature

Use this tool when

These are the practical situations where this workflow usually earns its keep.

You need to inspect a presigned or tokenized download URL before using it or sharing it.

You want to understand the expiry window and key query parameters without manually parsing the whole link.

You need a safer summary of a signed URL for a support or incident conversation.

Download-link expiry troubleshooting

When a user says the file link stopped working, the first question is usually whether the signed URL was already outside its valid window.

Storage and integration debugging

Teams can review whether the link shape matches the cloud provider or signing strategy they think they are using.

Safer incident handoff

A parsed summary makes it easier to explain the problem to another engineer without re-pasting the entire live URL every time.

Common mistakes to avoid

These are the checks that usually keep the output useful instead of misleading.

Forwarding the whole signed URL into several tools or chats when the issue can be described more safely.

Assuming a long expiry parameter is the same thing as a still-valid signature without checking the whole context.

Ignoring the fact that some signed URLs expose internal bucket, path, or naming details even if the content itself is not downloaded.

Learn how to use this tool

Inspect presigned or SAS-style URLs locally so expiry windows, provider hints, and risky parameters are easier to understand before sharing them.

Read the guide

Tell us what is missing

If this flow helped only partly, leave feedback so we can understand the missing step or edge case.

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Related tools

These tools often appear right before or right after this workflow.