Privacy Policy

HPD is designed to respect your privacy. By default, nothing you submit is stored. This page explains clearly and completely what happens to your data at every step.

ℹ️ Short version: your packet data is processed in real time and immediately discarded — unless you explicitly use the Share packet feature.

At a glance

The table below summarises the data handling for each HPD feature.

Feature Data stored? Retention
Hex input / manual decode No Never written to disk. Processed in memory only.
pcap file upload Temporarily Auto-deleted after 24 hours. You can delete it immediately with Reset.
Share packet Yes — explicit Stored until 1 year of inactivity, then automatically deleted.
API calls No Never written to disk. Processed in memory only.

Default behaviour: no data retention

When you paste a hex string into HPD and press Decode, your packet data travels to the server solely to be parsed — it is never written to disk, never stored in a database, and never associated with your identity. The moment the response is sent back to your browser, the data is gone from the server.

The same applies to API calls: the hex payload you submit is processed in memory and immediately discarded after the response is generated.

✅ No account, no login, and no tracking cookies are used. Your packet data is never sold, shared, or used for any purpose other than producing the decode result you requested.

pcap file uploads

When you upload a .pcap or .pcapng file, HPD needs to keep it on the server temporarily so you can navigate between packets during your session. This temporary file is handled with care:

🔒
Private by design
Your file is stored under a randomly generated, unguessable identifier. Only someone who knows that exact identifier can access it.
⏱️
Auto-deleted after 24 h
If you close your browser or simply navigate away, the file is automatically removed from the server within 24 hours.
🗑️
Delete it yourself instantly
Click the Reset button at any time to permanently and immediately delete your uploaded file from the server.

How to delete your file immediately

While a pcap file is loaded, a Reset button is visible in the toolbar. Clicking it sends a deletion request to the server, which permanently removes your file right away — no waiting, no residual copy. You are then returned to the standard manual-input view.

⚠️ Please avoid uploading pcap files that contain sensitive personal data (passwords, private keys, confidential communications). Although the file is temporary and private, best practice is to anonymise captures before sharing them with any online tool.

Share packet — the only case of persistent storage

The Share packet feature is the only situation where HPD deliberately stores data for an extended period. This storage is always intentional and explicit: it only happens when you click the Share button.

When you share a packet, the raw hex string you are currently viewing is saved on the server and assigned a short, random identifier (e.g. a3f8c2d1). A permanent link is generated and copied to your clipboard: 

https://hpd.gasmi.net/?s=a3f8c2d1

Anyone who has this link can view the shared packet, decoded exactly as you saw it.

Retention & expiry

Shared packets are kept as long as they are being visited. A shared packet that has not been accessed for one year is automatically and permanently deleted. No manual action is required on your part.

What is stored

✅ Only share packets that you are comfortable making accessible to anyone with the link. The link is not listed or indexed anywhere by HPD, but it is technically accessible to anyone who obtains it.

Server logs

Like any standard web server, HPD's hosting infrastructure records basic HTTP access logs (IP address, timestamp, URL path, HTTP status code). These logs are used solely for operational purposes — debugging errors and monitoring server health — and are not used to profile users or correlate activity with packet content. Logs are rotated and deleted on a regular basis.

HPD does not use analytics trackers, advertising networks, or any third-party data-collection services.

Questions & contact

If you have any questions about how your data is handled, or if you would like to request the immediate deletion of a shared packet you created, please reach out:

HPD by Salim Gasmi — packet decoding powered by Wireshark / tshark — hpd.gasmi.net