Open TSD files in your browser
A file kept with the timestamps that prove when it existed, often a signed P7M. See them and open what's inside, right here. Nothing leaves your device.
Or drop it anywhere on this page
What you'll see
Your signed file opens as who signed it and when, each check listed, then the file inside.
- Who signed • Checked against the roots Filepeek carries
- When • Its timestamp and the authority behind it
- The file inside opens in its own viewer
- Every check listed • Nothing asked of a CA
About TSD
TSD is the IETF's format for a file and its timestamps together, set out in RFC 5544 in 2009. Italian signing apps save contract.pdf.p7m.tsd when they stamp a signed file, and a TSD can hold any file.
Each timestamp comes from a time stamping authority, which signs the file's hash with the moment it saw it. Kept with a signature, it proves the signature was made while the signer's certificate was valid.
Filepeek checks each timestamp against the file it holds and the roots it carries, then the signature of a P7M inside, and opens the file in its own viewer. A FatturaPA invoice is laid out as an invoice.
Timestamped data
.tsd
Format
- MIME type
- application/timestamped-data
- Made by
- The IETF
- Released
- 2009
Inside the file
- Holds
- A file and its timestamps
- Proves
- When the file existed
- Standard
- RFC 5544
- Often
- A signed P7M inside
Opens in every browser
Browsers download TSD files, and few apps open them. Filepeek checks its timestamps and opens the file inside in Chrome, Edge, Firefox and Safari.
- YouChromeOpens through Filepeek
- YouEdgeOpens through Filepeek
- YouFirefoxOpens through Filepeek
- YouSafariOpens through Filepeek
Questions
How do I open a TSD file?
Drop it on this page or press Peek a TSD. Its timestamps show with who issued them, and the file inside opens in its own viewer.
What's in a .p7m.tsd?
A signed P7M and its timestamp. Filepeek checks both, then opens the signed file, an invoice laid out as an invoice.
Who issues the timestamps?
A time stamping authority, in Europe often a qualified one. Its name and its certificate's chain show with each timestamp.
Is my file uploaded?
No. The file opens inside your browser and never leaves your device.