View P7B files in your browser
The bundle a CA hands out with a certificate and the chain above it. See each one and how they link, right here. Nothing leaves your device.
Or drop it anywhere on this page
What you'll see
Your certificate opens as a card: who it's for, who issued it, its dates and its chain.
- Its chain • Checked against the roots Filepeek carries
- Valid from and until • The days it has
- Every name it covers • Domains and emails
- SHA-256 and SHA-1 fingerprints • Copy with a click
About P7B
A P7B is a PKCS #7 envelope of certificates with no signature, a way to hand out several at once. CAs send a server's certificate with its intermediates as a .p7b, Windows exports chains this way, and the US government publishes its CAs as .p7c. An .spc, Microsoft's Software Publisher Certificate, is the same bundle for signing code.
The certificates come in any order, and the bundle doesn't say which one the others vouch for.
Filepeek puts them in chain order, the certificate first and then the CAs that issued it, each on a block of its own with its subject, issuer, dates, key and fingerprints, and checks the chain against the roots it carries.
PKCS #7 certificate bundle
.p7b • .p7c • .spc
Format
- MIME type
- application/x-pkcs7-certificates
- Made by
- RSA Laboratories
- Released
- 1993
Inside the file
- Holds
- Certificates, in any order
- Signed
- No, only a bundle
- Encoding
- DER, or base64 text
- Standard
- PKCS #7 and CMS
Opens in every browser
Browsers download P7B files. Filepeek lists the certificates in Chrome, Edge, Firefox and Safari, without installing them.
- YouChromeOpens through Filepeek
- YouEdgeOpens through Filepeek
- YouFirefoxOpens through Filepeek
- YouSafariOpens through Filepeek
Questions
How do I see the certificates in a P7B?
Drop it on this page or press Peek a P7B. Each certificate shows with its names and dates, joined to the one that issued it.
Which certificate is mine?
The one no other in the bundle names as its issuer. Filepeek names the card after it, puts it first and marks the CAs and the root.
Can I open a .p7c or an .spc?
Yes. Both are the same bundle under other names, and open the same way.
Is my file uploaded?
No. The file opens inside your browser and never leaves your device.