PluginStats
SignBridge users statistics
Chrome Web Store · Developer Tools
Generic Web HSM Signing Protocol Adapter
SignBridge has approximately 725 recorded users on Chrome Web Store.
It ranks #862 of 2,033 tracked Chrome Web Store listings by users.
It is rated 5.0 out of 5 from 1 ratings.
PluginStats has 1 daily observations since Oct 19, 2026; the latest is from Oct 19, 2026.
Rating: 5.00 / 5 from 1 ratings
About SignBridge
Generic Web HSM Signing Protocol Adapter
SignBridge is a browser extension that implements the Generic Web HSM Signing Protocol, enabling web applications to securely sign PDF documents using hardware security modules (HSM), smartcards, and USB tokens via the PKCS#11 standard.
Here you can download the native host: https://github.com/ASE-Bucure-ti/SignBridge
Here you can test different web flows scenarios: https://signbridge.ase.ro
How it works: SignBridge acts as a bridge between web applications and a lightweight native host application installed on your computer. When a web app requests a document signature, the extension relays the request to the native host, which interfaces with your PKCS#11-compatible hardware (e.g., SafeNet eToken, Gemalto, YubiKey, or any PKCS#11 device) to perform the cryptographic signing operation locally. Private keys never leave your hardware device.
Key features: • Standards-based — implements the open Generic Web HSM Signing Protocol v1.0 developed internally • Works with any PKCS#11-compatible hardware token, smartcard, or HSM • Supports single and batch PDF signing workflows • Visible and invisible digital signatures with customizable appearance • PAdES B-B and B-T signature profiles with optional timestamping • All cryptographic operations happen locally — private keys never leave the hardware device • No user data is collected, transmitted, or stored by the extension
Requirements: • The SignBridge native host application must be installed on your computer • A PKCS#11-compatible hardware device (smartcard, USB token, or HSM) with its vendor drivers installed
For developers: SignBridge is designed for seamless integration. Web applications communicate with the extension via standard DOM events (postMessage). A lightweight JavaScript SDK is available for easy integration into any web application. Visit the project documentation for the protocol specification and integration guide.
Privacy: This extension does not collect, store, or transmit any personal data. It only relays signing requests between the web page and the locally installed native host application. All cryptographic operations are performed entirely on your local machine.
Description from the Chrome Web Store listing.
Where SignBridge sits in the listing
Each band is one page of 20. Users on a log scale. Placement is projected from users, so it can differ from the marketplace's own sort order. Hover a dot to see the listing.
Charts
Images: 30d · 1y · all time · 1600×900 dark
Adoption over time
7/30/90-day growth
Filled points are observed values; hollow points come from Internet Archive snapshots of the listing page. Dashed segments span periods with no observations — values between points are not interpolated.
Recent observations
Full history (1)Similar Chrome Web Store Developer Tools plugins
Data source
User counts are read from public Chrome Web Store listing pages. Google displays rounded user counts (and caps the display at 10,000,000+), so small changes may not be visible. Rating counts above 1,000 are rounded (e.g. 1.6K).
Listing: https://chromewebstore.google.com/detail/signbridge/hjfiglgfjnfceahiccedeimkgabclkpc. First seen Oct 19, 2026; last successful collection Oct 19, 2026. See the methodology.