TLS Lens
TLS Lens is a Firefox extension that summarizes the security of the current website connection, including certificate issuer, domain coverage, validity, TLS version, encryption, and certificate transparency. It presents technical findings in plain language with color-coded warnings for general Firefox users.
Overview
8 featuresIn the Browser DevTools & extensions space, TLS Lens takes a focused approach. It focuses on understanding whether a website connection and TLS certificate are secure without inspecting technical browser dialogs. TLS Lens is a consumer product aimed at firefox users who want to verify website connection security. TLS Lens costs nothing to use. It runs on the web and embeddable surfaces.
It is developed by Marco Appoldt, and it first shipped in 2026. Among its 8 catalogued features are certificate summaries, validity countdown, and TLS version checks. The interface is available in 32 languages, including Czech, German, and Greek.
Summary written by a language model from the project’s public pages.
- Certificate summaries
- Validity countdown
- TLS version checks
- Cipher checks
- Certificate warnings
- Plain-language explanations
- Certificate transparency checks
- Technical details
Built with & integrations
Trust & compliance
Indexing history
1What PulseGate has recorded for this listing
Frequently asked questions about TLS Lens
- What is TLS Lens?
- TLS Lens focuses on understanding whether a website connection and TLS certificate are secure without inspecting technical browser dialogs. It is catalogued under Browser DevTools & extensions on PulseGate.
- Who is TLS Lens for?
- TLS Lens is a consumer product built for firefox users who want to verify website connection security.
- Is TLS Lens free?
- Yes — TLS Lens is free to use.
- What platforms does TLS Lens run on?
- TLS Lens runs on the web and embeddable surfaces.
- Is TLS Lens still maintained?
- Unverified. TLS Lens has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.
- What are alternatives to TLS Lens?
- Similar projects tracked by PulseGate include TLS Check, Certificate Trust, and IndicateTLS.TLS CheckCertificate TrustIndicateTLS
- Who develops TLS Lens?
- TLS Lens is developed by Marco Appoldt.
- How long has TLS Lens been around?
- TLS Lens first shipped in 2026.
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