Who is Open PDF in Default PDF Reader (Instead of FF) for?

Open PDF in Default PDF Reader (Instead of FF) is a consumer product built for firefox users who prefer external PDF readers.

What platforms does Open PDF in Default PDF Reader (Instead of FF) run on?

Open PDF in Default PDF Reader (Instead of FF) runs on the web and embeddable surfaces.

Is Open PDF in Default PDF Reader (Instead of FF) still active?

Unverified. Open PDF in Default PDF Reader (Instead of FF) 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 projects are similar to Open PDF in Default PDF Reader (Instead of FF)?

Similar projects tracked by PulseGate include Hashrate Lens, SaveAI, and Codex File Drop.

Who makes Open PDF in Default PDF Reader (Instead of FF)?

Open PDF in Default PDF Reader (Instead of FF) is developed by Keven Lee.

When did Open PDF in Default PDF Reader (Instead of FF) launch?

Open PDF in Default PDF Reader (Instead of FF) first shipped in 2026.

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Open PDF in Default PDF Reader (Instead of FF)

Name: Open PDF in Default PDF Reader (Instead of FF)
Author: Keven Lee

mozilla.orgBrowser DevTools & extensions

Open PDF in Default PDF Reader (Instead of FF) is a Firefox extension that sends PDF links to the computer’s default PDF application. It supports external readers such as Acrobat, Sumatra PDF, and Preview while allowing users to keep selected links inline.

FreeWebEmbeddable

Open PDF in Default PDF Reader (Instead of FF) preview

Visit mozilla.org

Overview

5 features

In the Browser DevTools & extensions space, Open PDF in Default PDF Reader (Instead of FF) takes a focused approach. It focuses on opening PDF links in an external PDF reader instead of Firefox’s built-in viewer. It is built as a consumer product for firefox users who prefer external PDF readers. Open PDF in Default PDF Reader (Instead of FF) is free to use. It ships for the web and embeddable surfaces.

Behind Open PDF in Default PDF Reader (Instead of FF) is Keven Lee, and it first shipped in 2026. Among its 5 catalogued features are External PDF opening, default reader support, and one-click launching. The interface is available in 32 languages, including Czech, German, and Greek.

Summary written by a language model from the project’s public pages.

External PDF opening
Default reader support
One-click launching
Inline link control
PDF download handling

Built with & integrations

Runs on

BrowserEmbeddable

Trust & compliance

Verified signals

HTTPSPrivacy Policy Terms of ServiceFree tierMulti-languageStore-verified publisher

Legal

Indexing history

What PulseGate has recorded for this listing

Indexed9 Sept · 22:34 UTC
Open PDF in Default PDF Reader (Instead of FF) verified via Firefox Add-ons
Source: Firefox Add-ons · Open

Frequently asked questions about Open PDF in Default PDF Reader (Instead of FF)

What does Open PDF in Default PDF Reader (Instead of FF) do?: Open PDF in Default PDF Reader (Instead of FF) focuses on opening PDF links in an external PDF reader instead of Firefox’s built-in viewer. It is catalogued under Browser DevTools & extensions on PulseGate.
Who is Open PDF in Default PDF Reader (Instead of FF) for?: Open PDF in Default PDF Reader (Instead of FF) is a consumer product built for firefox users who prefer external PDF readers.
Does Open PDF in Default PDF Reader (Instead of FF) have a free plan?: Yes — Open PDF in Default PDF Reader (Instead of FF) is free to use.
What platforms does Open PDF in Default PDF Reader (Instead of FF) run on?: Open PDF in Default PDF Reader (Instead of FF) runs on the web and embeddable surfaces.
Is Open PDF in Default PDF Reader (Instead of FF) still active?: Unverified. Open PDF in Default PDF Reader (Instead of FF) 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 projects are similar to Open PDF in Default PDF Reader (Instead of FF)?: Similar projects tracked by PulseGate include Hashrate Lens, SaveAI, and Codex File Drop.Hashrate Lens SaveAI Codex File Drop
Who makes Open PDF in Default PDF Reader (Instead of FF)?: Open PDF in Default PDF Reader (Instead of FF) is developed by Keven Lee.
When did Open PDF in Default PDF Reader (Instead of FF) launch?: Open PDF in Default PDF Reader (Instead of FF) first shipped in 2026.

At a glance

Pricing: Free
Platforms: Web
First seen: 9 Sept 2026
Built for: Firefox users who prefer external PDF readers
Model: B2C
Solves: Opening PDF links in an external PDF reader instead of Firefox’s built-in viewer.

Registered as

Firefox Add-ons: open-ff

Developer

Keven Lee

Index record

Indexed: 9 Sept 2026
Lifecycle: Alive
First seen: Sept 2026
Last seen: 9 Sept 2026

Identity audit (13)

Slug: open-pdf-in-default-pdf-reader-instead-of-ff-mozilla-org
Lifecycle state recorded: 9 Sept 2026
Verification state: Indexed for public listing
Listing state: Listed: yes
Index status: Included in index
Latest evidence snapshot: 9 Sept 2026
Timeline basis: Indexed-at chronology (no inferred launch/funding milestones).
Name from: Derived from the project's own page and URL.
Category from: Assigned by a language model.
Summary from: Written by a language model from public pages.
Languages from: Detected by a language model, checked against the page's own declaration.
Last updated: 9 Sept 2026
Canonical URL: https://addons.mozilla.org/en-US/firefox/addon/open-ff

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