Who should use Theme Font & Size Changer?

Theme Font & Size Changer is a consumer product built for firefox users with visual impairments or readability needs.

Does Theme Font & Size Changer have a free plan?

Yes — Theme Font & Size Changer is free to use.

What platforms does Theme Font & Size Changer run on?

Theme Font & Size Changer runs on the web, embeddable surfaces, macOS, Windows, and Linux.

Is Theme Font & Size Changer still active?

Unverified. Theme Font & Size Changer 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 Theme Font & Size Changer?

Similar projects tracked by PulseGate include Hashrate Lens, Mermaid Visualizer, and NBA-Boxscore.

Who develops Theme Font & Size Changer?

Theme Font & Size Changer is developed by Baris Derin.

How long has Theme Font & Size Changer been around?

Theme Font & Size Changer first shipped in 2010.

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Theme Font & Size Changer

Name: Theme Font & Size Changer
Author: Baris Derin

barisderin.comBrowser DevTools & extensions

Theme Font & Size Changer is a Firefox add-on that changes the global font size and font family across browser windows, menus, toolbars, and other interface elements. It provides controls through the add-on bar, toolbar button, and Tools menu, with settings saved across sessions.

FreeWebEmbeddablemacOSWindowsLinux

Visit barisderin.com

Overview

7 features

In the Browser DevTools & extensions space, Theme Font & Size Changer takes a focused approach. It focuses on changing Firefox interface text size and font family for accessibility and improved readability on high-resolution displays. It is built as a consumer product for firefox users with visual impairments or readability needs. Theme Font & Size Changer costs nothing to use. It runs on the web, embeddable surfaces, macOS, Windows, and Linux.

It is developed by Baris Derin, and it first shipped in 2010. Among its 7 catalogued features are global font sizing, font family selection, and toolbar controls.

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

Global font sizing
Font family selection
Toolbar controls
Tools menu controls
Add-on bar button
Persistent settings
Firefox theme support

Built with & integrations

Framework

WordPress

Runs on

BrowserEmbeddablemacOSWindowsLinux

Detected from

WordPress: /wp-content/ in the HTML · /wp-includes/ in the HTML

Trust & compliance

Verified signals

HTTPSFree tierStore-verified publisher

Indexing history

What PulseGate has recorded for this listing

Indexed8 Sept · 04:54 UTC
Theme Font & Size Changer verified via Firefox Add-ons
Source: Firefox Add-ons · Open

Frequently asked questions about Theme Font & Size Changer

What does Theme Font & Size Changer do?: Theme Font & Size Changer focuses on changing Firefox interface text size and font family for accessibility and improved readability on high-resolution displays. It is catalogued under Browser DevTools & extensions on PulseGate.
Who should use Theme Font & Size Changer?: Theme Font & Size Changer is a consumer product built for firefox users with visual impairments or readability needs.
Does Theme Font & Size Changer have a free plan?: Yes — Theme Font & Size Changer is free to use.
What platforms does Theme Font & Size Changer run on?: Theme Font & Size Changer runs on the web, embeddable surfaces, macOS, Windows, and Linux.
Is Theme Font & Size Changer still active?: Unverified. Theme Font & Size Changer 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 Theme Font & Size Changer?: Similar projects tracked by PulseGate include Hashrate Lens, Mermaid Visualizer, and NBA-Boxscore.Hashrate Lens Mermaid Visualizer NBA-Boxscore
Who develops Theme Font & Size Changer?: Theme Font & Size Changer is developed by Baris Derin.
How long has Theme Font & Size Changer been around?: Theme Font & Size Changer first shipped in 2010.

At a glance

Platforms: Web
Languages: English
First seen: 8 Sept 2026
Built for: Firefox users with visual impairments or readability needs
Model: B2C
Solves: Changing Firefox interface text size and font family for accessibility and improved readability on high-resolution displays.

Registered as

Firefox Add-ons: open-with-photoshop
Firefox Add-ons: reader
Firefox Add-ons: theme-font-size-changer
Firefox Add-ons: toggle-web-developer-toolbar
Firefox Add-ons: wordpress-toolbar
Firefox Add-ons: youtube-high-definition

Developer

Baris Derin

Index record

Indexed: 8 Sept 2026
Lifecycle: Alive
First seen: Sept 2026
Last seen: 8 Sept 2026

Identity audit (13)

Slug: theme-font-size-changer-barisderin-com
Lifecycle state recorded: 8 Sept 2026
Verification state: Indexed for public listing
Listing state: Listed: yes
Index status: Included in index
Latest evidence snapshot: 8 Sept 2026
Timeline basis: Indexed-at chronology (no inferred launch/funding milestones).
Name from: Written by a language model from the project's public pages.
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: 8 Sept 2026
Canonical URL: https://barisderin.com/?p=286

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