AI Chat Tuner

by kneokim · Tools

Manifest V3 Free

View in Chrome Web Store Data as of 21 Oct 2026

Adjust chat width, font size, font family and line height for Claude, ChatGPT and Gemini in one place

Users

+7 in 30 days

Rating

0.0 / 5

unchanged in 30 days

Ratings

0 in 30 days

Store rank

#158K

#132K among extensions

Version

1.5.1

updated 6 Sep 2026

Users

monthly, 2 months

Latest, 21 Oct 2026: 19 usersMove the mouse over the chart for any month

Ratings count

monthly, 2 months

Latest, 21 Oct 2026: 0 ratingsMove the mouse over the chart for any month

The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.

About AI Chat Tuner

Using more than one AI chat tool? Skip installing a separate widescreen or font extension for every site — AI Chat Tuner adjusts Claude, ChatGPT and Gemini from a single popup. Features - Chat width — px (600–2000) or % of the screen (40–100) - Text zoom (70–150%) — body, headings, code and tables scale together, like browser zoom - Font family — presets (Pretendard, Noto Sans KR, Malgun Gothic, …) or custom - Line height (1.2–2.2) - One common setting for all three sites, with per-site overrides - Per-option toggles — only enabled options are applied - Applies instantly, no reload; settings sync via your Chrome account - 7 languages (한국어, English, 日本語, 简体中文, Español, Français, Deutsch) Privacy: this extension collects no data. Settings are stored only in Chrome's sync storage. Claude, ChatGPT and Gemini are trademarks of their respective owners. This is an unofficial tool and is not affiliated with Anthropic, OpenAI or Google.