JK Vim-Style Page/Tab Navigation

Vim keys on every page: j/k scroll, gg/G, f link hints, H/L history, Shift+J/K switch tabs. Works in any keyboard layout.

JK Vim-Style Page/Tab Navigation (jk-nav) adds Vim-style keyboard navigation to every page and to the tab strip, in Chrome and Firefox, from one codebase. KEYS - j / k: scroll down / up by one step. Hold the key to keep scrolling; release to stop. - gg / G: go to the top / bottom of the page. - H / L: go back / forward in history. - f: show a two-character hint beside up to 900 visible links, buttons and form fields. Type the hint to activate it. Esc leaves hint mode. - Shift+J / Shift+K: switch to the tab on the left / right. Wraps at both ends, skips hidden tabs and, in Chrome and Firefox 139 or newer, tabs in collapsed tab groups. Stays in the current window. PERFORMANCE jk-nav is built to stay out of your way: - Page load: the content script starts at document_start and adds about 2 ms to the load event of a page with 3,000 links (benchmark in Chromium, 20 runs). - Scrolling: j and k move the page in the same frame as the key press. A second press reacts in about 2 ms. - Link hints: f draws hints for 900 visible targets on a 3,000-link page in about 7 ms. - No background work: nothing runs between key presses, and no network, analytics or remote code. Method and raw numbers: https://github.com/Seigiard/jk-nav/blob/main/docs/bench/README.md HIGHLIGHTS - Added Tab switching with Shift+J / Shift+K alongside the page keys. - Keys work in every keyboard layout. They are matched by physical key position, so Russian, German or any other layout behaves like QWERTY, and Caps Lock changes nothing. - Typing stays yours: in text fields, text areas, drop-downs, editable content and during IME composition, the keys type text as usual, also inside web components. After you click a button, checkbox or slider, the keys keep working. - Link hints that behave: f does nothing on a page with no targets, a wrong first key just closes the hints, and very large pages no longer break hint mode. - Smooth scrolling: every j / k step is animated, and holding the key scrolls continuously. - Shortcuts with Ctrl, Alt or Meta pass through, so Ctrl+F still opens the find bar. PRIVACY jk-nav collects no data, makes no network requests and runs no remote code. Its only API permission is tabGroups, used to skip collapsed tab groups when switching tabs. Privacy policy: https://github.com/Seigiard/jk-nav/blob/main/PRIVACY.md KNOWN LIMITATIONS - Browser pages (chrome://, about:, the extension stores, built-in PDF viewers) do not allow extensions, so no key works there. A tab switch can still land on one; leave it with the browser's own shortcut. - Sites with their own j / k shortcuts (Gmail, GitHub, X) conflict with jk-nav while you are not typing. ORIGIN jk-nav is a fork of "Vim-Style Page Navigation" by Johnny Matthews (https://github.com/johnnymatthews/vim-style-page-navigation), published on AMO as "Simple Vim Scrolling". The fork adds tab switching, makes the keys work in every keyboard layout, and fixes scrolling, Ctrl+F and typing detection; the same changes are proposed upstream in https://github.com/johnnymatthews/vim-style-page-navigation/pull/1. Every key of the original keeps its meaning. Source code: https://github.com/Seigiard/jk-nav (MIT).