Local Page Editor is a Firefox extension that lets users edit visible webpage text, input values, and simple HTML locally. It saves rules using exact URL, domain, or path-prefix matching and reapplies them after refreshes or dynamic page updates.
In the Browser DevTools & extensions space, Local Page Editor takes a focused approach. It focuses on changing webpage content locally and persistently for customization, mock-ups, and testing. It is built as a consumer product for firefox users, designers, and developers testing webpage variations. It is available for free. Local Page Editor is available on the web, embeddable surfaces, and Android.
LAFL(4xU)R builds and maintains Local Page Editor, and it first shipped in 2026. Key capabilities include edit mode, text replacement, and input editing. The interface is available in 32 languages, including Czech, German, and Greek.
Summary written by a language model from the project’s public pages.
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