Firefox ESR 140.12

Firefox Extended Support Release

Source: mozilla.org

Release	Date	Hash	Show all revisions
140.12	Jun 18, 2026	ef1724e617fd4f3c
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Developer: mozilla.org/en-US/firefox/organizations

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140.12 updated 17 days ago
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.avif .htm .html .oga .ogg .ogv .pdf .shtml .svg .webm .webp .xht .xhtml