Add want: I want an option to invert the colors of any web page (issue #649)

wants/c5b76548-88e4-4ce1-aa6e-762e9188a2d0.md

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+---
+title: I want an option to invert the colors of any web page
+date: 2026-04-14T21:29:38.355Z
+submitter: Diego Martín Álvarez
+number: c5b76548-88e4-4ce1-aa6e-762e9188a2d0
+tags: [accessibility, css, ux]
+discussion: https://github.com/WebWeWant/webwewant.fyi/issues/649
+status: discussing
+related:
+  - title: "CSS filter: invert() (MDN)"
+    url: https://developer.mozilla.org/en-US/docs/Web/CSS/filter-function/invert
+    type: article
+  - title: "prefers-color-scheme media feature (MDN)"
+    url: https://developer.mozilla.org/en-US/docs/Web/CSS/@media/prefers-color-scheme
+    type: article
+  - title: "Understanding Success Criterion 1.4.3: Contrast (Minimum) (WCAG 2.1)"
+    url: https://www.w3.org/WAI/WCAG21/Understanding/contrast-minimum.html
+    type: spec
+---
+
+I want browsers to provide a built-in control to invert the colors of the currently active web page. A readily accessible option — such as a toolbar icon or a keyboard shortcut — would let me flip the color scheme of any page instantly, without requiring a browser extension or an operating-system-level inversion that affects every application at once.
+
+This would be particularly useful when reading pages that display small, dark text on bright white backgrounds, a combination that can cause eye strain during extended reading sessions. More broadly, per-page color inversion would benefit a wide range of users:
+
+- **Readability:** High-contrast inverted views can make text easier to parse for many readers.
+- **Eye care:** Reducing bright white backgrounds lowers visual fatigue, especially in low-light environments.
+- **Accessibility:** People with certain visual impairments — including photosensitivity and contrast sensitivity conditions — often rely on inverted or high-contrast display modes.
+- **Older users:** Elderly users who find standard contrast levels uncomfortable would gain a simple, discoverable option without needing third-party tools.
+- **Energy saving:** On OLED and AMOLED screens, darker pixels consume less power, so inverted pages can extend battery life.
+
+The CSS `invert()` filter function already demonstrates that browsers can render inverted colors at the rendering layer. A native browser control would expose this capability to all users in a consistent, accessible way — complementing existing features like `prefers-color-scheme` and operating-system dark-mode settings — without placing the implementation burden on individual web authors.