Force software rendering (SwiftShader) in Playwright Chromium to eliminate image downscaling drift between GPU-equipped local runs and headless CI runs in Argos screenshots.
Assistant: the "Explored briefly" activity heading no longer appears when there's nothing to show. It now renders only when the answer is preceded by a real preamble or one or more tool calls, so a simple answer with an empty reasoning step no longer surfaces an empty collapsible.
Show the theme toggle in the footer whenever the outline column that hosts the other toggle isn't pinned open, so it stays reachable on laptop-sized screens in wide layouts and while the AI chat is open.
Fix the Docs Embed widget rendering with a dark surface when the visitor's OS is in dark mode, even on a light page or a site published with a light theme. The embed script now accepts `?theme=light|dark` to force a scheme.
Make the Docs Embed widget match the page it is embedded in rather than the visitor's OS: a widget on a light page stays light even when the visitor's system is in dark mode, and the widget's own chrome and the docs inside it always render in the same scheme. Sites published with a single theme impose it on the widget too, since they render in it regardless. The standalone script takes `?theme=light` on its URL, and calling `init` twice now updates the options instead of throwing.
Introduce client-side content selection (`select`): a site-wide, recency-ordered list of selected slugs, persisted in localStorage and shareable via `?select=`, applied to `<html>` before first paint so the right variant renders with no flash. All variants stay server-rendered, so pages are byte-identical for every visitor (no cache impact).
Tabs now use it: switching a tab activates its slug, and every tab group offering that slug follows, across pages. Tabs no longer write to the URL fragment (`#` returns to anchors only); deep-links into a tab still activate and scroll to it.
Skip internal paths (`~gitbook/*`, `.well-known/oauth-protected-resource`, `llms.txt`, `robots.txt`, `sitemap.xml`, `rss.xml`) when building URL lookup alternatives, to avoid resolving URLs that can never match content.
Self-host default Google fonts and inline only the @font-face rules of the fonts a site uses, instead of shipping render-blocking stylesheets covering all 23 families on every page.
Add an optional `context` property (string, up to 512 characters) to the `confirmation` of custom AI tools, shown above the confirmation dialog to help the user understand what they are approving or rejecting. The `confirmation` can now also be a function that receives the AI-provided input and returns the confirmation, so the context can be derived dynamically from the arguments the tool is about to run with. Available both to integrations (`GitBookIntegrationTool`) and to embed consumers (`GitBookToolDefinition`).
Lazy load the Scalar API client modal and stop preloading the Scalar runtime. The modal is now code-split into its own chunk, fetched in parallel with the runtime only when a reader clicks "Test it", and a spinner is shown on the button until the client opens.
Breaking: the package no longer ships the modal in its main entry — consumers must serve the emitted `ScalarApiModal` chunk and use a bundler that supports dynamic `import()`, and the Scalar runtime is no longer preloaded on page load. The internal `preloadScalarRuntime` helper is removed.
Stop preloading the zoom-modal variant of every zoomable image at render time; it downloaded each image twice during the initial page load. The modal image still loads on hover or click.
Fix the page-actions dropdown closing before the "Copied" confirmation could be shown when copying the MCP server URL, an MCP install command, or the page as Markdown.
Submit `sendFeedback` MCP tool findings through the dedicated `submitSiteAgentFeedback` API endpoint. The `pageUrl` is now required and an optional `goal` can be provided.
Mermaid diagrams no longer hijack page scrolling: zooming with the wheel now requires holding Ctrl/Cmd inline, while the fullscreen view keeps free wheel zoom.
Persist content selection (tabs and other `select` blocks) in localStorage only, dropping the `?select=` query parameter from the URL. A tab click still writes the tab's hash, so a copied URL lands on that tab and reactivates it on load.
Serve `X-Robots-Tag: noindex` on internal search/assistant URLs (`?q=` / `?ask=`) and stop disallowing them in robots.txt, so Google can crawl the directive and drop them from the index instead of reporting "Indexed, though blocked by robots.txt".
Add an "On this page" table of contents on OpenAPI models pages. Each model in a grouped/multi-model "Models" section is now listed as its own section, matching operations and webhooks.
Keep the OpenAPI renderer out of the initial bundle of pages that have no OpenAPI block, by building its context on the client behind a dynamic boundary.
Move paragraph block styles behind a single `paragraph` class and drop the `page-cover-background:` gate from the cover-contrast text. The gate combined with the per-paragraph `:not(:has(...))` made every DOM insertion re-style all paragraphs, which froze very long pages.
Inject site tracking scripts (analytics integrations) after `load` + idle instead of preloading them and executing them during the critical loading window.
Reduce the JavaScript and CSS loaded on published site pages: the search index and its UI now load only when search is opened, and the admin toolbar and OpenAPI/ContentKit styles are no longer shipped to every visitor.
Fail closed in `/~gitbook/revalidate` when `GITBOOK_SECRET` is not configured, returning `403 Revalidation is disabled` instead of skipping the signature check, consistent with `force-revalidate`.
Fix the docs embed not applying `?theme=light`/`?theme=dark`. The theme was dropped when the embed redirected to its default tab, and the embed tabs couldn't read it because they render statically (their request headers are empty). The middleware now threads a forced embed theme through the embed route context (scoped to the embed, not the main site), so the embed tabs honor it while staying statically rendered, and the redirect forwards it to the default tab. The forced theme is also persisted to the embed's own theme storage so it is remembered across tab navigation instead of only applying while the query string is present.
Fix code block syntax highlighting so comment delimiters (e.g. `//`, `/*`) use the same color as the rest of the comment. Previously the delimiter fell through to the generic punctuation scope, making it a different color from the comment body (most visible in dark mode).
Keep Shiki out of the initial page bundle by splitting the highlighter from the plain-text token helpers, so client code no longer pulls the engine and language bundles in through a shared import.
Split the default-scope site search into two parallel API requests — one restricted to the current site space and one for the other site spaces — rendering each result set as soon as its response arrives. All results are ranked together by score, with the current site space scores boosted.
Fix heading anchor links being unreachable on touch devices by adding a tap-to-reveal state. The anchor icon now appears after the heading text without wrapping onto an orphan line while retaining its existing desktop placement. Use `pointerup` for the dismiss listener to fix unreliable dismissal on iOS Safari, and enlarge the anchor's touch tap target to a square 24px area (meeting the WCAG 2.5.8 minimum) so the icon stays centered instead of overflowing shorter headings' line height.
Fix chevrons and open-state styling incorrectly reacting to a tooltip opening on the same trigger, by switching from the shared Base UI `data-popup-open` attribute to `aria-expanded`.
Expose the current page (`id`, `path`, `title`) to integration block webframes through the client-only webframe `state.page`, alongside adaptive visitor claims.
Only track embed view events once the frame is actually shown to the reader
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Nicolas Dorseuil