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feat: reduce StaticText noise in text snapshots - #2895
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Follow-up to ChromeDevTools#2895 (stacked on top of it). Removes more redundancy from text a11y snapshots in `SnapshotFormatter`: 1. **Skip text children that only repeat the parent name (non-verbose only).** Generalizes the single-child rule from ChromeDevTools#2895: if all children of a named node are leaf `StaticText` nodes and their combined text equals the parent name (ignoring whitespace), they are not printed. Kept in verbose mode, if any child is not a leaf text node, or if a child is the element selected in the DevTools Elements panel. Their uids remain valid. 2. **Omit `value` on options when it equals the name.** `TextSnapshot` copies an option's name into `value`, so it is always redundant in that case. A differing `value` is still printed. 3. **Omit `selectable` on options.** Implied by the role; `selected` is still printed. JSON snapshot output is unchanged. Before: ``` uid=1_4 link "English 7,245,000+ articles" url="https://en.wikipedia.org/" uid=1_5 "English" uid=1_6 "7,245,000+ " uid=1_7 "articles" ... uid=1_66 option "English" selectable selected value="English" uid=1_67 option "Español" selectable value="Español" ``` After: ``` uid=1_4 link "English 7,245,000+ articles" url="https://en.wikipedia.org/" ... uid=1_66 option "English" selected uid=1_67 option "Español" ``` ## Measurement `take_snapshot` via the CLI on https://www.wikipedia.org (non-verbose), compared to ChromeDevTools#2895: | Metric | Before (ChromeDevTools#2895) | After | Δ | | ----------------- | -------------- | ----- | ---------------- | | Lines | 182 | 128 | −54 (−29.7%) | | Characters | 11,337 | 7,412 | −3,925 (−34.6%) | | ~Tokens (chars/4) | ~2,834 | ~1,853| ~−981 | Compared to `main` (12,401 chars), ChromeDevTools#2895 and this PR together reduce the snapshot by 40.2%.
OrKoN
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Oct 15, 2026
🤖 I have created a release *beep* *boop* --- ## [1.11.0](chrome-devtools-mcp-v1.10.1...chrome-devtools-mcp-v1.11.0) (2026-10-15) ### 🎉 Features * add --file-navigations flag to reject file: URL navigations ([#2853](#2853)) ([54cae57](54cae57)) * Add analyze_heapsnapshot_contexts MCP tool ([#2791](#2791)) ([190aeee](190aeee)) * add ignoreCache option to performance_start_trace ([#2931](#2931)) ([3467d40](3467d40)) * add maxNameLength truncation option to compare_heapsnapshots ([#3098](#3098)) ([1e1c53e](1e1c53e)) * Add pagination to compare_heapsnapshots ([#3140](#3140)) ([daebfd1](daebfd1)) * **config:** add ConfigWatcher to watch config file changes ([#3139](#3139)) ([9171f77](9171f77)) * discover the config file in predefined locations ([#2876](#2876)) ([02c0112](02c0112)) * implement ffmpeg-free screencast tools enabled by default ([#3123](#3123)) ([8953ea5](8953ea5)) * reduce StaticText noise in text snapshots ([#2895](#2895)) ([4441325](4441325)) * report pages opened by input actions ([#2679](#2679)) ([28fb230](28fb230)) * resolve config defaults after merging CLI and config file ([#2849](#2849)) ([bdeb70d](bdeb70d)) * return failing audits and DOM nodes inline from lighthouse_audit ([#2930](#2930)) ([241fba5](241fba5)) * skip more redundant data in text snapshots ([#2896](#2896)) ([b2f522c](b2f522c)) * support debugging WebMCP tools in third-party developer tools ([#2900](#2900)) ([0db519f](0db519f)) * support emulating additional CSS media features ([#2929](#2929)) ([69524f0](69524f0)) * support evaluating scripts from local files ([#2606](#2606)) ([9cf47a4](9cf47a4)) * Support truncation in get_heapsnapshot_details ([#3137](#3137)) ([f827e06](f827e06)) * Truncate long names by default to 100 characters ([#2893](#2893)) ([5ddb0a3](5ddb0a3)) ### 🛠️ Fixes * account for scroll offsets in downscaled screenshots ([#2685](#2685)) ([830c693](830c693)) * allow --categoryExtensions when connecting to an existing browser ([#3041](#3041)) ([d250bc5](d250bc5)) * allow stopping the CLI if command fails ([#3088](#3088)) ([77e238e](77e238e)), closes [#2982](#2982) * avoid runtime title fetches ([#2883](#2883)) ([04195d1](04195d1)) * better config support for chrome-devtools CLI ([#2819](#2819)) ([9624e64](9624e64)) * clamp async stack trace separator repeat count ([#3035](#3035)) ([93e06ab](93e06ab)), closes [#3031](#3031) * **cli:** pass positional values starting with `-` through to tools ([#3084](#3084)) ([9de05ae](9de05ae)), closes [#2984](#2984) * **collectors:** ignore transient target errors when subscribing to service workers ([#2888](#2888)) ([551dd6c](551dd6c)) * **daemon:** bound browser shutdown and avoid watchFile timeout on stop ([#2887](#2887)) ([f3db5e7](f3db5e7)) * **daemon:** keep fallback socket in private runtime dir ([#2766](#2766)) ([871a37e](871a37e)) * **daemon:** verify process identity before treating PID file as active ([#3109](#3109)) ([b608bed](b608bed)) * do not close a healthy browser when a tool call outlasts 60s ([#3149](#3149)) ([39c7db1](39c7db1)) * ensure aggregate IDs in heap snapshots are deterministic ([#2923](#2923)) ([e918c47](e918c47)) * escape client-supplied values in McpContext logs and errors ([#2832](#2832)) ([efb0d02](efb0d02)), closes [#2831](#2831) * fail fast on tool calls stuck after a dead browser connection ([#2699](#2699)) ([2a7ef50](2a7ef50)) * harden third-party tool result serialization ([#2892](#2892)) ([4418a7b](4418a7b)) * honor explicit --allowUnrestrictedPaths=false in CLI mode ([#3040](#3040)) ([61fc362](61fc362)) * include errors in slim responses ([#3085](#3085)) ([ee38097](ee38097)) * **input:** reject multiple file paths on single-file input in upload_file ([#2995](#2995)) ([#3135](#3135)) ([e650843](e650843)) * list fresh page titles ([#3103](#3103)) ([e717082](e717082)) * **memory:** reject contradictory pagination options in take_heapsnapshot ([#3002](#3002)) ([#3131](#3131)) ([508126c](508126c)) * **network:** enforce URL policy across redirects ([#2767](#2767)) ([274cd4c](274cd4c)) * pass categoryExtensions to the target filter when connecting ([#3047](#3047)) ([4e90238](4e90238)) * **performance:** report an error when performance_stop_trace is called with no active trace ([#3001](#3001)) ([#3126](#3126)) ([e170384](e170384)) * preserve HeapSnapshotManager across browser reconnects ([#3025](#3025)) ([64388c6](64388c6)) * propagate failed responseFilePath write error instead of reporting body unavailable ([#2957](#2957)) ([#3119](#3119)) ([3cee3bd](3cee3bd)) * **pwa:** wait for initial navigation on launch and retry transient install error ([#2889](#2889)) ([63010cb](63010cb)) * record screencast at the page's device pixel size ([#3155](#3155)) ([62e2aa4](62e2aa4)) * reject --blockedUrlPattern/--allowedUrlPattern hostname regexp groups ([#2796](#2796)) ([ae0aaef](ae0aaef)) * reject JSON arrays as 3p and WebMCP tool params ([#2785](#2785)) ([c14e616](c14e616)) * reject named groups in URL patterns ([#2857](#2857)) ([5b2c6f9](5b2c6f9)) * reject non-positive --viewport dimensions ([#2781](#2781)) ([0ef528a](0ef528a)) * reject non-positive resize_page dimensions ([#2784](#2784)) ([6ab6d35](6ab6d35)) * reject unrestricted paths with an explicit workspace ([#2858](#2858)) ([45c1c6c](45c1c6c)) * report unknown page id before last-page guard in close_page ([#3042](#3042)) ([bdc7e24](bdc7e24)) * round lighthouse category scores and show unscored categories as n/a ([#2924](#2924)) ([7007680](7007680)), closes [#2915](#2915) [#2916](#2916) * set empty filePath to undefined instead of empty string ([#2836](#2836)) ([adfc1ff](adfc1ff)), closes [#2825](#2825) * surface WebMCP tool exceptions in execute_webmcp_tool ([#3107](#3107)) ([d80d22e](d80d22e)), closes [#2975](#2975) * url pattern partial ipv4 ([#2859](#2859)) ([c87d190](c87d190)) ### 📄 Documentation * clarify Antigravity MCP setup for VS Code extension ([#2855](#2855)) ([12e13ca](12e13ca)) * clarify scope of --no-javascript-evaluation ([#3100](#3100)) ([0c67cd5](0c67cd5)) * correct link to configuration ([#3086](#3086)) ([bbb1e36](bbb1e36)) * document trusted host environment in SECURITY.md ([#3125](#3125)) ([1352207](1352207)) * fix inaccurate examples in skills and CLI docs ([#2922](#2922)) ([ec372b0](ec372b0)), closes [#2906](#2906) [#2907](#2907) [#2908](#2908) [#2910](#2910) [#2912](#2912) [#2913](#2913) [#2918](#2918) [#2919](#2919) [#2920](#2920) [#2921](#2921) * fix some reported issues ([#3099](#3099)) ([d5d2f08](d5d2f08)) * include serviceWorkerId parameter for evaluate_script ([#3015](#3015)) ([#3129](#3129)) ([0623434](0623434)) * mention heapsnapshot being cached between runs ([#3045](#3045)) ([f08dbe1](f08dbe1)), closes [#2976](#2976) * **skills:** remove invalid outputDir flag from lighthouse_audit calls ([#3013](#3013)) ([#3130](#3130)) ([7754226](7754226)) * update documentation and SKILL for get_css_styles tool ([#2824](#2824)) ([3c12a91](3c12a91)) ### ⚡ Performance * **cli:** re-use MCPServer.from helpers for daemon ([#2804](#2804)) ([89eb3d5](89eb3d5)) * Load heap snapshots in parallel in compare_heapsnapshots ([#3023](#3023)) ([20c1391](20c1391)) ### 🏗️ Refactor * centralize config defaults and conflict checks ([#2753](#2753)) ([a739ba8](a739ba8)) * create all tools and register per slim mode ([#2874](#2874)) ([99847a7](99847a7)) * enable categories by default ([#2811](#2811)) ([e33ee48](e33ee48)) * extract CLI examples and conflict list in mcp-options ([#2848](#2848)) ([45000d9](45000d9)) * extract config parsing logic in a class ([#2861](#2861)) ([e4168d0](e4168d0)) * extract worker logic into McpWorker ([#2800](#2800)) ([77165c6](77165c6)) * group Puppeteer and tool options ([#2875](#2875)) ([699c4d5](699c4d5)) * lazily initialize McpPage from Target and enumerate targets in McpContext ([#2812](#2812)) ([545cbe3](545cbe3)) * use default Error for toolSchema ([#2822](#2822)) ([8b2768d](8b2768d)) --- This PR was generated with [Release Please](https://github.com/googleapis/release-please). See [documentation](https://github.com/googleapis/release-please#release-please). Co-authored-by: Alex Rudenko <OrKoN@users.noreply.github.com>
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Reduces token usage of text a11y snapshots with two changes to
SnapshotFormatter:StaticTextrole. Text nodes are very common and the role adds tokens without adding information: the quoted name already identifies a text node.StaticTextwith exactly the same text, the child is not printed. The child is kept in verbose mode, when it has siblings, or when it is the element selected in the DevTools Elements panel. Its uid remains valid.The JSON snapshot output is unchanged and still includes
role: "StaticText"and all children.Before:
After:
Measurement
take_snapshotvia the CLI on https://www.wikipedia.org (non-verbose):main)StaticTextrole prefixes removed (~748 chars).