--- title: "Writerside: vendor profile: Agent Ready HTML" description: "Writerside, a framework: 0 of 6 standards stated as supported, 12 sourced facts, dated plans and what it does not do. Read 2026-11-05." canonical: https://agentreadyhtml.com/vendors/writerside/ site: "Agent Ready HTML" last_updated: 2026-11-05 section: "Vendors" --- # Writerside: vendor profile: Agent Ready HTML > Writerside, a framework: 0 of 6 standards stated as supported, 12 sourced facts, dated plans and what it does not do. Read 2026-11-05. Source: https://agentreadyhtml.com/vendors/writerside/ Site: Agent Ready HTML Last reviewed: 2026-11-05 # Writerside: vendor profile In short Writerside is free but closed source, and now exists only as a plugin for JetBrains IDEs. Sitemap and llms.txt output wait for tags in buildprofiles.xml, and indexing stays off until allowed. The help site redirected /llms.txt with a 302 on 2026-11-05, and getting-started.html.md was served with the content type \*/\*. ## At a glance **standards.txt** writerside ```text llms-txt = partial markdown-negotiation = no statement markdown-twin = partial initial-html = no statement real-404 = no statement vary-accept = no statement ``` 0 supports, 2 partial or announced, 4 no statement. **Writerside** Framework JetBrains documentation authoring tool, now a free IDE plugin, whose builder publishes help websites; buildprofiles.xml switches on llms.txt with .html.md Markdown copies and a sitemap, and instances stay out of search indexes unless allowed. Type [Framework](https://agentreadyhtml.com/vendors/by-type/framework/) Operator, as the facts below state it JetBrains Home page [www.jetbrains.com/writerside](https://www.jetbrains.com/writerside/), answered HTTP 200 on 2026-11-05 Last read 5 November 2026 ## What it does for this layer - JetBrains retired the standalone Writerside IDE on 2025-03-20; Writerside lives on as a free plugin for JetBrains IDEs. \[primary source, 2025-03-20\] [source](https://blog.jetbrains.com/writerside/2025/03/sunsetting-writerside-ide/), read 5 November 2026. - JetBrains launched the Writerside Early Access Program in October 2023, built on the IntelliJ Platform. \[primary source\] [source](https://blog.jetbrains.com/writerside/2025/03/sunsetting-writerside-ide/), read 5 November 2026. - JetBrains says it has no plans to open-source the Writerside IDE, so unlike most tools in this group Writerside is free but closed source. \[vendor claim\] [source](https://www.jetbrains.com/writerside/), read 5 November 2026. - Writerside can generate an llms.txt listing every topic in a help instance, each linked to a .html.md Markdown version of the topic. \[primary source\] [source](https://www.jetbrains.com/help/writerside/generate-llms-txt.html), read 5 November 2026. - With llms.txt switched on through true in buildprofiles.xml, Writerside adds references to llms.txt and the page's Markdown version to every HTML head. \[primary source\] [source](https://www.jetbrains.com/help/writerside/generate-llms-txt.html), read 5 November 2026. - Writerside also lists /llms.txt as a entry in sitemap.xml once the feature is enabled. \[primary source\] [source](https://www.jetbrains.com/help/writerside/generate-llms-txt.html), read 5 November 2026. - Writerside writes no sitemap by default; a tag in buildprofiles.xml, with optional priority and change-frequency, turns it on. \[primary source\] [source](https://www.jetbrains.com/help/writerside/generate-sitemap.html), read 5 November 2026. - Writerside keeps published content out of search engines unless the noindex-content variable is set to false or Allow search engine indexing is ticked for the instance. \[primary source\] [source](https://www.jetbrains.com/help/writerside/allow-search-engine-indexing.html), read 5 November 2026. - Writerside builds help websites with its bundled builder locally or with a Docker image of the builder in CI. \[primary source\] [source](https://www.jetbrains.com/help/writerside/build-and-publish.html), read 5 November 2026. - The Writerside help site on jetbrains.com redirected /llms.txt with a 302 to /llms.txt/ on 2026-11-05, where a 9,328-byte text/plain index answered. \[observed\] [source](https://www.jetbrains.com/help/writerside/generate-llms-txt.html), read 5 November 2026. - After the same trailing-slash redirect, the Writerside help page getting-started.html.md/ was served on 2026-11-05 with the content type \*/\* rather than text/markdown. \[observed\] [source](https://www.jetbrains.com/help/writerside/generate-llms-txt.html), read 5 November 2026. - Asked for getting-started.html with Accept: text/markdown on 2026-11-05, the Writerside help site sent 24,116 bytes of HTML whose H1 Getting started was already in the markup. \[observed\] [source](https://www.jetbrains.com/help/writerside/generate-llms-txt.html), read 5 November 2026. ## Products and plans | Product | What it is | Price | As of | Source | | --- | --- | --- | --- | --- | | Writerside plugin | JetBrains IDE plugin for writing, testing and building documentation websites. | Free; free plugin on JetBrains Marketplace; standalone IDE retired 2025-03-20; not open source | 2026-11-05 | source | ## Standards | Standard | Status | What the vendor's pages say | Source | | --- | --- | --- | --- | | llms-txt | partial | Writerside generates llms.txt once true is set in buildprofiles.xml. | source | | markdown-negotiation | no statement | No statement found in the Generate llms.txt, sitemap, indexing or build topics; the help site answered Accept: text/markdown with HTML. | none | | markdown-twin | partial | With llms.txt enabled each topic gets a .html.md Markdown version linked from llms.txt and the page head. | source | | initial-html | no statement | No statement found on output rendering in the build and publish topic; the jetbrains.com help page carried its H1 in the served HTML. | none | | real-404 | no statement | No statement found in the Writerside topics read; jetbrains.com/help/writerside returned 404 for a made-up topic on 2026-11-05. | none | | vary-accept | no statement | No statement found in the Writerside topics read; Writerside output does not negotiate on Accept. | none | ## Checks on its own site Plain-fetch checks ran on https://www.jetbrains.com/writerside/; the Ora and Cloudflare scores cover the whole host jetbrains.com. | Reading | Result | Date | | --- | --- | --- | | Home page request | HTTP 200; H1 in the initial HTML: no; 10 words; 1 JSON-LD block | 2026-11-05 | | Request with Accept: text/markdown | HTTP 200, text/html, no Vary header | 2026-11-05 | | /llms.txt at the host root | HTTP 404, text/html, 42 KB | 2026-11-05 | | A made-up path | HTTP 301, redirect to /agent-ready-check-yk8b93em/, then HTTP 404 | 2026-11-05 | | Ora score, cached | 62, grade C | 2026-10-29 | | Cloudflare keyless scan | 20, L1 Basic Web Presence | 2026-11-05 | | Shared crawl row | Tranco rank 958; home page HTTP 200; H1 in the HTML: yes; 1,329 words; JSON-LD types: WebPage; answers markdown: no; made-up path HTTP 404; llms.txt valid: no | 2026-11-04 | ## What it does not do - Writerside is not open source and is no longer sold as a standalone IDE. ## Related pages on this site - [Frameworks in this section](https://agentreadyhtml.com/vendors/by-type/framework/) - [The Plain Fetch viewer](https://agentreadyhtml.com/viewer/) ## Sources 1. [Writerside (JetBrains product page)](https://www.jetbrains.com/writerside/) https://www.jetbrains.com/writerside/, read 5 November 2026 2. [Sunsetting Writerside IDE (The JetBrains Blog)](https://blog.jetbrains.com/writerside/2025/03/sunsetting-writerside-ide/) https://blog.jetbrains.com/writerside/2025/03/sunsetting-writerside-ide/, read 5 November 2026 3. [Generate llms.txt | Writerside Documentation](https://www.jetbrains.com/help/writerside/generate-llms-txt.html) https://www.jetbrains.com/help/writerside/generate-llms-txt.html, read 5 November 2026 4. [Generate sitemap | Writerside Documentation](https://www.jetbrains.com/help/writerside/generate-sitemap.html) https://www.jetbrains.com/help/writerside/generate-sitemap.html, read 5 November 2026 5. [Allow search engine indexing | Writerside Documentation](https://www.jetbrains.com/help/writerside/allow-search-engine-indexing.html) https://www.jetbrains.com/help/writerside/allow-search-engine-indexing.html, read 5 November 2026 6. [Build and publish | Writerside Documentation](https://www.jetbrains.com/help/writerside/build-and-publish.html) https://www.jetbrains.com/help/writerside/build-and-publish.html, read 5 November 2026 Last reviewed 5 November 2026 Edition Crawl 2026-11-04 Page updated 2026-11-05 Method How the viewer reads a page, how a file is graded and how a platform is scored: [the method page](https://agentreadyhtml.com/method/).