Writing AI Apps

Paste a job posting and your history — get a resume rewritten for the role where every claim traces back to your own file, plus a complete matching cover letter. Unsupported requirements are left out and listed, never invented — then turned into questions, so what you forgot to write down can still count. Rewrite any line or the whole document in a click, pick one of six templates, and download PDF, editable Word (.docx) or ATS-safe plain text, with ATS keywords, gap analysis and interview prep.

Create and edit Word (.docx) documents in your browser with an AI assistant. Word Online-style editor with ribbon formatting, tables, images and lists; the file itself never leaves your browser — the AI edits the document content on request.

See every invisible character in your text - zero-width spaces, directional overrides, tag characters, private-use codepoints, homoglyph spaces - each named, counted and located, then removed exactly, without breaking the joiners that hold emoji, Persian, Khmer, Hangul and regional flags together. Adds a zero-model style score for AI-like cadence and an optional model lane that either explains the findings or rewrites only the highest-signal paragraphs, with a word-level before-and-after diff. The scan, the reveal view, the style score and the clean all run free in your browser with no account. Method derived from github.com/guillaumemeyer/watermarks-remover (MIT, Guillaume Meyer) - this app is an independent re-implementation of that project's text layers, not a port of its code.

Score how well your resume matches a job posting from LinkedIn, Indeed, Greenhouse, Lever, Workday and more — paste the URL or the text and we strip the page clutter automatically. See the keyword and skill gaps hurting your chances and get concrete, paste-ready rewrites, with ATS tips tuned to the source platform. Powered by a SkillSafe agent.

Paste a JavaScript or TypeScript module and get a publish-ready SDK documentation article: definition-first opening, working code against your real exports, YAML frontmatter, a style lint that hunts down AI writing tells, and honest notes naming the gaps only the author can fill. Derived from @tldraw/write-docs.

Paste your marketing copy and get it edited through seven focused passes - clarity, voice, so-what, proof, specificity, emotion and risk. Every finding quotes the exact line it is about; the edited version is ready to paste back; three expert personas score the result. Free instant word-level checks run in your browser before you sign in. Methodology adapted from the open-source Seven Sweeps framework (@coreyhaines31/copy-editing).

Describe the product moment - the screen, what the user is doing, how they feel - and get the microcopy to ship: buttons, error messages, empty states, dialogs and tooltips, with real alternatives, the rationale, localization notes and the open questions named. Paste the copy you have today for a string-by-string review. The copy linter runs free in your browser. Derived from @anthropics/ux-writing.

Paste an article and get a Generative Engine Optimization audit: whether Perplexity, ChatGPT, Claude and Gemini would retrieve it, trust it and cite it. Your browser does the deterministic half for free — it chunks the article the way a retriever does and flags every passage that cannot stand alone, finds every statistic and says which have no source, scores the five weighted retrieval factors, checks the thirteen-item GEO checklist, resolves your robots.txt per AI crawler, and generates the Article, Person and FAQPage JSON-LD. The metered pass writes the direct-answer block an engine can lift, the FAQ, a fix for every finding and a verdict on every claim. A derived work of the @sickn33/geo-fundamentals skill.

Paste a resolved support ticket, a recurring question or a workaround write-up and get back a publish-ready knowledge base article: a searchable customer-language title, the right article type (How-to, Troubleshooting, FAQ, Known issue, Reference), category, tags and audience, a structured body built only from what the source establishes, publishing notes for the editor, and every unconfirmed fact routed to Gaps to fill instead of into the article. A publish-readiness verdict binds to those gaps: an unfilled gap rules out Publish as is. The source scan, title linter and article lint run free in your browser. Derived from @anthropics/knowledge-management (knowledge-work-plugins).

Paste raw material - meeting notes, a bullet dump, research fragments, a rough draft - show it how you write, and get a publish-ready long-form article: concrete opening, proof over adjectives, your voice kept, banned AI patterns stripped, and every missing fact named instead of invented. Free in-browser material scan; derived from @affaan-m/article-writing.

Paste one piece of content - a launch note, a changelog, an essay, an original post - and get platform-native versions for X, LinkedIn, Threads and Bluesky: each under its character limit, each in your voice, none of them identical copy. Free in-browser limit and banned-pattern linter; every adaptation decision explained and every unresolved publishing call listed before you post. Derived from @affaan-m/crosspost.

Paste your research notes — code excerpts, design decisions, benchmarks — and get a publish-ready technical blog post draft: the angle (problem, insight, surprise), a full markdown draft, a seven-point quality checklist, and an honest no-story-yet verdict when the material is thin. Free readiness scan runs in your browser. Derived from the @tldraw/write-tbp skill.

Paste a documentation page and get a scored review: Readability, Voice, Completeness and Accuracy out of 10, a prioritized issue list quoting every defect with the concrete fix, and a rewrite of the worst passage. Paste the source code too and accuracy is verified against the truth. Free instant style lint runs in your browser. Derived from @tldraw/review-docs.

Turn a command's --help or man output into a publish-grade tldr page. The free half is a real engine in the browser: a help-text parser that extracts every option and subcommand, a skeleton-page generator, a format lint measuring the tldr-pages rules (title shape, description block, More information line, 5-8 examples, the {{[-s|--long]}} placeholder conventions), a styled preview and .md export. The AI pass writes the examples people actually reach for, grounded in the pasted help text and re-checked by the same lint - every flag it uses that the help text never documented is printed by name. A derived work of @github/create-tldr-page (MIT, github/awesome-copilot).

Paste your git log, merged PR list or raw change notes and get a polished release-notes article: featured highlights, a migration guide for every breaking change, categorized changes with contributor credits, and the complete markdown ready to publish. An instant categorization scan runs free in your browser. Editorial method adapted from @tldraw/write-release-notes.

An independent tool, NOT affiliated with, endorsed by or connected to Nature, Nature Portfolio or Springer Nature: the name refers to the open project mumdark/nature-review-studio this app is derived from, not to the journal. Drop a manuscript (PDF, Word, LaTeX, Markdown, plain text, OpenDocument, RTF, EPUB) and get the desk check free in your browser: structure and section word counts, the figure and table inventory with caption presence, reference-format consistency, the citation cross-check in both directions, statistical-reporting gaps, and the ethics, data-availability and competing-interests statements. The metered pass adds the reviewer judgement — a 2–5 reviewer panel chosen from the manuscript's method fingerprint, an editor letter with a revision-level band, cross-review consensus and a revision task table — and every figure, table, section, reference and statistic it cites is checked back against your paper. The band is this tool's own assessment, never a journal's decision, and nothing it produces is a substitute for real peer review. A derived work of mumdark/nature-review-studio (12-axis concern taxonomy, reviewer-set mappings, strategy and status vocabularies); that repository publishes no licence file, so its taxonomy and vocabulary are used with credit and none of its corpus is redistributed, and it does not endorse this app.

Paste formatted content from a document, web page, email or note and get clean Markdown back, with a live preview. Headings, lists, links, emphasis, code and tables survive; the styling noise does not. Incoming HTML is sanitised with DOMPurify before conversion. Runs fully client-side with no third-party CDN code. Imported Claude artifact. Source: https://github.com/simonw/tools (rich-text-to-markdown.html, Apache-2.0).

Paste text and get words, characters and an estimated reading time at 230 words per minute, updating as you type. For sizing up an article before you commit to it, or working out what a 'x minute read' badge should honestly say. A rough guide - dense or technical writing reads slower than the flat assumption. Runs fully client-side. Imported Claude artifact. Source: https://github.com/simonw/tools (reading-time.html, Apache-2.0).

A multi-section writing pad where every section carries its own live word and character count - for when you are writing to a budget spread across parts rather than one total. Drafts save to your browser's local storage on a debounce, so a reload does not lose them. Nothing leaves the browser. Imported Claude artifact. Source: https://github.com/simonw/tools (word-counter.html, Apache-2.0).

Paste formatted content from a web page and get every hyperlink back as text-plus-URL pairs, copyable as an HTML list, Markdown links, or plain text. A normal paste flattens links into bare words; this reads the clipboard's rich-text flavour and keeps the addresses. Runs fully client-side. Imported Claude artifact. Source: https://github.com/simonw/tools (link-extractor.html, Apache-2.0).

Convert text to and from HTML entities, live as you type. Escape mode handles the five characters that matter; unescape mode decodes named, numeric and hex references, which is what machine-generated HTML actually contains. Output is written with textContent, so your input is never rendered. Runs fully client-side. Imported Claude artifact. Source: https://github.com/simonw/tools (escape-entities.html, Apache-2.0).

Paste terminal output from a Claude Code session and get clean prose back: the leading prompt character is stripped, terminal-wrapped lines are rejoined into paragraphs, whitespace runs collapse, and blank-line paragraph breaks survive. For quoting session output in an issue, commit message or doc without the wrapping artefacts. Runs fully client-side. Imported Claude artifact. Source: https://github.com/simonw/tools (cleanup-claude-code-paste.html, Apache-2.0).

Paste text and see every smart quote, smart apostrophe, em dash and non-breaking space marked in place, with live counts per category. These are the characters that look fine in a document and then break a grep, a code block, or a diff. Covers the full U+2018-U+201F range, not just the common pair. Runs fully client-side. Imported Claude artifact. Source: https://github.com/simonw/tools (curly-emdash.html, Apache-2.0).

Paste raw RTF markup - the {\rtf1\ansi... source itself - and get HTML with text colour, background colour and bold runs preserved as inline styles. The counterpart to a clipboard converter: for when you have RTF as text out of a file, an email source or a database column. Runs fully client-side. Imported Claude artifact. Source: https://github.com/simonw/tools (rtf-to-html.html, Apache-2.0).

A writing box that handles pastes properly: paste an actual file, or text over an adjustable threshold (1,000 characters by default), and it attaches below as a separate item instead of flooding your draft. Attachments show name, type and size, with inline previews for images. Files stay local; nothing is uploaded. Imported Claude artifact. Source: https://github.com/simonw/tools (pasted-file-editor.html, Apache-2.0).

Paste a note straight out of Apple Notes and get clean Markdown and HTML back, with hyperlinks preserved - the tool reads the RTF flavour of the clipboard rather than the flattened plain text. Runs entirely in your browser. Imported Claude artifact. Source: https://github.com/simonw/tools (notes-to-markdown.html, Apache-2.0).