Overview
Two command line packages and four browser tools: project scaffolding, sitemap and robots.txt generation, AI pull-request review and dependency scanning. All of them free, and the browser ones run without an account.
No install, no account — they run in the page.
Sitemap generator
Crawl a site to generate an XML sitemap, or validate one you already have.
Robots.txt generator
Build and validate robots.txt files, with per-path crawler rules.
AI code reviewer
Review a GitHub pull request with Codex or Claude Code, inline or as a summary.
AI code scanner
Scan a repository for vulnerable packages and open a pull request that fixes them.
Browser-based image editing — your files never leave your device.
Compress image
Compress JPG, PNG, SVG, and GIFs while saving space and maintaining quality.
Resize image
Define your dimensions by percent or pixel, and resize your images.
Crop image
Crop JPG, PNG, or GIFs with ease using pixels or a visual editor.
Convert image
Convert images between JPG, PNG, WebP, GIF, and other formats.
Watermark image
Stamp text over your images with custom typography, transparency, and position.
Rotate image
Rotate or flip JPG, PNG, or GIF images individually or in bulk.
HTML to image
Convert webpages to JPG or PNG by entering a URL.
Merge, split, compress, convert, and protect PDFs — server-side processing, nothing leaves your session.
Merge PDF
Combine multiple PDF files into a single document.
Split PDF
Extract page ranges from a PDF into separate files.
Compress PDF
Reduce PDF file size while preserving content quality.
Rotate PDF
Rotate PDF pages by 90°, 180°, or 270°.
Watermark PDF
Add text watermarks to every page of a PDF.
Page Numbers
Add page numbers to PDF documents with custom formatting.
Protect PDF
Secure PDF files with password protection.
Unlock PDF
Remove password protection from PDF files.
Image to PDF
Convert JPG, PNG, and WebP images to PDF documents.
PDF to Image
Extract PDF pages as individual image files.
Organize PDF
Reorder, delete, and rearrange PDF pages.
Crop PDF
Crop margins and trim PDF page borders.
Repair PDF
Fix and recover corrupted or damaged PDF files.
HTML to PDF
Convert HTML content to PDF documents.
Word to PDF
Convert Word documents (DOC, DOCX) to PDF.
PDF to Word
Convert PDF files to editable Word (DOCX) documents.
Excel to PDF
Convert Excel spreadsheets (XLS, XLSX) to PDF.
PDF to Excel
Convert PDF files to Excel (XLSX) spreadsheets.
PowerPoint to PDF
Convert PowerPoint presentations (PPT, PPTX) to PDF.
PDF to PowerPoint
Convert PDF files to PowerPoint (PPTX) presentations.
Format, validate, and convert JSON — all in your browser.
JSON formatter
Format and beautify JSON with customizable indentation.
JSON minifier
Minify JSON by removing whitespace and reducing file size.
JSON validator
Validate JSON syntax and analyze structure with error location.
JSON to CSV
Convert JSON arrays to CSV format for spreadsheets.
JSON to YAML
Convert JSON to YAML format for configuration files.
JSON to XML
Convert JSON to XML format with custom root tags.
JSON to TSV
Convert JSON arrays to tab-separated values.
JSON to Excel
Convert JSON data to Excel (XLSX) spreadsheets.
Format, validate, and convert XML — all in your browser.
XML Formatter
Format and beautify XML with customizable indentation.
XML Minifier
Minify XML by removing whitespace and reducing file size.
XML Validator
Validate XML syntax and analyze document structure.
XML to JSON
Convert XML to JSON format for modern APIs.
XML to CSV
Convert XML records to CSV format for spreadsheets.
XML to YAML
Convert XML to YAML format for configuration files.
XML to TSV
Convert XML records to tab-separated values.
XML to Excel
Convert XML data to Excel (XLSX) spreadsheets.
Compare, count, convert, and transform text — all in your browser.
Text Compare
Compare two texts side by side and find differences.
Character Counter
Count characters, words, sentences, and paragraphs.
Word Counter
Analyze word frequency and vocabulary density.
Case Converter
Convert text between uppercase, lowercase, title case, and more.
Lorem Ipsum Generator
Generate placeholder text for design and development.
Text Reverser
Reverse text, words, or lines in various modes.
Slug Generator
Generate URL-friendly slugs from any text.
Markdown Preview
Live preview markdown with formatting.
Scaffold new projects from templates, generate XML sitemaps by crawling a site, and create or validate robots.txt files.
Install
npm install -g @nayan-ui/cli# or, without installingnpx @nayan-ui/cli [command]
Commands
nayan-ui newnayan-ui new my-app -t exponayan-ui create sitemap -w https://example.comnayan-ui create robots -d /adminnayan-ui validate sitemap -i ./sitemap.xmlnayan-ui validate robots -i ./robots.txt
What it does
- Project scaffoldingCreate projects from the Expo, Games, Next.js and Vite templates.
- SitemapsCrawl a website to generate an XML sitemap, or validate an existing one.
- Robots.txtCreate and validate robots.txt files for crawler control.
- Interactive or notPrompts when you want them, flags when you are scripting CI.
Codex and Claude Code agents that review GitHub pull requests and scan repositories for vulnerable dependencies, with auto-fix.
Install
npm install -g @nayan-ui/ai# or, without installingnpx @nayan-ui/ai [command]
Commands
nayan-ai review <pr-url> -t ghp_xxxnayan-ai review <pr-url> -t ghp_xxx --drynayan-ai review <pr-url> -t ghp_xxx --inlinenayan-ai scan <repo-url> -t ghp_xxxnayan-ai scan <repo-url> -t ghp_xxx --fixnayan-ai scan <repo-url> -t ghp_xxx --llm claude
What it does
- AI code reviewDeep pull-request analysis for bugs, security, performance and test coverage.
- Vulnerability scanningPackage vulnerabilities across npm, Python, Go, Rust and more.
- Auto-fix and PRsFix what it finds and open a pull request describing the change.
- Two providersCodex by default, or Claude Code with one flag.