| Key features | - Typed host and hostee SDKs for building and embedding features
- CLI for initialization, building, and development with feature.config.*
- Dev server with debug UI for inspecting host/hostee message traffic
- Multiple display modes: embedded, dialog, popup, standalone
- Contract declaration with message validation and schema enforcement
- Optional encryption with v3 and v4 protocols
- Framework-agnostic with support for React, Vue, Angular, vanilla JS
- Lifecycle management with open/close and ready state handling
- Message broker with typed routing and validation
| - On-Page SEO Checker to audit page titles, meta tags, headings, images, links, canonical and structured data
- Website Speed Test with Google PageSpeed Insights and Core Web Vitals
- Image Compressor to shrink JPG, PNG and WebP images in bulk and resize
- JSON Beautifier to format, validate and minify JSON
- Broken Link Checker to find broken links, dead images and redirects
- DNS Lookup to fetch domain DNS records
- Website SEO Audit to crawl up to 100 pages and find missing titles and duplicate descriptions
- Password Generator to create strong random passwords
- QR Code Generator to turn links into scannable QR codes
- PDF tools including merge, split, compress, rotate, sign and watermark
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| What makes it different | - Zero runtime dependencies and self-contained feature packages require no transitive install burden
- Modernize without a rewrite by composing existing applications of any age
- Contract-based type safety with handshake validation and fail-closed security
- Production-ready static file server with optional encryption and message inspection
| - 348 free tools with no sign-up required
- Most tools run in your browser so files stay on your device
- No accounts, no trials, no restrictions on tool usage
- Tools have no daily limits and light rate limits keep service fast
- Plain explanations for every result, not just numbers
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HyperFrontend
SEOpeck