| What it does | Fast, 100% client-side developer platform with zero-data logging
| Free web tools for SEO, code and everyday tasks
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| Stage | Not given
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| Based in | Not given
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| Pricing model | Free
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| Pricing | All tools are free with no usage limits. The site may show ads in the future to cover running costs.
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| Key features | - Multi-timezone support with IANA database and daylight saving time
- JSON to TypeScript conversion
- JWT decoder and inspection
- Cron expression parser and generator
- End-to-end encrypted environment variable vaults
- P2P multiplayer canvas with WebRTC and CRDT
- Steganography for hiding encrypted secrets in images
- Service Worker API mocker for frontend testing
- Encrypted URL shares with hash fragment storage
| - 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-data logging: no keystroke sent to external servers, all processing in browser memory
- 100% client-side operation works entirely offline
- Unified ecosystem across web, CLI, and AI agents via MCP Server
- Sub-millisecond performance with local execution
- Tool chaining and piping for seamless multi-stage workflows
| - 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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| Free plan | Not given
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| Open source | Not given
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| Platforms | Not given
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| Public API | Not given
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 1 ▲ +1 (up) since last check | 3 ● no change since last check |
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| Trust Flow (Majestic) | 1 | 2 |
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| Citation Flow (Majestic) | 19 | 19 |
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| Referring domains (Majestic) | 7 | 10 |
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Castov
SEOpeck