| What it does | Free web tools for SEO, code and everyday tasks
| Free test data generator with realistic multi-table datasets and foreign keys intact
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| Pricing model | Free
| Freemium
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| Pricing | Not given
| Free tier: up to 20,000 rows per dataset, schema design at any size, no credit card required. Paid: metered in credits beyond free allowance, 1 credit = 1 cent; full 1,000,000-row dataset costs 41 credits. Credit packs: $5 for 500 credits, $50 for 6,000 credits, $100 for 13,000 credits. Personal API
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| Key features | - 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
| - AI-powered natural language schema design
- Visual drag-and-drop schema editor
- SQL DDL import with LLM-based parser
- 152 realistic field types across 19 categories
- Referential integrity with single-column foreign keys
- Cardinality ratios for parent-child relationships
- Export to 7 SQL dialects and multiple formats
- Statistical distributions and constraints
- Hosted MCP for AI agent integration
- Auto-saved generation defaults
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| What makes it different | - 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
| - Multi-table foreign key integrity preserved across generated datasets
- Schema design free at any size, only generation is metered
- Generates data in under a minute at scale
- Single, universal format works for SQL and NoSQL databases
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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) | 7 ▲ +4 (up) since last check | Not checked yet ● no change since last check |
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| Trust Flow (Majestic) | 2 | 0 |
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| Citation Flow (Majestic) | 19 | 25 |
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| Referring domains (Majestic) | 10 | 14 |
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SEOpeck
SynthForge IO