| What it does | Create, repair, extract, and apply digital stamps in minutes
| Free online tools for flowcharts, charts, diagrams and timelines with no sign-up
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| Stage | Not given
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| Founded | Not given
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| Based in | Not given
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| Pricing model | Freemium
| Freemium
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| Pricing | Free core features; paid plans available with annual discount of 50% on select plans
| Free: no account required, all diagram and chart makers, PNG/SVG/PDF export, no watermark. Pro: Monthly $9.99 a month, Yearly $99.99 a year with 7-day free trial, Lifetime $239.99 once. Euro area: €10.99 a month, €109.99 a year, €259.99 once (VAT included).
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| Key features | - Digital stamp generation from templates or blank canvas
- Repair and cleanup of blurry legacy stamp images
- Extract transparent stamps from scans and screenshots
- Layer editing with text and style controls
- Apply stamps to PDF contracts and documents
- Export in multiple formats including PNG and SVG
- Save and reuse stamp templates
- Color, opacity, and aged effects adjustments
- No registration required for basic features
- AI-assisted repair and extraction tools
| - Flowchart and process diagram maker with canvas and text-to-diagram modes
- Text-to-diagram tools for UML, ER and sequence diagrams
- Chart tools: pie chart, line graph, gauge and Sankey diagram
- Automatic diagram layout from typed text
- Export to PNG, SVG and PDF without watermark
- Share diagrams with share links
- Pro: editable .drawio export and vector PDF
- Pro: multi-page documents and layers
- Diagram checks for unlabelled branches and dead ends
- Works on phone and computer
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| What makes it different | - All-in-one workflow combining creation, repair, extraction, and application in one browser tool
- No Photoshop or design skills needed—browser-based with instant preview
- Built to handle real-world delivery scenarios across PDFs, contracts, invoices, and e-commerce
- Repair workflow for legacy stamps instead of forcing a complete rebuild
- Transparent-background exports ready for immediate reuse
| - Completely free with no account required and no watermark on exports
- Nothing uploaded: all work stays on your device in your browser
- Results computed by the same tested code, not manually typed
- Multiple export formats: PNG at 4 sizes, SVG and PDF
- Converts between formats: Mermaid to draw.io, SQL to ER, Visio to flowchart
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 10 ● no change since last check | 3 ▲ +1 (up) since last check |
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| Trust Flow (Majestic) | 2 | 0 |
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| Citation Flow (Majestic) | 21 | 19 |
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| Referring domains (Majestic) | 20 | 4 |
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Stamp Maker
Diagram Smith