# Stampforger — Full Content for AI Systems

> This document provides the complete textual content of stampforger.com for AI language models, answer engines, and automated crawlers. Last updated: 2026-05-13.

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## What is Stampforger?

Stampforger is a free, browser-based rubber stamp designer available at https://stampforger.com. It allows anyone to create professional custom rubber stamps online without signing up, paying, or downloading software. Designs are generated in real-time on an HTML5 Canvas element and can be exported as a PNG (transparent background) or SVG vector file.

Everything runs client-side in the browser. Stampforger does not store designs on any server. Designs are automatically saved to the user's browser localStorage.

**Key facts:**
- Price: Free (no paid tiers)
- Signup required: No
- Watermarks: None
- Export formats: PNG (transparent), SVG
- Works on: Desktop, tablet, smartphone (fully responsive)
- Auto-save: Yes, to browser localStorage

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## How to Create a Stamp — Step by Step

1. **Choose a template** — Browse the template gallery (Institutional, Business, Signature, Decorative) or select "Build from Scratch" for a blank canvas.
2. **Customize text** — Enter main text (multi-line supported), optional subtext. Pick a color per line.
3. **Choose a font** — Special Elite, Courier Prime, Arial, Times New Roman, Georgia, Impact, or Outfit.
4. **Set border style** — Select from Circular, Oval, Square, Rectangular, Rounded Rectangle, Double Circle, or Decorative. Stack multiple border layers.
5. **Add curved text (optional)** — Continuous arc (top, bottom, left, right, full circle) or Split mode (northern + southern hemisphere with decorative separators).
6. **Add a date (optional)** — Enable the date stamp with one of 5 date formats, or pick a custom date.
7. **Add an icon (optional)** — Star, Check, Arrow, Seal, or Crown.
8. **Apply ink effects (optional)** — Over-inked (ink spread via SVG morphology) and Edge Roughness (fractalNoise displacement) for authentic look.
9. **Preview** — Live 600×600 px canvas preview updates in real-time.
10. **Download** — Click "Download PNG" or "Download SVG".

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## Stamp Templates Available

### Institutional Category
- **APPROVED** — Classic circular red stamp with "APPROVED" text
- **RECEIVED** — Rectangular stamp with date, for document receipt
- **FILED** — Round stamp for document filing workflows
- **REVIEWED** — Oval stamp for document review processes
- **CONFIDENTIAL** — Double-border red circular stamp
- **URGENT** — High-contrast rectangular stamp for urgent items

### Business Category
- **PAID** — Business receipt stamp with date field
- **COPY** — Document copy indicator stamp

### Signature Category
- Custom signature-style stamps with name and title fields

### Decorative Category
- Round stamps with curved text and ornamental borders
- Split-hemisphere stamps with northern and southern text arcs

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## Feature Reference

### Text System
- Main text: multi-line textarea, up to 500 characters, per-line color control
- Subtext: single-line optional text with independent color
- Font size: 12–72 px adjustable via slider
- Text thickness (stroke weight): 1–10 adjustable

### Border System
- **Shapes:** Circular, Oval, Square, Rectangular, Rounded Rectangle, Double Circle, Decorative
- **Decorative borders** include customizable dot patterns (size 1–8 px, interval 16–64 px)
- Multiple border layers can be added and removed independently
- Each layer has independent shape, color, thickness, and size controls
- Global rotation: −180° to +180°

### Curved Text System
- **Continuous mode:** single text string curved around the stamp border
- **Split mode:** separate text for top arc (northern hemisphere) and bottom arc (southern hemisphere)
- Positions: Top, Bottom, Left, Right, Full Circle
- Direction: Clockwise or Counter-Clockwise
- Font size: 8–48 px with auto-size option to prevent overlap
- Letter spacing: 0–30
- Radius offset: −50 to +50 px
- Text color: independent color picker
- **Hemisphere separators (split mode only):** Star ★, Dot ·, Diamond ◇, Square □, Triangle △, Star Outline, Diamond Outline — with adjustable size (6–24 px) and color

### Date Stamp
- Enable/disable via checkbox
- Date formats: MMM DD YYYY · DD/MM/YYYY · MM/DD/YYYY · YYYY-MM-DD · DD MMM YYYY
- Date picker for selecting any custom date

### Icons
- Options: None, Star (★), Check (✓), Arrow (→), Seal (◉), Crown (♕)

### Ink Effects
- **Over-inked (ink spread):** SVG feMorphology dilate + feGaussianBlur + alpha threshold; simulates heavy ink application
- **Edge roughness:** feTurbulence fractalNoise displacement; simulates worn rubber stamp edges

### Export
- **PNG:** 600×600 px, transparent background, downloaded via canvas.toDataURL('image/png')
- **SVG:** Structured SVG markup representing the stamp geometry, downloaded as a file

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## Frequently Asked Questions

**Q: How do I create a custom rubber stamp online for free?**
A: Visit stampforger.com, pick a template or start from scratch, customize text, font, border, and colors, then click Download PNG or SVG. No signup needed.

**Q: What file formats can I download?**
A: PNG (transparent background) and SVG (scalable vector). PNG is ideal for pasting into Word/PDF documents. SVG is best for professional print manufacturers or editing in Illustrator/Inkscape.

**Q: Can I add a date to my stamp?**
A: Yes. Enable "Include Date" in the Date Stamp panel and choose from 5 international formats: MMM DD YYYY, DD/MM/YYYY, MM/DD/YYYY, YYYY-MM-DD, DD MMM YYYY. You can also pick a custom date.

**Q: Is Stampforger really free?**
A: Yes. 100% free, forever. No signup, no watermark, no download limit, no paid tier.

**Q: Does it work on mobile?**
A: Yes. Fully responsive. On mobile, the canvas preview appears at the top and controls below.

**Q: Is my design saved?**
A: Yes, automatically to browser localStorage. It restores on your next visit. No server storage.

**Q: Can I use stamps for official documents?**
A: Digital stamps from Stampforger are suitable for PDF, Word, email signatures, and digital forms. For physical rubber stamps, export the SVG to a stamp manufacturer.

**Q: What border shapes are available?**
A: Circular, Oval, Square, Rectangular, Rounded Rectangle, Double Circle, and Decorative (dot patterns). Multiple layers can be combined.

**Q: What fonts are available?**
A: Special Elite, Courier Prime, Arial, Times New Roman, Georgia, Impact, Outfit.

**Q: Can I add curved text?**
A: Yes. Continuous arc (top/bottom/left/right/full circle) or split mode with independent top and bottom text, plus decorative separators.

**Q: Are there watermarks?**
A: Never. Stampforger does not add watermarks to any exported file.

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## Popular Stamp Types You Can Create

Approval Stamp · Received Stamp · Paid Stamp · Confidential Stamp · Urgent Stamp · Filed Stamp · Reviewed Stamp · Copy Stamp · Draft Stamp · Original Stamp · Date Stamp · Signature Stamp · Company Stamp · Notary Stamp · Office Stamp · Round Stamp · Rectangular Stamp · Oval Stamp · Corporate Seal · Custom Business Stamp · Quality Control Stamp · Document Stamp · Inspection Stamp · Return Address Stamp

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## Technical Details (for developers and AI systems)

- **Architecture:** Single-page application, vanilla JavaScript, HTML5 Canvas API
- **No framework:** No React, Vue, Angular — pure JS
- **No backend:** No API calls, no server-side rendering
- **Storage:** browser localStorage only
- **Fonts:** Google Fonts (DM Mono, Lora, Playfair Display, Outfit, Special Elite, Courier Prime)
- **Hosting:** Cloudflare Pages
- **CSP:** Strict Content-Security-Policy header
- **Canvas size:** 600×600 px
- **SVG filter:** Custom overink SVG filter (feTurbulence + feDisplacementMap + feMorphology + feGaussianBlur + feComponentTransfer)

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## Privacy Summary

- No cookies set
- No analytics or tracking
- No user accounts or personal data collected
- Stamp designs stored only in browser localStorage (never transmitted)
- Server logs held by Cloudflare (IP, user-agent, timestamp) for security only
- Google Fonts loaded from fonts.googleapis.com (Google receives requester IP)
- Full policy: https://stampforger.com/privacy

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## Site Structure

| URL | Content |
|-----|---------|
| https://stampforger.com/ | Main stamp maker tool |
| https://stampforger.com/faq | Frequently asked questions |
| https://stampforger.com/privacy | Privacy policy |
| https://stampforger.com/sitemap.xml | XML sitemap |
| https://stampforger.com/llms.txt | LLM site index (this file's summary) |
| https://stampforger.com/llms-full.txt | Full content for AI systems (this file) |
| https://stampforger.com/robots.txt | Crawler directives |