# BlankImages.com — Full Technical & Architectural Specification
Canonical Domain: https://blankimages.com
License: 100% Free, CC0-Equivalent, Attribution-Free
Client-Side Privacy: 100% in-browser HTML5 Canvas processing with zero server uploads

## 1. Complete Route & Tool Manifest

### A. Core Studio Generators
1. /blank-image/: Transparent blank PNG, WebP, pure vector SVG. Supports resolutions up to 16,000x16,000 px.
2. /plain-image/: Solid color images, Pro Color Suite (EyeDropper, alpha slider, Hex/RGB inputs, designer palettes).
3. /gradient-image/: Linear (360° angle), Radial, Conic, and 4-point organic Mesh gradients with 60fps film grain noise.
4. /grid-image/: Standard checkerboards, Architectural Blueprint (cyan grid with division crosshairs), Isometric 3D grids.
5. /blank-profile/: Typographic monograms (Inter, Outfit, Playfair, JetBrains Mono), border gradients, active status rings.
6. /triangle-pattern-image/: Procedural repeating triangles with cell size, stroke color, and vector SVG export.
7. /circle-pattern-image/: Polka dot matrix & Halftone dot scaling.
8. /demon-slayer-image/: Cultural anime haori geometric patterns: Ichimatsu checkerboard, Urokoyomoyo diamond scales, Asanoha hemp-leaf lattice.

### B. Hardware Device Hubs
1. /iphone/: Full Apple iPhone lineage from 1st Gen (320x480) to iPhone 17 Pro Max (1320x2868), complete iPad Pro/Air/mini/classic lineage (M4 Tandem OLED to 1st gen), MacBook Pro, Apple Watch Ultra 2. Pure OLED #000000 wallpapers.
2. /samsung/: Samsung Galaxy S8 (1440x2960) to Galaxy S26 Ultra (1440x3120), Z Fold 6/7, Z Flip 6/7, Galaxy Tab S10 Ultra, plus Google Pixel 9 series, Microsoft Surface, Motorola Razr, Huawei Mate XT, Nothing, OnePlus, Xiaomi, vivo, OPPO, Dell 6K, Steam Deck, and ROG Ally. Dynamic AMOLED 2X specs.

### C. Social Media Hubs
1. /instagram/: Story/Reel (1080x1920 with safe zone), Portrait 4:5 (1080x1350), Square 1:1 (1080x1080), Landscape (1080x566), Profile (320x320). Batch ZIP social kit export.
2. /tiktok/: Video/Story (1080x1920 with safe zones: top 150px, bottom 320px, right 120px), Profile (200x200). Batch ZIP export.
3. /x/: Header (1500x500 with mobile avatar clearance), Post 16:9 (1280x720), Square (720x720), Profile (400x400).
4. /linkedin/: Banner (1128x191), Company Cover (1128x282), Post (1200x627 & 1200x1200), Profile (400x400).
5. /facebook/: Cover (851x315), Square (1080x1080), Vertical (1080x1359), Story (1080x1920), Profile (196x196).

### D. QA & Developer Utilities
1. /create-image-by-file-size/: Exact byte-padded dummy test images (1 KB to 50 MB) in PNG, JPEG, WebP. Standard platform boundary limits (Nginx, Vercel, Slack, Discord, Twitter, Gmail); off-by-one offsets (-1B pass, +1B fail); negative/malformed stress files (0-byte, 1-byte, corrupted magic headers, truncated streams); 1-click 12-file QA test pack .ZIP; client-side file validator with magic byte hex analyzer & SHA-256 checksums; and SMPTE / grayscale calibration cards.
2. Binary Favicon .ico: Multi-resolution binary assembly (16x16, 32x32, 48x48) via client-side Uint8Array packing.

### E. Engineering Guides & Technical Whitepapers (/blog/)
All guides strictly dated between October 10 and October 13, 2026, and ordered latest to oldest:
1. /blog/transparent-blank-image-guide/ (2026-10-13): Transparent blank images, alpha channels, CLS = 0 layout stabilization, and canvas compositing.
2. /blog/oled-pure-black-wallpaper-guide/ (2026-10-12): OLED pure black (#000000) physics, subpixel shutoff, Super AMOLED battery benchmarks, and OLED smearing prevention.
3. /blog/exact-file-size-testing-guide/ (2026-10-11): Binary chunk injection (PNG tEXt before IEND, JPEG COM markers, WebP RIFF) for byte-accurate QA and off-by-one boundary validation.
4. /blog/social-media-image-dimensions-safe-zones-guide/ (2026-10-10): 2026 mobile viewport safe zones (9:16 vertical, 4:5 portrait, LinkedIn/X avatar overlap avoidance).

### F. Programmatic Landing Pages
- /black-image/: OLED pure black (#000000) wallpapers.
- /white-image/: Clean white canvas (#ffffff).
- /transparent-png/: 1-click transparent clear PNG.
- /1920x1080-white-solid-image/: FHD 1080p white solid.
- /1920x1080-black-solid-image/: FHD 1080p black solid.
- /400x400-black-image/: 400x400 avatar/placeholder.
- /plain-white-rectangle-image/: White rectangle with rounded corners.
- /16-9-image/: 16:9 widescreen preset.
- /1-1-square-image/: 1:1 square preset.
- /4k-wallpaper/: 3840x2160 Ultra HD.
- Color Landers: /red-image/, /green-image/, /blue-image/, /yellow-image/, /minimal-gray-image/.

## 2. 13-Language Internationalization (i18n)
All routes available in 13 locales with bidirectional layout support:
- English: /
- Spanish: /es/
- Simplified Chinese: /zh-CN/
- Traditional Chinese: /zh-TW/
- Japanese: /ja/
- Portuguese (Brazil): /pt-BR/
- German: /de/
- French: /fr/
- Hindi: /hi/
- Arabic (RTL): /ar/
- Russian: /ru/
- Korean: /ko/
- Italian: /it/

Full bidirectional hreflang links injected on every page.