Flatten skill category directory structure
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# Platform Specs (2026)
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Hard rules per platform. **Failing these = takedown or de-ranking** — they override aesthetics.
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When in doubt, look up the official rules — these change. Last refresh: 2026-04.
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---
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## 国内电商
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### 淘宝 (Taobao)
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| Spec | Value |
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|------|-------|
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| Main aspect | 1:1 (800×800px) for 60+ categories; 3:4 (750×1000px) for apparel display categories |
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| Main count | 5 images, the 1st = search-result thumbnail |
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| White background | Image #5 must be pure white (used in "猜你喜欢" recommendations); not required for search main |
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| File | JPG / PNG / GIF, ≤ 3 MB |
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| Detail page | PC width 750 px; mobile width 480–620 px; per-image height ≤ 960 px |
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| Main video | Strongly recommended; auto-plays on mobile, ranks higher than static |
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**Reality**: Most search-result main images are scene / model / creative — pure white loses in the feed. Save white for the recommendation slot. Mobile main image area is small — keep info minimal: big text + key selling point + product subject.
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### 天猫 (Tmall)
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| Spec | Value |
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|------|-------|
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| Main aspect | 1:1 (≥ 700×700, recommend 800×800) or 3:4 (750×1000) |
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| Transparent PNG | Must upload at least 1 × 800×800 PNG transparent product image (campaign requirement) |
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| White-bg | Must upload at least 1 white-background product image |
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| File | ≤ 3 MB per image |
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| Detail page | PC 790 px wide; mobile 750 px wide |
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**Reality**: Tmall enforces brand consistency more than Taobao — all main images of one store should share style. The "main + white-bg + transparent" trio is required.
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### 京东 (JD)
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| Spec | Value |
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|------|-------|
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| Main size | 800×800 (square) or 750×1000 (long), ≥ 72 dpi |
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| Main count | ≥ 5 images at multiple angles |
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| Main #1 | **Mandatory pure white background, real product front shot** |
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| File | JPG / PNG / JPEG, ≤ 3 MB (Jingmai) / ≤ 1 MB (Zhipu) |
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| GIF | New uploads no longer supported |
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| Detail page | PC 990 / 750 px; mobile 640 px |
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| Product fill | Centered, fill the canvas (≥ 85% on JD Worldwide) |
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**Reality**: JD is one of the few CN platforms that still hard-enforces pure white on Image #1. Supporting images can be scene / function / infographic.
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### 拼多多 (Pinduoduo)
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| Spec | Value |
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|------|-------|
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| Home main | 750×352 (**horizontal**), ≤ 100 KB |
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| Carousel | Width ≥ 480, any height, ≤ 1 MB each, max 20 |
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| White-bg image | 480×480, ≤ 3 MB, **strict**: no logo / watermark / text / collage / shadow / model / background — only the product, front-on |
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| Campaign main | 750×352, ≤ 100 KB, white background, product centered |
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| Format | JPG / PNG |
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| Detail page | 480–1200 px wide, ≤ 1 MB each |
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**Reality**: 750×352 is **horizontal** — totally different from Taobao/JD squares. Common rookie trap. White-bg rule is enforced strictly. Value-pack / family-pack / buy-one-get-one visualisations work well. "牛皮癣" (heavy promo overlay) gets de-ranked.
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### 抖音商城 (Douyin Shop)
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| Spec | Value |
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|------|-------|
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| Main size | ≥ 480×480, recommend 750×750, 1:1 |
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| Count | ≥ 3, recommend 5+ |
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| Main #1 | Must be a real product photo |
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| File | JPG / JPEG / PNG, ≤ 3 MB main / ≤ 5 MB detail |
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| Aspect | 1:1 recommended, 3:4 allowed |
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| Banned | Full-screen watermark, third-party app watermarks, all main images at the same angle |
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| Detail page | 750 / 1242 px wide |
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**Reality**: For "猜你喜欢" placement the main image must pass platform style rules. Multi-angle is enforced. **Content-feel beats ad-feel** — Douyin shoppers reject "硬广" style. Short video is the actual conversion driver.
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### 小红书 (Xiaohongshu / RED)
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| Spec | Value |
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|------|-------|
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| Note image aspect | One of: 3:4 vertical (mainstream), 1:1 square, 4:3 horizontal — entire note uses one ratio |
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| Recommended | 1080×1440 (best), or 1242×1660 (high-res) |
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| Product image | Recommend 1:1 |
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| Image count | Up to 18 per note |
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| Cover | Image #1 — single biggest CTR lever |
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| Video | 9:16 vertical |
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**Reality**: Note vibes > polish. Pure product shots underperform; lifestyle / scene / "real-person sharing" wins. UGC look beats brand polish. Cover formula = product + scene + bold-text title (but not 牛皮癣).
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### 快手电商 (Kuaishou)
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| Spec | Value |
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|------|-------|
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| Main size | Recommend 800×800 (1:1), auto-compresses to 600×600 on mobile |
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| Resolution | ≥ 72 dpi |
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| Detail | 750 px wide, any height |
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| Format | JPG / PNG |
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**Reality**: Real > polished. Live-room recordings or screenshots accepted as listing images. Value-pack / large-portion / bundle visualisations work.
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---
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## 海外电商
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### Amazon
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| Spec | Value |
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|------|-------|
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| Main short side | ≥ 500 px, recommend 2000×2000 (zoom), max 10000×10000 |
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| Main background | **Pure white RGB(255, 255, 255)** — strictest rule on Amazon |
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| Main content | Product only — no text, no logo, no watermark, no border, no illustration |
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| Product fill | ≥ 85% of frame |
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| Image count | Up to 9 (1 main + 8 supporting) |
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| Format | JPEG preferred, PNG / GIF / TIFF allowed, ≤ 10 MB |
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| Supporting | Infographics / scenes / size charts allowed |
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**Reality**: Recommended set = 1 white-bg main + 2–3 multi-angle + 1 size reference + 1–2 lifestyle + 1 infographic. A+ Content (brand-rich description) lifts conversion materially.
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### Shopify
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| Spec | Value |
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|------|-------|
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| Product image | Recommend 2048×2048 (square), max 4472×4472 |
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| File | ≤ 20 MB |
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| Format | JPG (photo), PNG (transparent / logo) |
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| Banner | Desktop 1920×1080, mobile 800×1200 |
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**Reality**: Independent store = brand freedom. 5–8 images per product converts measurably better than fewer. Lifestyle imagery converts strongly here. Supports 3D / AR for try-on. Zoom requires > 800×800.
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### Shopee
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| Spec | Value |
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|------|-------|
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| Cover (main) | Recommend 1024×1024, min 500×500, 1:1 |
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| Description images | Min 1000×32, max 12 |
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| Allowed aspect range | 0.5 to 3:2 |
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| Image count | Up to 9 |
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**Reality**: SE Asia values value-for-money — promo text on image is fine (unlike Amazon). Size reference and use scene reduce returns.
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### TikTok Shop (overseas)
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| Spec | Value |
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|------|-------|
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| Main size | Recommend ≥ 800×800, min 600×600 |
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| Aspect | 1:1 or 3:4 |
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| File | ≤ 5 MB |
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| Format | JPG / JPEG / PNG |
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| Main rule | Clear product, no watermark, no border, no promo text |
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| Image count | ≥ 5 multi-angle |
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**Reality**: Short video (9:16, 720×1280+) drives sales. First 3 seconds make or break. UGC review style outperforms polished ads.
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### Etsy
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| Spec | Value |
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|------|-------|
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| Main size | Recommend 2000×2000 |
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| Image count | Up to 10 |
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| Search thumbnail | Cropped to 4:3 horizontal |
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**Reality**: Hand-feel and uniqueness sell. Process images and macro details convert well. Packaging / unboxing matters (gifting). Size reference essential.
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---
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## 海外社交
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### Instagram (Shopping)
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| Spec | Value |
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|------|-------|
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| Post — square | 1080×1080 (1:1) |
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| Post — vertical | 1080×1350 (4:5) — recommended |
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| Post — horizontal | 1080×566 (1.91:1) |
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| Stories | 1080×1920 (9:16) |
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| Reels | 1080×1920 (9:16) |
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| Format | PNG (graphics) / JPG (photo) |
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| 2025 update | 3:4 supported; grid crops to centered 1012×1350 |
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**Reality**: 4:5 vertical wins the feed. Unified visual style is non-negotiable. Reels weighted way above static. Top ~250 px and bottom ~340 px are UI-occluded — keep critical text/logo away.
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### Pinterest
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| Spec | Value |
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|------|-------|
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| Standard Pin | Recommend 1000×1500 (2:3 vertical), min 600×900 |
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| Long Pin | 1000×2100+ allowed but may crop |
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| File | ≤ 20 MB desktop / ≤ 32 MB app |
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| Format | PNG / JPEG |
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**Reality**: 2:3 vertical = best feed real estate. Add a short text title on-image to lift saves. Inspiration / tutorial / comparison content wins. Seasonal content: post 30–45 days early. Image SEO (alt text, description) matters — Pinterest is a visual search engine.
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---
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## Quick Lookup: Spec Comparison
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| Platform | Main aspect | Background rule | Core style |
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|----------|-------------|-----------------|-----------|
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| Taobao | 1:1 (800) or 3:4 (750×1000) | Image #5 white-bg only | Scene / model dominant |
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| Tmall | same | Must include white-bg + transparent | Brand-consistent |
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| JD | same | **Image #1 must be pure white** | Premium + spec |
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| PDD | **750×352 horizontal** main | Strict white-bg image required (480×480) | Clean, no overlay |
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| Douyin | ≥ 480×480, rec 750×750 | No, but real photo required | Content-feel, multi-angle |
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| Xiaohongshu | 3:4 vertical (1080×1440) | No requirement | UGC / lifestyle |
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| Kuaishou | 800×800 | No requirement | Real / down-to-earth |
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| Amazon | ≥ 1000, rec 2000×2000 | **Strict pure white** RGB(255,255,255) | White hero + infographics |
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| Shopify | rec 2048×2048 | Free | Brand-driven |
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| Shopee | rec 1024×1024 | Not required, prefer light | Value + promo overlay |
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| TikTok Shop | ≥ 600×600, rec 800×800 | Not required | UGC + content |
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| Instagram | 1080×1350 (4:5) | Free | High-aesthetic + unified |
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| Pinterest | 1000×1500 (2:3) | Free | Inspirational + tutorial |
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| Etsy | rec 2000×2000 | Prefer light / white | Hand-feel + unique |
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## Category × Platform Emphasis
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Quick lookup for what each platform expects from each category.
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| Category | TB/Tmall | JD | PDD | Douyin | XHS | Amazon |
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|----------|----------|----|----|--------|-----|--------|
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| 女装 | model + white-bg | premium model | value bundle | styling video | lifestyle styling | white-bg + infographic |
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| 家装 | scene + size labels | spec compare | bundle pack | use-scene video | home mood | white-bg + scene |
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| 日用品 | white-bg + function | spec compare | multi-pack | use demo video | recommendation | white-bg + infographic |
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| 宠物 | pet model | function | value pack | cute pet video | cute pet seeding | white-bg + use |
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| 母婴 | warm + cert | safety report | combo set | parenting video | mom review | safety cert + infographic |
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| 数码 | studio tech feel | spec viz | value | unbox / review | tech-good seeding | white-bg + function |
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| 珠宝 | model + macro | material cert | value | wear video | styling | white-bg + worn |
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| 美妆 | texture + 试色 | ingredient compare | combo | swatch video | review | white-bg + swatch |
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| 保健品 | pack + cert | ingredient | family pack | science + product | health share | white-bg + ingredient |
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| 洗护 | texture + ingredient | function compare | bulk value | use-effect video | seeding | white-bg + function |
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| 男装 | model / hanger | premium fabric | bundle | styling video | menswear style | white-bg + infographic |
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| 鞋靴 | multi-angle + on-foot | tech features | value | on-foot video | styling | white-bg + multi-angle |
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| 箱包 | capacity + model | material craft | practical bundle | unbox video | styling | white-bg + interior |
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| 运动 | scene + function | tech specs | value | sport scene video | sport styling | white-bg + function |
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---
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## Source Notes
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Specs above are compiled from public platform documentation and industry guides as of early 2026. Platforms update rules — always cross-check the current official page before bulk-producing for production use.
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