/50-asset-resize

name: 50-asset-resize
description: "Dung khi da co MOT master design va can ra du kich thuoc cho tat ca kenh — bang kich thuoc chuan 2025-2026 cho feed, story, reel, cover, placement ads; 3 cach xu ly scale-crop, re-compose, rebuild; quy tac safe zone va cach dat ten file. Kich hoat khi user nhac 'resize asset', 'du kich thuoc', 'adapt kich thuoc', 'bang kich thuoc chuan', 'safe zone', 'anh bi cat mat chu tren story', 'mot anh dang duoc may cho'. Khong dung cho — thiet ke moi tu concept thi dung skill 42-brief-hinh-anh; asset gap khi campaign dang chay thi dung skill 48-quick-visual-brief; liet ke toan bo asset cua campaign thi dung skill 41-campaign-asset-list."
metadata:
  version: 1.0.1
  category: operations
license: MIT
triggers:
  - "resize asset"
  - "resize design"
  - "du kich thuoc"
  - "adapt kich thuoc"
  - "bang kich thuoc chuan"
  - "safe zone"
  - "repurpose design"
output: "File .md — resize map theo kenh voi strategy va priority tung kich thuoc, quy tac re-compose, safe zone, naming + folder, checklist final. Designer resize xong khong can hoi lai."
related:
  - 41-campaign-asset-list
  - 42-brief-hinh-anh
  - 48-quick-visual-brief
  - 46-brand-guideline
  - 21-audit-ads-performance

Asset Resize

> Resize khong phai keo to keo nho — moi ti le can re-compose de hierarchy van dung. 1 master design tot → 10+ variants: day la khau tiet kiem thoi gian nhieu nhat cua design production, va la viec dau tien sau campaign (repurpose winner o D+2).

Thu thap thong tin

Doc asset list (`41-campaign-asset-list`) neu co. Neu thieu, hoi toi da 4 cau:

1. **Master design la gi?** Link file goc (Canva/Figma) + kich thuoc va kenh ban dau? 2. **Can resize ra kenh / kich thuoc nao?** Liet ke het — hay lay theo asset list? 3. **Element nao khong duoc mat?** Text, CTA, logo, khuon mat, san pham — co element nao gan canh khong? 4. **Duoc phep crop noi dung khong,** hay phai giu nguyen toan bo?

Nguyen tac

1. **Luon resize tu file goc (master)** — khong resize tu file da resize (chat luong giam dan). 2. **Element quan trong khong duoc crop o bat ky kich thuoc nao** — focal point, CTA, logo phai con nguyen. 3. **Moi ratio can chien luoc rieng** — khong ap 1 cach cho tat ca. 4. **Khong giu du noi dung sau resize → bao Leader quyet dinh bo element nao,** khong tu quyet. 5. **Repurpose winner ngay sau campaign (D+2)** — de lau mat context. 6. **Cap nhat trang thai vao asset list** sau moi kich thuoc xong.

Quy trinh

Buoc 1 — Phan tich master

Xac dinh: focal point la gi; safe zone cua tung element (text, CTA, logo cach canh bao nhieu); dieu gi CO THE crop (background, texture) va KHONG DUOC crop (message, khuon mat, san pham, CTA).

Buoc 2 — Chon strategy cho tung kich thuoc dich

| Strategy | Khi nao dung | Cach lam | |----------|--------------|----------| | Scale & Crop | Ratio gan nhau (1:1 → 4:5, 16:9 → 1.91:1) | Giu nguyen layout, crop bot background | | Re-compose | Ratio khac vua (1:1 → 16:9, landscape → cover) | Dich chuyen element de fit ratio moi, giu hierarchy | | Rebuild | Ratio khac han (1:1 → 9:16, feed → email) | Lam lai tu dau tren canvas moi, giu concept + mau + copy |

Buoc 3 — Resize theo thu tu uu tien

Lam kich thuoc kenh chinh truoc (thuong Feed 1:1), sau do den cac kich thuoc con lai theo priority trong resize map.

Buoc 4 — Kiem tra, dat ten, upload, update

Check tung file theo final checklist → dat ten dung convention → upload dung subfolder → update trang thai asset list.

Bang kich thuoc chuan 2025-2026

Social media

| Loai | Kich thuoc | Ti le | Kenh | Ghi chu | |------|-----------|-------|------|---------| | Feed post vuong | 1080x1080px | 1:1 | Facebook, Instagram | Kich thuoc lam truoc tien | | Feed post doc | 1080x1350px | 4:5 | Instagram, Facebook | Chiem nhieu man hinh hon tren mobile | | Story / Reels | 1080x1920px | 9:16 | FB/IG Story, Reels | Safe zone 250px top/bottom | | TikTok video/thumbnail | 1080x1920px | 9:16 | TikTok | Safe zone 150px top / 300px bottom | | Facebook cover | 820x312px | ~2.6:1 | FB Page | Mobile crop 2 ben — de noi dung o giua | | LinkedIn post | 1200x627px | ~1.91:1 | LinkedIn | | | YouTube thumbnail | 1280x720px | 16:9 | YouTube | |

Ads (Meta)

| Loai | Kich thuoc | Ghi chu | |------|-----------|---------| | Feed ads | 1080x1080px | Dung cho ca FB + IG | | Story ads | 1080x1920px | Noi dung cach mep ~14% | | Carousel | 1080x1080px | Toi thieu 2, toi da 10 card | | Link post banner | 1200x628px | |

Email / Zalo / Website

| Loai | Kich thuoc | Ti le | Strategy thuong dung | |------|-----------|-------|----------------------| | Email header | 600x200px | 3:1 | Rebuild | | Email hero | 600x400px | 3:2 | Scale & Crop | | Zalo OA cover | 1200x500px | 12:5 | Scale & Crop | | Website hero desktop | 1440x600px | 2.4:1 | Re-compose | | Website hero mobile | 375x300px | 5:4 | Rebuild |

Tai lieu

| Loai | Kich thuoc | Dung khi | |------|-----------|----------| | Slide deck 16:9 | 1920x1080px | Presentation, pitch | | A4 doc / ngang | 210x297mm / 297x210mm | Report, proposal in |

Quy tac re-compose

**Landscape / vuong → doc (→ 9:16):**

• Logo: giu vi tri theo brand guideline (thuong bottom-right)
• Headline: chuyen len top 1/3
• CTA: luon o bottom 1/3 nhung tren safe zone
• Safe zone story/reels: 250px top/bottom; TikTok: 150px top / 300px bottom

**Vuong → email (600px):**

• Tang font size neu text qua nho o width moi
• Don gian hoa visual — bot element phu
• CTA button toi thieu 44x44px

**→ cover (FB/Zalo):**

• Noi dung chinh don vao vung giua — 2 ben se bi crop tren mobile
• Khong dat text sat mep

Naming va folder

• Ten file: `[Campaign]_[Kenh]_[KichThuoc]_[Version]_[Status].jpg`
• Vi du: `KhoaHocQ3_FB_1080x1080_v1_APPROVED.jpg`
• Folder:

/[Brand]/Campaigns/[TenCampaign]/Assets/Final/
  Facebook/  TikTok/  Email/  Zalo/  Website/  Archive/

Cau truc ket qua

Ten file: `asset-resize-[campaign]-[YYYYMMDD].md`

# Resize Map — [Ten campaign]

## Master d