Every time you create an image, you Google "what size is XX platform" — results are outdated, incomplete, or contradictory. The trial-and-error wastes enormous amounts of time.
This cheat sheet compiles the latest official image specs for 20+ platforms, organized by platform at a glance, regularly updated. Combined with Suried Tools, compress to any target size in one click.
01 Social / Content Platform Image Specs
WeChat Official: Headline cover 900×383px (2.35:1), ≤5 MB | Secondary cover 200×200px (1:1) | Article images width ≤1080px, ≤10 MB each. Suggested: 300–500 KB JPG for headline covers.
Xiaohongshu: Note cover 1080×1440px (3:4) or 1080×1080px (1:1) | ≤20 MB per image | Max 9 images | Suggested 500 KB–1 MB each. Avatar 400×400px.
Douyin/TikTok: Video cover 1080×1920px (9:16) | ≤2 MB JPG/PNG. Note: top/bottom 15% obscured by UI. Avatar 200×200px.
Bilibili: Video cover 1146×717px (16:10) | ≤2 MB | Avatar 300×300px. Article images width ≤ 1000px.
Weibo: Post images ≤20 MB | Recommended 1080px wide | Long images max 1:3 ratio | GIFs ≤5 MB. Avatar 200×200px, background 920×300px.
02 International Social Platform Image Specs
Instagram: Posts 1080×1350px (4:5 optimal) or 1080×1080px (1:1) | Stories 1080×1920px | Avatar 320×320px | Reels cover 1080×1920px. Suggested ≤1 MB JPG.
YouTube: Thumbnails 1280×720px (16:9), min 640px wide, ≤2 MB | Channel banner 2560×1440px (safe area 1546×423px) | Channel avatar 800×800px.
Twitter/X: Tweet images 1600×900px (16:9) | Header 1500×500px (3:1) | Avatar 400×400px | GIFs ≤15 MB / Videos ≤512 MB. Card images 800×418px.
Facebook: Post images 1200×630px | Cover photo 820×312px (desktop) / 640×360px (mobile) | Avatar 170×170px | Stories 1080×1920px. Group cover 1640×856px.
LinkedIn: Post images 1200×627px | Background 1584×396px | Avatar 400×400px | Article cover 1200×644px. Company page logo 300×300px, banner 1128×191px.
03 E-commerce Platform Image Specs
Taobao/Tmall: Main image 800×800px (square), ≤3 MB | Detail page width 750/790px, single image height ≤1546px | SKU image 800×800. Suggested 200–400 KB JPG. Over 500 KB impacts load speed.
JD.com: Main image 800×800px, white background, ≤1 MB | Detail width 750px | SKU image 800×800px | Main image requires product to fill ≥70%.
Pinduoduo: Main image 750×352px or 800×800px, ≤1 MB | Detail width 750px | Requires pure white background, no watermark, no collage.
Amazon: Main image 1600×1600px+ (square), pure white background, ≤10 MB | Up to 9 images | JPEG/TIFF/PNG/GIF | Min 500×500px but 2000px+ recommended for zoom.
Shopee: Product main image 800×800px, recommended 1024×1024px, ≤2 MB | White or light background. Lazada has similar requirements.
E-commerce main images need "fast loading + clear details": for 800×800px images, 200–400 KB is the sweet spot — enough for sharp details without slowing page load.
04 ID Photos & Official Document Image Specs
Chinese 1-inch ID photo: 295×413px (25×35mm @ 300dpi), typically ≤30 KB JPG. 2-inch: 413×579px. Small 2-inch: 413×531px (common for passport/visa).
Chinese passport e-photo: 354×472px, ≤40 KB, JPG, white background. US visa 600×600px, ≤240 KB. UK visa 600×750px. Canadian visa 420×540px.
Exam registration: Civil service ≤30 KB & 130px wide | CET-4/6 ≤20 KB & 192×144px | Teacher cert ≤200 KB & width 114–480px. Requirements vary by province.
Job resumes: Generally ≤200 KB is fine, some online application systems limit to ≤100 KB. 300dpi minimum resolution. LinkedIn avatar 400×400px.
FAQ
Will these specs become outdated? How often are they updated?
Platform specs are typically tweaked annually (especially when new features launch). This cheat sheet is periodically cross-checked against official platform documentation. The year in the title indicates the last verification date. Feedback on outdated specs is welcome.
Why do actual upload limits differ from official docs?
Some platforms don't update docs promptly, or have different limits for different users (regular vs verified vs business). Use actual upload testing as the final reference — this table lists values that work for most users.
If posting to multiple platforms, which standard should I follow?
Design the source file at the largest needed dimensions, then crop and compress per platform. E.g., for Xiaohongshu (3:4) and WeChat (2.35:1), create at 1440×1920px, then crop and export separately. Never force one version onto all platforms.
The uploaded image looks different in color from what I see locally?
Likely a color space issue. Images saved in Adobe RGB or Display P3 may look different on browsers/platforms that don't support wide gamut. Use sRGB color space for all web exports — it's the default web standard.
What if my image is too small to meet the minimum requirement?
Use AI upscaling tools (like waifu2x, Topaz Gigapixel) to enlarge, then use. But results depend on original quality — severely blurry/pixelated images won't upscale well. Best approach is to obtain high-resolution originals from the source.
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This cheat sheet compiles the latest official image specs for 20+ platforms, organized by platform at a glance, regularly updated. Combined with Suried Tools, compress to any target size in one click.