PostDecks

PostDecks

Preview your social media posts. Export a PDF or PNGs for client sign-off.

@
Cover

Drag to reorder. The first image is the cover.

X (Twitter): 237/280LinkedIn: 237/3,000LI Carousel: 237/3,000Instagram: 237/2,200Facebook: 237/63,206
X (Twitter)3 photos
Maya Chen@mayachen·1h

Just wrapped our summer brand shoot on the Amalfi Coast. Three days of golden light, espresso, and very patient models. Here's one of my favourite frames from sunset on the final evening. Full behind-the-scenes gallery drops this Friday.

24
12
148
9.2K
LinkedIn3 photos
Maya Chen· 1st
Brand Photographer & Creative Director
5h·

Just wrapped our summer brand shoot on the Amalfi Coast. Three days of golden light, espresso, and very patient models. Here's one of my favourite frames from sunset on the final evening. Full…more

248
37 comments · 8 reposts
LI Carousel1080 × 1080
Maya Chen· 1st
Brand Photographer & Creative Director
5h·

Just wrapped our summer brand shoot on the Amalfi Coast. Three days of golden light, espresso, and very patient models. Here's one of my favourite frames from sunset on the final evening. Full…more

1 / 3
248
37 comments · 8 reposts
Instagram1080 × 1440
mayachen
1/3
1,284 likes
mayachen Just wrapped our summer brand shoot on the Amalfi Coast. Three days of golden light, espresso, and very patient models.… more
View all 84 comments
2 hours ago
IG Story3 photos
mayachen2h
Send message
Facebook3 photos
Maya Chen
5h·

Just wrapped our summer brand shoot on the Amalfi Coast. Three days of golden light, espresso, and very patient models. Here's one of my favourite frames from sunset on the final evening. Full behind-the-scenes gallery drops this Friday.

1.2K
84 comments · 12 shares

Preview every major platform. Export one PDF.

A free tool for the agencies and creators who need pixel-accurate previews before anything goes live. No account, no server, no cost.

Why the same post looks different

One caption and one set of images can look completely different from platform to platform. Three things decide how it renders:

Image ratios

Instagram defaults to 3:4 portrait, Facebook and LinkedIn prefer 1.91:1 landscape, X shows 16:9, and Stories fill a full 9:16. Upload one image and every platform crops it differently.

Caption cut-offs

Every platform cuts long captions at a different point. Instagram hides everything past about 125 characters behind a more link, LinkedIn around 210, and Facebook around 477. X shows the whole post but caps a standard account at 280 characters, with more on Premium. PostDecks applies each platform's rule as you type.

Galleries

Instagram builds a swipeable carousel. Facebook and LinkedIn arrange orientation-aware collages. X uses fixed templates. The same set of images renders a different layout everywhere.

How it works

  1. 01

    Upload and compose

    Drag in your images, paste the caption, and set the display name, handle, and LinkedIn headline. Every preview updates live.

  2. 02

    Review every format

    Switch light and dark, change aspect ratios, and filter down to the platforms you are posting to.

  3. 03

    Export and share

    Download one combined PDF proof sheet, or individual PNGs per platform, then send it for sign-off.

Platform specifications

The exact ratios, limits, and truncation points PostDecks renders against.

PlatformRatioLimitTruncation
X16:9280 charsNo truncation
LinkedIn1.91:13,000 chars~210 chars
LinkedIn Carousel1:13,000 chars~210 chars
Instagram3:42,200 chars~125 chars
Instagram Story9:16n/aNo caption
Facebook1.91:163,206 chars~477 chars

Your content stays private

Everything runs in your browser. When you upload an image it is processed locally and never sent to a server. No account, no upload, no storage. Close the tab and the images are gone.

That matters when you are working with unreleased campaign assets. Your client's images and copy stay on your machine through preview and export. Nothing is logged, retained, or visible to anyone but you.

No cookies and no cross-site tracking. Anonymous visit counts come from Vercel Web Analytics, and nothing else is collected. Full detail in the privacy policy.