✅ 100% Free ⚡ In-Browser

Social Media Image Size Generator

Generate perfectly sized image canvases for Instagram, Facebook, YouTube, and X (Twitter) — instantly in your browser. Add custom colours, gradients, and text overlays, then download as PNG.

Select platform

Choose size preset

Customise canvas

Background type

Primary colour

Secondary colour

Gradient direction

Add text overlay

Text content

Font size 48px

Text colour

Text align

Font weight

V-position

1080 × 1080 px Instagram Post

Preview (scaled)

📐 Canvas Stats

1080

Width px

1080

Height px

1:1

Ratio

1.2

Megapixels

📏 Size Reference

💡 Design Tips

🎨

Keep text large — at least 40px. Most viewers see your image as a small thumbnail first.

📐

Safe zone — keep key content 10% away from edges, especially for Facebook covers where UI overlaps.

🖼️

PNG vs JPEG — PNG preserves sharp edges on logos and text. JPEG is better for photographs.

📱

Instagram Stories — keep text in the middle 60% to avoid the top UI bar and bottom swipe area.

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What Is a Social Media Image Size Generator?

A social media image size generator creates blank, perfectly dimensioned canvases for every major social platform — with no design software required. Whether you need an Instagram post, a Facebook cover photo, a YouTube thumbnail, or an X (Twitter) header, each platform has strict recommended dimensions that affect how your image is cropped, compressed, and displayed across devices.

This tool renders the canvas directly in your browser using the HTML5 Canvas API, so nothing is uploaded to a server. Add a background colour or gradient, overlay your text, and download a full-resolution PNG instantly.

Official Social Media Image Sizes (2025)

Instagram

Square Post: 1080 × 1080 px (1:1) — the standard feed post, works well for both portraits and landscapes when cropped square.
Portrait Post: 1080 × 1350 px (4:5) — takes up more vertical feed space, recommended for maximum visibility.
Story / Reel: 1080 × 1920 px (9:16) — full-screen vertical format. Keep key content in the middle 60% to avoid UI overlap.

Facebook

Cover Photo: 820 × 312 px on desktop, displayed at 640 × 360 on mobile. Upload at 820 × 312 for the best result across both.
Feed Post: 1200 × 630 px (1.91:1) — Facebook's recommended ratio for link preview images and boosted posts.

YouTube

Thumbnail: 1280 × 720 px (16:9, minimum) — must be under 2 MB. This is the most important image for click-through rate on your videos.
Channel Art / Banner: 2560 × 1440 px — displayed differently on TV (2560 × 1440), desktop (2560 × 423), and mobile (1546 × 423). Keep critical content in the centre 1546 × 423 safe zone.

X (Twitter)

Header: 1500 × 500 px (3:1) — the profile banner behind your avatar. Keep important content away from the bottom-left corner where your avatar overlaps.
Post Image: 1600 × 900 px (16:9) — in-feed images are cropped to roughly 2:1, so keep key content in the centre.

Frequently Asked Questions

No. Everything happens entirely in your browser using the HTML5 Canvas API. No data is sent to any server. The downloaded PNG is generated locally on your device.

The tool exports PNG files, which are lossless and ideal for graphics with text, logos, or solid colour areas. If you need JPEG (smaller file size for photographs), you can open the PNG in any image editor and re-save.

The current version supports solid colours and CSS-style gradients as backgrounds. If you want to use a photograph, we recommend downloading the template first, then opening it in a tool like Canva, Figma, or Photoshop to place your image at the correct dimensions.

Facebook crops cover photos differently on desktop (820 × 312) and mobile (640 × 360). The safe area that appears on both is roughly the centre 640 × 312 pixels. Keep your logo and key text inside that central region when designing.

YouTube thumbnails are displayed at 1280 × 720 px but often shown at much smaller sizes in search results and suggested videos. Use large, bold text (at least 60–80px), high contrast colours, and keep any face or key subject centred. Avoid putting text in the bottom-right corner as YouTube overlays the video duration there.

Done!