PixelSpec
Verified

Every social media image size, exact and current

The exact pixels, aspect ratio and safe zone for 51 sizes on 18 platforms, and a resizer that runs in your browser. No uploads, no accounts.

Drop images, paste, or click to browse
Preloaded to 1080 by 1080 for a square post. Add one file or several. Everything runs in your browser.

Export one image to every platform size with the full resizer: batch files, safe zones and every format.

Straight to the number, with the resizer preloaded on every page.

See the full cheat sheet

Exact sizes and ratios

Searching by the number? Every platform that uses it, on one page.

How aspect ratios work

By pixel size

By aspect ratio

Browse by platform

Every asset for each network, kept up to date.

Instagram8YouTube4Facebook6LinkedIn5X (Twitter)4TikTok3Pinterest3Discord3Twitch3Etsy1Google Forms1Eventbrite1Snapchat1Threads2WhatsApp1Telegram1Reddit2Bluesky2

Every size, one click away

All 51 sizes across 18 platforms, with the exact pixels next to each one.

Compare them in one table

Instagram

YouTube

Facebook

LinkedIn

X (Twitter)

TikTok

Pinterest

Discord

Twitch

Etsy

Google Forms

Eventbrite

Snapchat

Threads

WhatsApp

Telegram

Reddit

Bluesky

Tools

All client-side. Your files never leave the tab.

Image resizer
Resize to any dimensions, keep the ratio, export JPG, PNG or WebP.
Pixels to inches
Print size in inches and centimetres from pixels and DPI.
Reduce image size
Shrink the file weight in KB without leaving the browser.
Aspect ratio calculator
Solve any missing width or height for a target ratio.
Thumbnail downloader
Grab any YouTube thumbnail in full resolution from its link.
All tools
Every free tool on one page, all running in your browser.

What changed

Platforms move their sizes. Every correction here is dated and public.

Full changelog
  1. Corrected the Instagram feed ceiling in nine places. And 16 more changes.
  2. Corrected the Instagram profile grid: tiles moved from 1:1 squares to 3:4 portrait previews in early 2025, so a 4:5 post loses about 34 px from each side there rather than being shown as a square. And 2 more changes.
  3. Grew the reference to 51 sizes across 18 platforms, adding Bluesky, Threads, Reddit, Telegram, WhatsApp, Snapchat, Eventbrite, Google Forms and the Meta, TikTok and Pinterest ad formats. And 2 more changes.

Follow every change with the Atom feed

Why PixelSpec

Answer first

The exact pixels, ratio and safe zone are in the first thing you see. No scrolling past a template gallery.

Actually current, and labelled

Every spec carries a last-verified date and says whether the platform publishes that number itself or whether it is a widely used convention.

Private by design

The resizer uses your browser canvas. Images are never uploaded to a server, so nothing leaves your device.

Open data

A free JSON API exposes every spec so you can build the sizes into your own tools. No key needed.