Tinker Tools

Thumbnail Size Calculator for Social Media

Find the perfect image dimensions for YouTube, Instagram, Facebook, Twitter, TikTok, and LinkedIn. Upload an image to crop and resize instantly — processed locally in your browser.

Size Guide

Upload an image to crop & resize

Supports PNG, JPEG, WebP, GIF, BMP

YouTube Image Size Guide
Image TypeWidthHeightAspect Ratio
Profile Picture800px800px1:1
Channel Banner2560px1440px16:9
Video Thumbnail1280px720px16:9
Shorts Thumbnail1080px1920px9:16
All Platforms Quick Reference
YouTube
Profile Picture800×800
Channel Banner2560×1440
Video Thumbnail1280×720
Shorts Thumbnail1080×1920
Instagram
Profile Picture320×320
Square Post1080×1080
Portrait Post1080×1350
Landscape Post1080×566
Story / Reels1080×1920
Facebook
Profile Picture170×170
Cover Photo820×312
Shared Post Image1200×630
Story1080×1920
Event Cover1200×628
Twitter / X
Profile Picture400×400
Header Banner1500×500
In-stream Image1600×900
Card Image1200×628
TikTok
Profile Picture200×200
Video1080×1920
Thumbnail1080×1920
LinkedIn
Profile Picture400×400
Background Photo1584×396
Shared Post Image1200×627
Company Logo300×300
Company Cover1128×191

How it works

1. Choose Platform

Select from YouTube, Instagram, Facebook, Twitter, TikTok, or LinkedIn. View all recommended image sizes at a glance.

6 Platforms

2. Upload & Preview

Upload your image and see a live preview cropped and resized to the exact platform dimensions. Adjust your selection in real time.

100% Private

3. Download

Download the perfectly sized image as PNG with one click. Ready to upload directly to your chosen social media platform.

Pixel Perfect

What Does the Thumbnail Size Tool Do?

This tool combines a reference list of common social-media image sizes with a simple browser-based crop-and-resize workflow. You choose a platform preset, upload an image, and the page generates a PNG preview at the selected dimensions.

The current implementation focuses on preset dimensions and centered cover-style cropping. It does not provide freeform crop handles, text readability scoring, safe-zone overlays, or batch export.

That narrower scope is still useful for everyday tasks such as turning one source image into a YouTube thumbnail, Instagram post, LinkedIn share image, or Facebook cover draft without opening a separate design application.

Key Features and Benefits

  • Built-in platform presets — Choose from presets for YouTube, Instagram, Facebook, Twitter/X, TikTok, and LinkedIn image formats.
  • Instant crop preview — After upload, the browser generates a preview at the selected target size so you can immediately see how the image fits that format.
  • Centered cover-fit resizing — The preview uses a cover-style crop that fills the output canvas while keeping the image centered. This is practical for quick drafts and standard social-media assets.
  • Dimension and aspect ratio reference — The page shows exact pixel sizes and aspect ratios for each selected preset, which is useful even when you are preparing assets in another tool.
  • Browser-local processing — Image handling runs in the browser with Canvas APIs. Your uploaded source image is not sent to an application server.
  • PNG download — The generated preview can be downloaded as a PNG with a descriptive filename based on the selected platform and size.

How to Resize a Thumbnail

  1. 1

    Choose a platform

    Pick the target platform first so the tool knows which set of image types and sizes to show.

  2. 2

    Choose the image type

    Select the specific preset such as video thumbnail, cover image, story, or profile picture.

  3. 3

    Upload your source image

    Add an image from your device. The browser loads it locally and prepares a resized preview.

  4. 4

    Review the preview

    Check how the centered cover-fit crop behaves at the chosen size. If the composition is not acceptable, try a different source image or edit it elsewhere first.

  5. 5

    Download the output

    Download the generated PNG and use it directly or as a draft for further editing.

Expert Tips for Thumbnail Preparation

Because the crop is centered automatically, this tool works best when the subject is already near the middle of the source image.

If your layout depends on precise text placement or safe margins, do the final design pass in a graphics editor after using this tool for the base dimensions.

Social platforms change recommendations over time. Use the preset sizes as a practical reference, but verify the latest platform documentation before a major campaign launch.

Exporting as PNG is convenient, but some platforms or workflows may call for JPEG or WebP afterward. In those cases, use an image conversion step after resizing.

Related Tools

Image Resizer

Resize images to custom dimensions when you need manual width and height control

Image Compressor

Reduce file size after exporting a PNG if the platform has strict upload limits

Social Image Size Guide

Compare a broader list of platform-specific dimensions in reference form

Use this tool when you need a quick preset-based resize and preview. For fine composition, typography, or batch production, treat it as the fast setup step rather than the whole design workflow.

Frequently Asked Questions

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