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Social · compliance preset

YouTube Thumbnail

The exact, validated way to size your photo for Social. Locked to the spec below — guaranteed under the limit, never uploaded.

Quick answer

A YouTube Thumbnail must be 1280×720 px, JPG, ≤ 2048 KB. Upload your photo, FitToKB locks these exact rules and shows a ✅ pass / ❌ fail check — free, in your browser, never uploaded.

Drag & drop images, or browse

JPG · PNG · WebP · HEIC · HEIF — processed privately in your browser

Locked requirement: ≤ 2 MB 1280×720 px JPG

Your compressed images appear here. Nothing is uploaded — everything runs on your device.

Step by step

How to make your YouTube Thumbnail

  1. 1

    Upload your photo

    Drop your image into the tool. It’s processed locally — nothing is uploaded.

  2. 2

    We apply the locked spec

    FitToKB resizes to 1280×720 px, outputs JPG, and compresses into the ≤ 2048 KB range automatically.

  3. 3

    Check the badge & download

    A pass/fail validator confirms the result meets the YouTube Thumbnail requirement, then download it.

Frequently asked questions

What size should a YouTube Thumbnail be?
A YouTube Thumbnail should be 1280×720 px, in JPG format, ≤ 2048 KB. Source: YouTube Help.
How do I resize my photo for Social?
Open this page’s tool, upload your photo, and it is automatically resized to 1280×720 px and compressed to ≤ 2048 KB as JPG. The validator then confirms it meets every rule.
Is my image uploaded to a server?
No. All resizing and compression happen in your browser. Your image is never uploaded, stored or seen by anyone.
Will the file stay under the 2048 KB limit?
Yes. FitToKB only outputs a result at or below 2048 KB, so it fits the upload form.

Related presets

WhatsApp DP (Profile Photo)

640×640 px · ≤1024 KB

LinkedIn Profile Photo

400×400 px · ≤8192 KB

Instagram Profile Photo

320×320 px · ≤2048 KB

Make your YouTube Thumbnail now

Locked to the exact spec, validated, and free. Nothing leaves your browser.

Use the tool above