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Resize images for 4K, web and social media

Resize photos to 4K (3840×2160), Full HD, HD, or pick a one-click social preset for Instagram, LinkedIn, YouTube, TikTok and WhatsApp.

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4K
Output
18
Social presets
100%
Private
$0
Free

What is Resize images for 4K, web and social media?

TL;DR: Shrink44 resizes images to any dimension up to 4K with contain / cover / stretch modes and 18 social-media presets — fully in-browser.

The Shrink44 image resizer reproduces photos and graphics at any custom dimension, with three sizing modes (contain, cover, stretch) and a high-quality Canvas downscale algorithm.

18 built-in social presets: Instagram post / story / reel, LinkedIn post / cover, Twitter / X post, TikTok thumbnail, YouTube thumbnail, Facebook post, WhatsApp profile / status, and 4K landscape / portrait.

Resizing during compression is the single most effective way to shrink an image — a 12-megapixel photo cropped to 1920px wide is typically 80% smaller before any quality tradeoff.

How it works

Step-by-step

Compress your file in under a minute — 100% in your browser.

1

Open the Resize tab

Click the Resize & 4K tab on Shrink44.

2

Drop your image

Drag and drop one or many photos.

3

Pick a size

Choose a social preset or enter custom width × height.

4

Choose the fit mode

Contain, cover, or stretch — preview updates live.

5

Download

Save the resized image or share via the share button.

Features

Why use Shrink44 for this

Designed for fast, private, no-signup file size reduction.

18 social presets

Instagram, LinkedIn, YouTube, TikTok and more.

4K-aware

Resize up to 3840×2160 with high-quality Canvas downscale.

Contain / cover / stretch

Pick how your image fits the target frame.

Bulk resize

Apply a preset to 1000+ photos at once.

Combined resize + compress

Smaller dimensions = smaller files.

Private & free

No uploads, no signup.

FAQ

Frequently asked questions

Can I resize to exact dimensions?

Yes — enter any width and height in pixels.

Does Shrink44 support 4K output?

Yes. The Canvas API renders at full resolution; pick the 4K landscape or 4K portrait preset, or enter 3840×2160 manually.

Will resizing affect quality?

Downscaling uses high-quality Canvas resampling. Upscaling beyond the source resolution is possible but will not add detail.

Can I keep aspect ratio?

Yes — pick 'contain' fit mode and Shrink44 keeps proportions, padding the remainder.

Explore

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 Bulk

Bulk Compress

Process 1000+ files at once.

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Convert Image

PNG↔JPG, JPG↔WebP and more.

 OCR

Scan to Text

Extract text from photos.

Ready to compress?

Free forever. 100% private. No signup. Files never leave your device.

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