Can I resize without losing quality?

Enlarging an image always reduces quality since no new pixel data is added. Reducing image size generally preserves quality well. For best results, always resize down rather than up.

Does the image get uploaded to a server?

No. All resizing happens in your browser using the HTML5 Canvas API. Your images never leave your device, making this completely private and secure.

Image Resizer

Q: What are the common social media image sizes?

Instagram post: 1080x1080px. Facebook cover: 820x312px. Twitter header: 1500x500px. YouTube thumbnail: 1280x720px. WhatsApp DP: 500x500px. LinkedIn banner: 1584x396px.

Resize JPG, PNG and WebP images by exact pixels, percentage or social media presets. Lock aspect ratio to avoid distortion. 100% private — nothing uploaded to any server.

Free No Signup 100% Private Aspect Ratio Lock

Image Resizer

Drop image here or click to upload

Supports JPG, PNG and WebP — max 20MB

JPGPNGWebP

📁 -- 📐 Original: -- 💾 --

Width (px)

Height (px)

Aspect ratio is locked — change one dimension to auto-calculate the other. Click the lock to unlock.

Output Format

-- × -- px

Free Online Image Resizer — Resize by Pixels, Percentage or Presets

Our image resizer works entirely in your browser — no server upload, no account required. Resize JPG, PNG and WebP images to exact pixel dimensions, scale by percentage, or use built-in social media presets for Instagram, Facebook, Twitter, YouTube and WhatsApp.

Social Media Image Size Guide

Instagram post: 1080×1080px (square). Instagram Story: 1080×1920px. Facebook cover: 820×312px. Twitter/X header: 1500×500px. YouTube thumbnail: 1280×720px. WhatsApp DP: 500×500px. LinkedIn banner: 1584×396px. Use our presets to resize instantly to these exact sizes.

Frequently Asked Questions

Does resizing reduce image quality?

Reducing image dimensions generally preserves quality well. Enlarging an image beyond its original size reduces quality since no new pixel data can be added. For best results, always resize down rather than up.

What does locking the aspect ratio do?

Locking the aspect ratio ensures the image is not distorted when you change one dimension. When locked, changing the width automatically recalculates the height to maintain the same proportions as the original image.

Is my image uploaded to any server?

No. All resizing happens entirely in your browser using the HTML5 Canvas API. Your images are never uploaded to any server, making this tool completely private and secure.

What are the common social media image sizes?

Instagram post: 1080×1080px. Facebook cover: 820×312px. Twitter header: 1500×500px. YouTube thumbnail: 1280×720px. WhatsApp DP: 500×500px. LinkedIn banner: 1584×396px. All available as one-click presets in our tool.