Image Resizer
Resize JPG, PNG, WebP and HEIC images to exact pixel dimensions, by percentage, or using social media presets for Instagram, YouTube, Facebook, Twitter/X and more — instantly in your browser. 100% private — nothing uploaded, no signup required.
Drop images here
Click to browse — JPG, PNG, WebP · up to 20 images
Why Use ConvertLinx?
100% Private
Images are resized entirely in your browser. Nothing is ever uploaded to any server — your files stay on your device.
Aspect Ratio Lock
Enter width or height and the other dimension updates automatically — no distortion ever, even for batch resizing.
Social Media Presets
One-click presets for Instagram, YouTube, Facebook, Twitter/X and LinkedIn — perfectly sized every time, no guesswork.
3 Simple Steps
Upload Images
Drag & drop or click to upload — single image or up to 20 at once. JPG, PNG, WebP and HEIC supported.
Set Dimensions
Use Pixels for exact size, Percentage to scale proportionally, or Presets for social media platforms.
Download Results
Click Resize and download each file individually or all at once as a ZIP — no account needed.
Why You Need a Free Online Image Resizer
Every platform expects images in different sizes. Instagram needs square or portrait crops, YouTube thumbnails need 1280×720 pixels, Facebook cover photos have their own exact dimensions, and email newsletters need lightweight images that load fast. Resizing manually to the right pixel size saves time, prevents blurry or stretched photos, and keeps your file sizes small for faster uploads.
This free online image resizer works directly in your browser — no software to install, no file uploads, and no account needed. Enter exact pixel dimensions, scale by percentage, or pick a one-click social media preset for perfect results every time.
Resize Images to the Right Size for Every Platform
Different platforms require very different image sizes. Instagram square posts need 1080×1080px, YouTube thumbnails require 1280×720px, Twitter/X post images look best at 1600×900px, and LinkedIn cover photos are 1584×396px. Instead of guessing and reuploading, use the built-in presets to hit the exact dimensions in one click — then download and upload directly with confidence.
Common Problems This Tool Solves
Who Should Use This?
Features
Best Uses for Image Resizing
Frequently Asked Questions
How do I resize an image without losing quality?
Shrinking an image always maintains quality since you're removing pixels. Enlarging beyond original size will reduce sharpness — always work with high-resolution originals for best results.
Can I resize HEIC photos from my iPhone?
Yes — upload your HEIC files directly. They'll be decoded in your browser and resized to your chosen dimensions. Perfect for resizing iPhone photos before sharing on Windows or Android devices.
What does locking the aspect ratio mean?
Aspect ratio is the proportional relationship between width and height. Locking it means when you change one dimension the other adjusts automatically — keeping your image proportional and preventing distortion.
What size should I use for Instagram?
1080×1080 for square posts, 1080×1350 for portrait posts, and 1080×1920 for Stories and Reels. Use the Instagram presets tab for one-click sizing.
Can I resize multiple images at once?
Yes — upload up to 20 images at once and they'll all be resized to the same dimensions. Download individually or use Download All as ZIP.
Can I resize by percentage instead of pixels?
Yes — switch to the Percentage tab and use the slider or quick buttons (25%, 50%, 75%, etc.) to scale images by any percentage from 1% to 300%.
Are my images uploaded to a server when I resize them?
No — all resizing happens entirely in your browser using the HTML5 Canvas API. Your images never leave your device and are never stored on any server.
What image formats can I resize?
JPG, PNG, WebP, and HEIC are all supported as input. You can download the resized result as JPG, PNG, or WebP — whichever suits your needs best.
Can I resize a PNG without losing its transparent background?
Yes — select PNG as the output format before downloading. The resizer preserves transparency in PNG files so your transparent background stays intact after resizing.
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Ready to resize your images?
Single or batch — takes seconds. No signup. No ads.
