Resize Image
Resize images online for free. Set exact dimensions or use social media presets for Instagram, YouTube, Twitter and more with UsePDF.io.
Drop an image here
JPG, PNG, WEBP, GIF, BMP, SVG — up to 50 MB
Upload an image to begin
Upload a photo, choose a preset or custom size, and download a perfectly sized image.
Platform presets
Custom size
1:1 · 1.17 MP
Resize mode
Output format
Quality
90%Frequently Asked Questions
What image formats are supported?
You can upload JPG, PNG, WEBP, GIF, BMP, and SVG images. All processing happens in your browser — nothing is uploaded to our servers.
What are the available platform presets?
We provide presets for Instagram (Post, Story, Landscape), Twitter/X, Facebook, LinkedIn, YouTube, TikTok, WhatsApp, Pinterest, and common standard sizes like Full HD and 4K.
What is the difference between Fill, Fit, and Stretch?
Fill scales and center-crops the image to exactly match the target dimensions — ideal for social media. Fit scales the image to fit entirely within the bounds with padding. Stretch forces the exact dimensions and may distort the image.
Can I set a custom image size?
Yes. Enter any width and height in pixels. Use the lock icon to maintain the original aspect ratio while resizing.
Which output format should I choose?
JPG is best for photos and social media posts. PNG is ideal when you need transparency. WEBP offers the best compression with high quality for web use.
What this tool does
Resize Image changes photo dimensions for social platforms, websites, documents, and uploads that require exact pixel sizes.
Choose a platform preset or enter a custom width and height. Fill, fit, and stretch options help control whether the image is cropped, padded, or resized exactly.
Image resizing runs in the browser for common image formats. UsePDF.io keeps the workflow simple: upload your file, review the result when preview is available, and download the output when processing is complete.
How to use it
- 1Upload an image.
- 2Choose a preset or custom size.
- 3Download the resized image.
Supported formats
File privacy: Files are processed only for the action you request. We avoid using document contents for analytics, and you should only upload files you have permission to process.