Image Resizer & Converter
Resize, crop, rotate, watermark and convert images in bulk. Set it up once and apply it to every file in the batch.
A free image resizer and converter lets you change the dimensions, format, and orientation of any image — right in your browser. Upload one or hundreds of files at once, set your target size and format, and download everything in a single ZIP.
REXAI's Image Resizer handles JPG, PNG, WebP, and AVIF in both directions. Resize for social media, crop for product photos, convert PNG to JPG, or rotate scanned documents — no desktop software, no signup, no watermark.
What You Can Do
Resize by pixel or percentage. Set exact dimensions in pixels for platform requirements (Instagram 1080×1080, YouTube thumbnail 1280×720), or scale proportionally by percentage.
Crop to any aspect ratio. Square crops for Instagram, 16:9 for video thumbnails, 4:5 for Pinterest, or custom dimensions for your specific need.
Rotate and flip. Fix sideways photos from phones, flip images horizontally for mirrored layouts, or rotate to any angle.
Convert between formats. JPG to PNG, PNG to WebP, WebP to JPG, or any combination. Each format has strengths — pick the right one for your use case.
Bulk processing. Upload 10, 50, or 200 files and process them all with the same settings in one click. Download individually or as a single ZIP.
How to Use the Image Resizer
1. Upload your images. Drag files into the drop zone or click to browse. Multiple files are processed together with the same settings.
2. Choose your settings. Pick resize mode (dimensions or percentage), output format (keep original or convert), and rotation if needed.
3. Preview and adjust. See the resulting dimensions and estimated file size for each image before downloading.
4. Download. Save each file individually, or click "Download all" to get a ZIP with every processed image.
Which Format Should You Choose?
JPG. Best for photos. Small file sizes, universal support. No transparency.
PNG. Best for screenshots, logos, and graphics with sharp edges. Supports transparency. Larger files.
WebP. Best balance of quality and size for the web. 25–35% smaller than JPG at the same quality. Supported by all modern browsers.
AVIF. Newest format. Even smaller than WebP. Growing browser support — great for forward-looking projects.
Common Image Sizing Requirements
Instagram: 1080×1080 (square post), 1080×1350 (portrait), 1080×1920 (story/Reel)
YouTube: 1280×720 (thumbnail), 2560×1440 (banner)
Facebook: 1200×630 (link preview), 1080×1080 (post)
Twitter/X: 1600×900 (header), 1200×675 (post image)
LinkedIn: 1200×627 (link preview), 1584×396 (banner)
Product photos: 1000×1000 or 2000×2000 (Amazon, Shopify, Etsy)
Who Uses Image Resizing
Social media managers adapt one image for five platforms. E-commerce sellers standardize product photos at scale. Web developers prepare images in multiple formats for responsive design. Photographers resize portfolios for web without losing quality. Bloggers shrink header images before publishing. Anyone who needs a photo smaller, bigger, or in a different format.
Frequently Asked Questions
- Is it free? Yes. Unlimited resizing and conversion, no signup, no watermark.
- Are my images uploaded to a server? No. All processing happens in your browser. Your images never leave your device.
- Will resizing reduce quality? Resizing down (making smaller) preserves quality. Resizing up (making larger) may look softer — the tool uses smooth interpolation to minimize this.
- Can I process multiple files at once? Yes. Upload as many as you like and apply the same settings to all.
- Does it preserve EXIF data? Metadata like camera information is stripped during processing to reduce file size. Save the originals if you need EXIF.
- What's the maximum file size? Up to 20MB per image. No limit on the number of files.
- Does it work on mobile? Yes. Fully functional on any modern browser, including iOS and Android.
- Can I resize GIFs? Static GIFs work. Animated GIFs aren't supported yet.
Resize Your First Image Free
Upload your images above and resize, crop, rotate, or convert them in seconds. Free, private, and no signup — the way image editing should work.