Resize JPG, PNG, and WebP Images
Resize images by exact width and height, keep aspect ratio, and export JPG, PNG or WebP. Your file stays in your browser.
Related guides: YouTube Thumbnail Size and Dimensions
How to Use Free Image Resizer
Free Image Resizer changes real image dimensions for web pages, forms, thumbnails, email attachments, and social posts.
- Load the actual image so pixel dimensions, subject position, and detail level match the final use.
- Enter the target width and height from the destination, then keep aspect ratio unless stretching is intentional.
- Resize once, compare sharpness and framing, and adjust dimensions before exporting the final copy.
- Enlarging small images makes blur, pixelation, and compression damage more obvious.
- Include the final pixel size in the filename so resized copies are easy to identify.
Things to Check
- Enlarging small images makes blur more obvious.
- High-megapixel images can consume canvas memory while resizing; reduce one large photo at a time on phones.
- Preview the resized image in the layout, email, or upload form that requires those dimensions.
Helpful FAQ
When is this tool most useful?
Use it when a website, marketplace, email, or form needs exact pixel dimensions or smaller image files.
What should I inspect before using the output?
Check width, height, aspect ratio, sharpness, subject position, and whether text remains readable.
Does this replace a specialist editor?
For print resizing, advanced sharpening, or color-managed exports, use professional image software.
Related Size and Crop Tools
Maintained by Taimour Husnain.
Change JPEG dimensions without promising new detail
Enter the required width or height and keep aspect ratio enabled to avoid stretching. Enlarging a JPEG adds pixels through browser resampling but cannot reconstruct fine detail, remove compression damage, or guarantee the same visual quality as a higher-resolution source.
This page handles one image at a time and does not bulk-resize a folder. For many source files, process carefully in a dedicated batch editor and review orientation, metadata, color profile, crop, sharpening, and output quality.
Batch resize multiple images
To resize a batch of images, load each one into the resizer above, set the target dimensions, and download individually. For processing many files at once, keep the aspect ratio locked and use consistent dimensions across all images. This ensures uniform sizing for galleries, product listings, and social media grids.
For bulk resize workflows, process images in groups of 5-10. Use the same width (e.g., 1200px for web, 800px for thumbnails) and let the aspect ratio adjust height automatically. After resizing, compress with the Image Compressor for optimal file sizes. For canvas-specific resizing (adding padding or fitting to exact dimensions), use the Circle Crop tool.
Resize an image for a Facebook cover
Facebook cover photo dimensions: 820x312 pixels on desktop, 640x360 on mobile. The safe zone (visible on both) is approximately 640x312 centered. Export at 2x resolution (1640x624) for crisp display on retina screens.
Upload your image to the resizer above, enter 820 for width and 312 for height, and download the result. Enable aspect ratio lock if the source image is much larger than the target — the tool will crop to fit. For Facebook profile pictures, use 170x170 pixels. For Instagram posts, use 1080x1080 (square) or 1080x1350 (portrait).
Related tools and guides
- Resize images for social media — Review common platform dimensions and cropping considerations.
- Rotate or flip before resizing — Correct orientation before choosing final dimensions.