Image Resizer
Resize images directly in your browser with width and height settings, aspect-ratio controls, long-side or short-side rules, and JPEG, PNG, or WebP export. It works well for social posts, blog thumbnails, and product images without uploading files to a server.
Original
Choose an image to show previews.
Resized
Not resized yet
Resize settings
Output
Metadata such as shooting date or location may be removed from the converted image.
What you can do with Image Resizer
- Resize by width and height, aspect ratio, percentage, long side, or short side.
- Choose contain, cover, or stretch modes and export as JPEG, PNG, or WebP.
- Use common presets for social media, web, and ecommerce images.
How to use
- Choose or drag and drop an image.
- Set the size, preset, fit mode, output format, and quality.
- Resize, preview the result, and download it.
How to read the results
After resizing, the preview shows the converted image with your width, height, aspect ratio, and fit mode applied.
The result area shows the output dimensions in pixels and the file size. The chosen output format (JPEG, PNG, or WebP) and quality settings are reflected in the downloaded file.
If you choose a preset, the result matches that target size, such as 1200 x 630 for OGP images.
Ways to use it
Social post resizing
Resize images to common social presets before posting on platforms such as Instagram or X.
Blog and website thumbnails
Convert images to sizes such as 1200 x 630 for OGP or blog thumbnail use.
Product image cleanup
Adjust product or thumbnail images while keeping aspect ratio for ecommerce or catalog pages.
Private browser-only image resizing
Resize images entirely in the browser without uploading files to a server.
How input data is handled
- Images are processed in your browser and are not sent to the server.
- Animated GIFs are handled as still images in this first version.
- Image metadata may be removed during conversion.
FAQ
- Can I keep the aspect ratio?
- Yes. Keep aspect ratio is available for width and height changes.
- Which output formats are supported?
- JPEG, PNG, and WebP are supported.
- Can I use transparent backgrounds?
- Yes, when exporting as PNG or WebP. JPEG does not support transparency.
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