About this tool
Set a width, a height, or a percentage and every image you drop in is scaled to match, keeping its aspect ratio so nothing looks squashed. Use the exact mode when a platform demands specific dimensions, such as a 1200 × 630 social preview or a 512 × 512 icon.
The output keeps the original format: JPG stays JPG, PNG stays PNG with transparency intact, and HEIC or AVIF sources are saved as JPG for compatibility. Downscaling uses high-quality smoothing, so shrunken photos stay sharp instead of jagged.
Everything happens inside your browser. Your file is never uploaded to a server: the conversion runs on your own device using WebAssembly, and the result is downloaded straight from memory. Close the tab and nothing is left behind.
How to use it
- Drop your JPG files into the box above, or click to browse. Nothing is uploaded.
- Adjust the options if you want; the defaults suit most files.
- Click the button and wait a moment.
- Download the results individually or all at once as a ZIP.
Frequently asked questions
Can I enlarge an image?
Yes, but upscaling cannot add detail; a small image made larger will look soft. It works fine for modest increases like 150%.
What sizes do social networks want?
Common targets: 1200 × 630 for link previews, 1080 × 1080 for square posts, 1080 × 1920 for stories, 1280 × 720 for video thumbnails.
Does resizing keep transparency?
Yes for PNG and WebP sources. JPG has no transparency to keep.
Is this really free?
Yes. The site is supported by ads, and there are no limits on how many files you convert.
Are my files uploaded anywhere?
No. The converter runs entirely in your browser. Files stay on your device, which also makes it faster than upload-based converters for anything larger than a few megabytes.
Is there a file size limit?
The only limit is your device's memory. Images and audio of any normal size are fine; for video, files under about 500 MB work well on most laptops and phones.
Which browsers are supported?
Current versions of Chrome, Edge, Firefox, and Safari on desktop and mobile. Very old browsers without WebAssembly support will not work.