Resize Image
Resize images by pixels, percentage or social media presets like Instagram and YouTube. Free batch image resizer that works in your browser with no upload.
- No upload — 100% private
- Instant, on your device
- Free, no sign-up
- Works offline once loaded
How it works
How to use Resize Image
Drop the images you want to resize.
Choose Pixels (with aspect-ratio lock), Percent, or a preset such as Instagram post or YouTube thumbnail.
For presets, pick whether to crop to fill, fit inside with padding, or stretch.
Download the resized images one by one or as a .zip.
Why use it
Why use our Resize Image tool
Three ways to resize
Exact pixels with an aspect-ratio lock, a percentage scale, or one-click presets for every major social network.
Smart fit modes
Crop to fill, fit inside with a padding colour (or transparent), or stretch — whichever suits your layout.
Sharp downscaling
Large reductions are done in several high-quality steps, avoiding the jagged edges of a single-pass resize.
Batch with consistent output
Resize a whole folder to the same width or preset and download everything as one zip.
Choose the format
Keep the original format or save as JPG, PNG, WebP (or AVIF where your browser supports it).
FAQ
Frequently asked questions
How do I resize without distorting the image?
Keep the aspect-ratio lock on in Pixels mode, or use Percent. For presets with a different shape, choose “Crop to fill” or “Fit inside” instead of “Stretch”.
What size should an Instagram post be?
1080×1080 for square posts, 1080×1350 for portrait (4:5) and 1080×1920 for Stories and Reels. All three are built-in presets.
Can I make an image bigger?
Yes — set a larger width or a percentage above 100%. Upscaling can't add real detail, so expect a softer image when enlarging a lot.
Does resizing reduce the file size?
Usually, a lot: halving the width and height cuts the number of pixels by 75%. For even smaller files, also try our image compressor.
Is there a limit on image size or count?
There's no fixed limit. Very large images (over ~16,000 px on a side) may exceed what your browser's canvas can handle, especially on phones.
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