Can I resize an image without changing the aspect ratio?

Yes. Leave either the width or the height empty and the other value is calculated automatically, or use Percentage or Longest edge mode, both of which always preserve the aspect ratio.

What is the difference between resizing and cropping an image?

Resizing changes the pixel dimensions of the whole image, while cropping removes part of it. Use the image cropper when you need to choose exactly which region to keep, or use the Fill and crop fit mode here to have the trimming done automatically.

Image Resizer

Q: How do I resize an image without losing quality?

Scaling down preserves quality well, and this tool steps images down in halves rather than in one jump, which keeps edges sharp. Enlarging beyond the original size always softens detail because the extra pixels must be invented, which is why upscaling is off by default.

Q: Does resizing an image reduce its file size?

Usually yes, often dramatically, because fewer pixels means less data. If you need to hit a specific file size in kilobytes rather than specific dimensions, use the image compressor instead.

Resize JPG, PNG, WebP and AVIF images directly in your browser. Set exact pixel dimensions, scale by percentage, or pick a ready made social media and print size — then download instantly.

Drop your images here

or browse from your device

JPG, PNG, WebP, AVIF and GIF · up to 40 images · max 40.0 MB each

How to resize an image online

Add your images

Drag and drop up to 40 images at once, or click to browse. JPG, PNG, WebP, AVIF and GIF are supported, and your files never leave your device.

Choose how to resize

Enter exact pixel dimensions, scale by percentage, cap the longest edge, or pick from more than 30 ready-made social media, web and print presets.

Pick a fit mode

Fit inside keeps the whole image, Pad to size adds a background colour, Fill & crop trims the edges to fill the frame exactly, and Stretch ignores the aspect ratio.

Resize and download

Press Resize all, then save images individually or export everything as a single ZIP. No watermarks, no daily limits and no account needed.

Every image is resized locally inside your browser using canvas rendering. We do not upload, process or store your files on any server, which means complete privacy and instant results even on slow connections.

Popular image sizes

Choosing the right dimensions matters: platforms crop or compress anything that does not match their expected ratio. These are the sizes the preset list covers, alongside many more.

Where it is used	Pixel size
Instagram post	1080 × 1080
Instagram story & reel	1080 × 1920
YouTube thumbnail	1280 × 720
Facebook cover	1640 × 664
LinkedIn banner	1584 × 396
Pinterest pin	1000 × 1500
Open Graph preview	1200 × 630
Passport photo (300 DPI)	413 × 531

Understanding the fit modes

Fit inside

Scales the image down until it fits within your dimensions while keeping the original aspect ratio. Nothing is cropped and no padding is added, so the final size may be smaller than requested on one axis. This is the safest option for general use.

Pad to size

Produces exactly the dimensions you asked for by centring the image and filling the leftover space with a colour you choose. Useful when a platform demands a precise canvas, such as a square marketplace listing made from a landscape photograph.

Fill & crop

Scales the image up until it covers the whole frame, then trims the overflow evenly from the edges. Best for banners and thumbnails where filling the space matters more than keeping every part of the image.

Stretch

Forces the exact dimensions by distorting the image. Rarely what you want for photographs, but occasionally useful for textures and backgrounds.

Benefits

Resize by exact pixels, by percentage, by longest edge, or by preset.
More than 30 built-in social media, web, print and document presets.
Batch resize up to 40 images with one click.
Four fit modes covering padding, cropping and stretching.
Choose the padding colour for letterboxed output.
Convert format while resizing, with a quality control for JPEG, WebP and AVIF.
High quality step-down scaling that keeps detail sharp.
No upload, no storage, no watermark, no signup and no daily limit.

Frequently asked questions

How do I resize an image without losing quality?

Scaling down is essentially lossless in perceptual terms, and this tool steps the image down in halves rather than in one jump, which keeps edges crisp. Enlarging beyond the original size always softens detail, because the extra pixels have to be invented — that is why the upscale option is off by default.

Can I resize without changing the aspect ratio?

Yes. Leave either the width or the height empty and the other value is calculated for you, or use Percentage or Longest edge mode, both of which always preserve the ratio.

Are my images uploaded to a server?

No. Everything runs in your browser using the HTML canvas API. Your images are never transmitted, logged or stored anywhere.

Can I resize many images at once?

Yes. Add up to 40 images per batch, apply one setting to all of them, and download the results as a single ZIP archive.

What is the difference between resizing and cropping?

Resizing changes the pixel dimensions of the whole image, while cropping removes part of it. If you need to choose exactly which region to keep, use the image cropper instead — or use Fill & crop here to have the trimming done automatically.

Does resizing reduce the file size?

Usually yes, and often dramatically, because fewer pixels means less data. If you need to hit a specific file size in kilobytes rather than specific dimensions, the image compressor is the better tool.

Does it work on mobile?

Yes. The tool is fully responsive, and on phones the resize controls appear in a floating bar at the bottom of the screen so they are always within reach.

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