MyAITools

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Image Resizer

Resize an image to exact pixel dimensions, a preset, or a percentage. Aspect ratio stays locked unless you unlock it. Preview and download — no upload.

Drop an image here

or

One image up to 40 MB

This tool runs entirely in your browser — your files are processed locally and are never uploaded to a server. You can even disconnect from the internet after the page loads.

How to resize an image

Five steps to the exact size you need.

  1. Add your image

    Drop a JPG, PNG or WebP onto the zone or click “Browse files”.

  2. Set the new size

    Type exact pixel dimensions, use a preset, or scale by percentage. Keep the aspect-ratio lock on to avoid distortion.

  3. Choose output options

    Pick the output format (JPG, PNG or WebP) and adjust quality for lossy formats.

  4. Resize

    Click “Resize image” and wait a moment for processing.

  5. Download

    Preview the result and click the download button to save it.

What this tool does

Resizing changes an image’s pixel dimensions — how many dots wide and tall it is. That matters constantly: avatars and profile photos demand exact sizes, upload forms reject oversized images, and a 6000-pixel camera photo is overkill for a blog post.

This tool redraws your image at the new dimensions using high-quality canvas scaling in your browser. Set an exact width and height, scale by percentage, or start from a preset. The aspect-ratio lock keeps proportions honest — turn it off only when you genuinely want a specific width and height regardless of distortion.

You also choose the output format, so resizing doubles as a lightweight conversion step. Everything runs locally; your image never leaves the device.

Key features

Exact pixel control

Type the precise width and height you need — ideal for avatars, banners and form requirements.

Aspect-ratio lock

Change one dimension and the other follows, so photos never come out squashed unless you ask for it.

Percentage scaling

Quickly halve or quarter a photo’s dimensions without doing pixel maths.

Format choice on output

Save the resized image as JPG, PNG or WebP, with quality control for lossy formats.

Completely local

Scaling happens in your browser — no upload, no queue, no account.

Phone friendly

Resize a photo right after taking it, before sharing or uploading.

Supported formats and options

Input: JPG, PNG and WebP images up to 40 MB.

Output: your choice of JPG, PNG or WebP at the new dimensions.

  • Sizing: exact width × height, percentage scaling, or presets.
  • Aspect-ratio lock keeps the original proportions.
  • Quality slider applies to JPG and WebP output; PNG stays lossless.

Practical use cases

  • Profile photos and avatars — hit the exact square or pixel dimensions a platform demands.
  • Website images — resize photos to display size so pages load faster and Lighthouse stops complaining.
  • Email signatures and newsletters — shrink logos and photos to mail-friendly dimensions.
  • Upload forms — meet “maximum 1920 px”-style requirements exactly.
  • Thumbnail creation — scale a photo down to a consistent small size for galleries and listings.

Limitations and notes

  • Shrinking looks great; enlarging does not. Scaling a small image up to bigger dimensions cannot recreate detail that is not there — the result will soften.
  • Resizing and cropping are different jobs: to cut out part of an image rather than shrink the whole, use the Image Cropper.
  • Animated images are resized as a single still frame.
  • Extremely large images are decoded into memory by the browser; desktop handles the biggest files best.

Frequently asked questions

Are my images uploaded to a server?

No. Decoding and re-encoding happen on the HTML canvas inside your browser. Your images never leave your device.

Does resizing reduce quality?

Making an image smaller keeps it looking sharp. Enlarging beyond the original size cannot add detail that isn't there, so upscale results can look soft.

What does the aspect-ratio lock do?

When locked, changing the width automatically sets the height (and vice versa) so the image is never stretched or squashed.

Which output format should I pick?

Keep original is usually best. Choose JPG for photos, PNG when you need transparency or pixel-perfect graphics, WebP for a good balance on the web.

Does resizing reduce quality?

Downscaling looks clean and usually improves perceived sharpness while shrinking the file enormously. Upscaling — making an image bigger than its original pixels — always softens it, because the extra detail does not exist. Resize down freely; resize up only when you must.

How do I resize without distorting the image?

Leave the aspect-ratio lock on and change only one dimension — the other follows automatically, preserving the original proportions. Turn the lock off only when a form demands exact dimensions that differ from your photo’s shape, and prefer cropping in that case.

What is the difference between resizing and compressing?

Resizing changes the pixel dimensions; compressing keeps the dimensions but re-encodes the file at lower quality. For the smallest result, resize to the size you actually need first, then compress.

Can I resize several images at once?

This tool processes one image at a time so you can give each its exact dimensions. For batch jobs, resize your key image here, then use the Image Compressor for the rest.

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