Can I resize an image while keeping its aspect ratio?

Yes. Select an image and leave Lock aspect ratio enabled. Changing the width or height will automatically calculate the other dimension from the original proportions.

Private browser tool

Resize images online

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

Use the largest dimensions needed for your destination, choose JPG or WebP for photographs, and increase the quality setting when exporting. Resizing to smaller dimensions can still reduce detail.

Q: Does this image resizer upload my files?

No. Image loading, previewing, resizing, and export happen locally in your browser. Your source image does not leave your device.

Change an image's dimensions without uploading it. Everything happens locally in your browser.

↗ Choose an image or drag and drop it here

JPG, PNG, WebP, GIF, and other browser-supported images

Preset workflow

Choose a workflow to load useful dimensions and export settings.

Width (px) Height (px)

Quick sizes

Lock aspect ratio

Advanced options

Output format Quality 90% Resize mode

Validate upload requirements (optional)

Add limits from the form or website you are submitting to. Dimension checks update as you work; the file-size limit is checked when you export.

Max width Max height

Max file size (KB) Required format Output filename

Image resizing guide

How to resize an image online

Use this free image resizer to prepare one JPG, PNG, WebP, GIF, or other browser-supported image at a time. Set exact pixels, choose social media, marketplace, job application, wallpaper, profile picture, print, or pixel-art presets, preview the actual output, position a crop, rotate or flip the image, choose a JPG background, validate upload limits, and download the result without uploading your file.

Upload your image

Choose an image or drag and drop it into the tool. The original dimensions appear beside a live preview that updates as you change the output.

Set the dimensions

Enter exact pixels, use a percentage, or choose a workflow preset. Lock the aspect ratio to prevent distortion, swap width and height when needed, or use Fill and crop for a fixed frame.

Preview and download

Check the actual output preview, choose a crop position or background color when needed, adjust quality or advanced options, then select Resize and download. This tool processes one image per export.

Choose the right resize settings

Keep the aspect ratio

Keep Lock aspect ratio enabled when resizing a photo or illustration. This keeps the image proportional and prevents stretching or squashing.

Resize to exact pixels

Enter the precise width and height required by a website, profile, marketplace listing, email, or document. Use Fit inside dimensions when the whole image must remain visible, Fill and crop when the frame should be full, or Fit and pad when you want to preserve the complete image with a white background.

Position a crop

When using Fill and crop, choose a top, center, bottom, left, right, or corner position so the important part of the image stays in frame. The canvas preview shows the exact crop that will be exported.

Select an output format

JPG is a practical choice for photographs, PNG suits transparency and sharp graphics, and WebP is often efficient for modern websites. Adjust JPG or WebP quality when you need to balance detail and file size.

Choose a background and orientation

Choose a background color when exporting a transparent image as JPG or when padding an image. Use Rotate 90°, Flip horizontal, or Swap width and height to prepare the desired orientation.

Check upload requirements

Open Validate upload requirements to enter maximum width, height, file-size, required format, and filename rules. The Government upload preset provides starting values for a common application workflow, but you should replace them with the limits from the specific agency or form. Download a plain-text validation report when needed.

Use destination presets

Social media, marketplace, job application, wallpaper, profile picture, and print presets provide practical target sizes. You can still edit the dimensions and choose a different output format.

Common reasons to resize an image

Optimize images for websites

Smaller dimensions can make pages load faster and help an image fit neatly into a responsive layout.

Prepare social media images

Create a copy with the pixel dimensions recommended for a profile picture, post, banner, or thumbnail.

Prepare images for applications and listings

Job, marketplace, and social presets help you create a correctly sized copy for an application, listing, post, profile, email attachment, or portfolio.

Prepare print and pixel art

Print mode converts paper dimensions and DPI into pixels and warns when the source may be too small. Pixel-art mode uses nearest-neighbor scaling and integer factors to keep hard edges crisp.

Is this image resizer private?

Yes. The image is decoded, resized, previewed, and exported locally in your browser. Monthly Basis does not upload or store your source image, making this a convenient option for private and sensitive files.

Frequently asked questions

How do I resize an image online?

Choose an image, enter the desired width and height in pixels, keep Lock aspect ratio enabled when appropriate, and select Resize and download. You can also use a quick percentage preset.

How can I resize an image without losing quality?

Resize only as much as needed, use a suitable output format, and increase the quality setting for JPG or WebP. Reducing dimensions may remove detail that cannot be recovered.

Can I resize an image while keeping its proportions?

Yes. Leave Lock aspect ratio enabled and change either the width or height. The other dimension is calculated from the original proportions.

Can I check image upload requirements?

Yes. Open Validate upload requirements or choose the Government upload preset, then enter the limits from the specific form. You can check maximum width, height, file size, required output format, and filename format, and download a validation report. Preset values are starting points, not official agency requirements.

Can I rotate, flip, crop, or pad an image?

Yes. Advanced options include 90-degree rotation, horizontal flipping, Stretch to dimensions, Fit inside dimensions, Fill and crop, and Fit and pad. Fill and crop also includes position controls, and the live canvas preview shows the result.

Can I swap the width and height?

Yes. Select Swap width and height to switch the output orientation, then adjust the dimensions or resize mode as needed.

How do I choose a background color?

Use Background color in Advanced options when exporting to JPG or using Fit and pad. JPG cannot preserve transparency, so the selected color replaces transparent areas.

What presets are available?

Presets cover social media, Etsy, eBay, Amazon, Shopify, Depop, Facebook Marketplace, job applications, government uploads, desktop and mobile wallpapers, profile pictures, common print sizes, and pixel art. They set starting dimensions or validation values that you can adjust before downloading. Government preset values are not official requirements.

Can I resize an image for printing?

Yes. Select Print size, choose paper dimensions and DPI, and the tool calculates the required pixels. It warns when the source image is smaller than the requested output; the exported file is still a browser-generated pixel image.

Can I resize pixel art without blurry edges?

Yes. Select Pixel art and use an integer scale. The tool uses nearest-neighbor interpolation and PNG output to preserve crisp edges and transparency.

Does the tool process multiple images?

No. The current workflow intentionally processes one image at a time, so you can review each crop, format, and validation result before downloading.

Does this image resizer upload my files?

No. The entire resizing workflow runs in your browser, so your source image does not leave your device.