Need a smaller photo for an online form, application, or website? Use this image KB resizer to change image dimensions, adjust output quality, and use the available target-size option when you need a file around a particular KB limit. Supports JPG, PNG and WebP, with resizing handled in your browser.
Add an image above to unlock size, format and quality controls.
All included, free: unlimited daily processing, batch resize up to 100 images at once, larger files, advanced compression, smart resize, enhancement, presets, ZIP downloads and history.
Add an image to see the resized preview.
Done. What next?
Your format, quality and ratio lock are remembered on this device.
Premium removes the daily processing limit and unlocks batch processing, larger files, advanced compression, presets and one-click ZIP downloads.
Nothing here yet — images you download will show up here.
No sign-up is required for the standard image-resizing features. Premium-only features are marked separately.
| Feature | Included |
|---|---|
| Resize images | ✓ |
| JPG, PNG, WebP, AVIF | ✓ |
| Resize by pixels / percentage | ✓ |
| Maintain aspect ratio + custom width/height | ✓ |
| Advanced compression + smart quality | ✓ |
| Unlimited daily processing | ✓ |
| Maximum file size | 50 MB+ |
| Batch resize | ✓ up to 100 |
| Exact file-size targeting | ✓ |
| Preset + social-media sizes | ✓ |
| Export DPI control | ✓ |
| Remove metadata | ✓ |
| ZIP download for batches | ✓ |
| Processing history (stored locally in your browser) | ✓ |
| Commercial use | ✓ |
This tool runs entirely in your browser using the canvas API — no account and no payment are required for any feature on this page.
Resize photos and pictures online for free by exact pixels or percentage. Keep the aspect ratio, choose JPG, PNG, or WebP, and prepare images for websites, forms, profiles, email, and everyday uploads.
An image resizer simply changes the width and height of a picture. It comes in handy when a photo is much larger than the space where you want to use it, or when a website asks for a particular size. For example, you can turn a 2000 × 1500 pixel photo into a 1000 × 750 pixel version while keeping the same 4:3 shape.
You do not need a full photo editor for a simple job like this. Enter the width and height you want, or use a percentage to scale the picture up or down. It is useful for everyday jobs such as preparing photos for websites, email attachments, forms, profiles, and uploads.
A photo straight from a phone or camera is often much larger than you actually need. Resizing gives you a practical way to make it fit the place where you want to use it, without changing the whole picture.
Some forms, websites, marketplaces, and content systems have image dimension or file-size limits. Resizing a photo before uploading can help it fit those requirements, especially when you need to resize an image for an online form or application.
A camera photo can be much larger than the space where it will appear on a webpage. Using an image resizer online to reduce its dimensions can make it more suitable for a website while avoiding unnecessarily large image dimensions.
Profile pictures, avatars, thumbnails, and social images often work best at specific dimensions. Resize a photo to the recommended size before uploading it to Instagram, Facebook, WhatsApp, or another platform.
Signature pixel resize: If an application asks for a signature with specific width and height, enter those dimensions in pixels and keep the aspect ratio locked when the original proportions need to stay natural.
You can resize JPG, PNG, and WebP images online for different types of projects. The best format depends on what the image contains and how you plan to use it.
| Format | Common use | What to consider |
|---|---|---|
| JPG / JPEG | Photos and everyday images | Good for photographs and usually produces smaller files than uncompressed formats. |
| PNG | Logos, graphics, screenshots | Useful when transparency or sharp graphic details need to be preserved. |
| WebP | Web images and modern websites | Designed for efficient web delivery while supporting both lossy and lossless compression. |
| Photo | Profiles, forms, applications | Choose dimensions based on the destination rather than using the original camera size. |
Resizing changes the pixel dimensions. If you also need a smaller file in KB or MB, you may need to adjust the image quality or use image compression as well. In other words, resizing an image and reducing its file size are related but different tasks.
Some forms have two rules for your photo: it must be a certain width and height, and it must stay under a file-size limit such as 100 KB. Set the pixel dimensions first, then use the quality setting or the available target-size controls to help meet the KB limit. Pixels and KB measure different things, so always check the final file before uploading it.
Pixels describe width and height, such as 1200 × 800. KB describes the amount of storage used by the output file. If a form requires both, set the required pixels first and then check the resulting file size.
Reducing an image is usually less demanding than enlarging it. Keep the aspect ratio locked and avoid making a small original much larger if preserving detail matters.
Resizing a picture changes its width and height in pixels. Making a large photo smaller is usually simple. Enlarging a small photo is trickier because new pixels have to be created, and the result may look less sharp.
Pixel dimensions describe an image's width and height, such as 1920 × 1080. File size describes how much storage the image uses, such as 250 KB or 2 MB. That is why “resize image in KB” and “image size in pixels and KB” are related searches, but they do not mean the same setting. Reducing dimensions often reduces file size, but the final file size also depends on the image format and quality setting. If a website requires a particular KB limit, check that requirement separately after resizing.
Aspect ratio is the relationship between a photo’s width and height. When it is locked, changing one dimension adjusts the other proportionally. This helps keep people and objects looking natural instead of stretched.
Once you choose a photo, your browser redraws it at the dimensions you selected and prepares the output in your chosen format. The resizing happens on your device, so the tool does not need to send your image to a remote image-processing service.
Different destinations need different image sizes. This image resizer lets you set the dimensions directly instead of guessing from the original photo. For example, you can change a large camera image to a smaller website image, create a square profile picture, or prepare a photo for an online form.
Enter the width and height you need in pixels. When Lock aspect ratio is enabled, changing one dimension keeps the original proportions, helping prevent stretched or squashed images.
A 1200 × 800 image and a 300 KB image describe different things: one is pixel dimensions and the other is file size. If you need a smaller KB or MB file after resizing, adjust output quality or use the Image Compressor.
JPG is commonly useful for photographs, PNG is useful when transparency or crisp graphics matter, and WebP is a practical choice for many web images. You can also convert formats with the Image Converter.
If a website, application or form specifies image dimensions, resize the image before uploading rather than relying on the destination to scale it automatically. Always check the destination's own requirements.
Everything happens locally in your browser using the canvas API. The image is processed on your device rather than being uploaded to a server by the resizing process. Your local processing history remains in the browser and can be cleared there.
This tool changes image dimensions; it does not replace cropping when you need to remove part of a picture. Enlarging an image substantially can reduce visible sharpness. Very large source images may also take longer to process because the work is performed in the browser.
Quick answers about resizing photos in pixels, reducing image size in KB, and preparing images for online forms.
Choose or drop an image into the resizer, enter the new width and height in pixels or select a percentage, keep the aspect ratio locked if needed, choose an output format, and download the result.
Yes. You can resize supported JPG, PNG, and WebP images and choose an available output format before downloading.
If target-size controls are available on your plan, you can select options such as 100 KB or 250 KB and let smart quality optimization work toward that limit. The final size can vary with the image and format, so check the downloaded file. You can also try the Image Compressor to reduce file size.
Keep Lock aspect ratio enabled so the height updates proportionally when you change the width, or the width updates when you change the height.
The resizing process runs locally in your browser. The image is processed on your device rather than uploaded by the resizing tool.
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