Upload a JPG, PNG, or WebP image and use this resizer to change its width, height, or percentage scale. Keep aspect ratio locked to avoid distortion, choose fit or fill, then download the resized image. Processing happens locally in your browser.
✓ Works in your browser✓ No signup✓ JPG, PNG & WebP
Drop your images hereor select files from your deviceJPG, PNG & WebP · Max file size: 30 MB · Up to 20 files
✓Private by design Your images are processed locally and never uploaded.
Settings
Optimize your images
Results
Your optimized images
Result
What you get after processing
The output image uses the dimensions you set. Fit keeps the entire original visible inside the target frame, while fill creates the exact frame with a centered crop. The download keeps your selected output format.
How it works
From original to optimized in seconds
UploadChoose, drop, or paste one or more JPG, PNG, or WebP images.
Set your targetEnter exact dimensions, percentage, and fit mode.
Process locallyYour browser works from the original pixels; image files are not uploaded.
DownloadReview original and optimized previews, then save one image or a ZIP.
Use cases
Common reasons to use this tool
Create avatars, profile photos, and product images with exact pixel dimensions.
Prepare social posts, thumbnails, banners, and presentation images.
Avoid distortion by preserving aspect ratio or using a controlled crop.
Technical details
Image resizing changes the width and height of an image, usually measured in pixels. PixelPerfect draws the result once from the original image to avoid repeated generation loss. Keeping the aspect ratio locked prevents unwanted stretching.
Format
Best for
Compression
Transparency
JPG
Photos and broad compatibility
Lossy
No
PNG
Graphics, sharp edges, screenshots
Usually lossless
Yes
WebP
Modern web images
Lossy or lossless
Yes
Comparison quick answers
JPG vs PNG
Format
Use it when
JPG
You need smaller photos and broad compatibility.
PNG
You need transparency, sharp edges, or lossless graphics.
PNG vs WebP
Format
Use it when
PNG
You need predictable lossless output.
WebP
You need smaller web images with optional transparency.
Compression vs resizing
Task
What changes
Compression
File size, quality, format, or dimensions.
Resizing
Width and height in pixels.
KB vs MB
Unit
Meaning
KB
Kilobytes, used for smaller upload limits.
MB
Megabytes; 1MB is about 1024KB.
Lossy vs lossless
Compression
Meaning
Lossy
Removes some image information to reduce file size.
Lossless
Keeps the information needed to reconstruct the image.
Definitions
Image compression
Image compression reduces file size by optimizing image data while attempting to preserve visual quality.
Image resizing
Image resizing changes image width and height, usually measured in pixels.
Target file size
A target file size is the maximum or desired image file size, such as 100KB or 1MB.
Lossy compression
Lossy compression permanently removes some image information to reduce file size.
Lossless compression
Lossless compression reduces file size without removing data needed to reconstruct the image.
Common questions
Direct answers
How do I resize an image without distortion?+
Keep the aspect ratio locked when changing width or height. This prevents faces, logos, circles, and product images from being stretched.
Does resizing reduce image quality?+
Downscaling usually keeps good visual quality because it removes excess pixels. Upscaling can look soft because it has to invent pixels that were not present in the original image.
What is the difference between resizing and compression?+
Resizing changes image dimensions, such as 512×512 pixels. Compression changes file size, such as 100KB. A tool can do either task separately or combine both when an image needs exact dimensions and a file-size limit.
Are my images uploaded to a server?+
No. Image decoding, resizing, compression, preview, and download happen locally in your browser. The core tool does not upload your image files to PixelPerfect servers.
Can I compress or resize an image on mobile?+
Yes. You can select images, set dimensions or file-size targets, process the files, preview results, and download output from current mobile browsers.
What is the best image format for websites?+
WebP is a strong default for modern websites because it supports efficient compression and transparency. JPG remains useful for photos when compatibility matters, while PNG is best for sharp graphics or images that need lossless transparency.
What image format gives the smallest file size?+
WebP often gives the smallest file size for web use, especially compared with PNG screenshots or large photos. JPG is still useful for photographic compatibility, while PNG is best when lossless edges or transparency are required.