Upload your JPG, PNG, or WebP image and this tool will automatically reduce it to approximately 100KB while preserving the highest practical visual quality. The compressor adjusts quality first and may reduce dimensions when necessary. Processing happens directly in your browser, so the image is not uploaded.
✓ 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 is checked against the 100KB target and shown beside the original. If the target is reachable, the result is at or below the selected file size with the best practical quality found by the encoder.
How it works
From original to optimized in seconds
UploadChoose, drop, or paste one or more JPG, PNG, or WebP images.
Set your targetChoose 100KB or enter a custom KB or MB target.
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
Make an image small enough for a 100KB upload requirement on forms, portals, or applications.
Reduce photos for email attachments, websites, and faster sharing.
Compress JPG, PNG, or WebP files while keeping a previewable result.
Technical details
Image compression reduces the amount of storage required for an image by optimizing or removing data while attempting to preserve visual quality. Target-size compression uses iterative quality adjustment, binary search, optional dimension reduction, and final validation against the selected KB or MB limit.
How our exact-size compression works
Analyze the original image dimensions, file type, and target file size.
Create an output canvas from the original pixels.
Estimate a practical quality range for the selected format.
Use iterative encoding and binary search to find the smallest quality change that can meet the target.
Reduce dimensions only when quality adjustment cannot reach the file-size limit.
Validate the final file size before showing the download.
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
What is an image compressor?+
An image compressor is a tool that reduces image file size so the image is easier to upload, store, email, or publish on a website. Compression can change quality, format, dimensions, or a combination of those settings.
What does compress image to 100KB mean?+
Compress image to 100KB means reducing the downloaded image file so it is at or below about 100KB. The result depends on format, dimensions, quality, and image detail, so the tool aims for the closest practical result under the target.
Can I compress an image exactly to 100KB?+
Yes, the tool can attempt to create an image at or below 100KB. The exact result depends on the original image, format, dimensions, and visual complexity. If quality adjustment alone is not enough, the tool may reduce dimensions while preserving the aspect ratio.
Can I compress JPG to 100KB?+
Yes. You can upload a JPG or JPEG image and compress it toward 100KB. JPG works well for photographs because lossy compression can reduce file size while keeping a usable visual result.
Can I compress PNG to 100KB?+
Yes. You can upload a PNG image and compress it toward 100KB. PNG files with transparency or sharp graphics may not compress as much as photos, so WebP output can sometimes produce a smaller file.
Does image compression reduce quality?+
Yes, lossy image compression can reduce quality because it removes some image information to lower file size. The goal is to remove data that is less visible while keeping the image acceptable for its intended use.
Can I reduce image size without losing quality?+
You can reduce image size with little visible quality loss by removing unnecessary dimensions, choosing the right format, and using moderate compression. Completely lossless reduction is possible for some images, but strict KB targets often require lossy compression.
How can I reduce image size without changing dimensions?+
To reduce image size without changing dimensions, keep the width and height unchanged and lower quality or choose a more efficient format such as WebP. Some images cannot reach a very small KB target without also reducing dimensions.
How do I make an image under 100KB?+
Upload the image, keep 100KB selected as the target, and run the compressor. The tool adjusts quality first, then may reduce dimensions if the original file cannot fit under 100KB at a practical quality level.
Can I compress JPG, PNG, and WebP images?+
Yes. The tool accepts JPG, PNG, and WebP images. JPG is commonly used for photos, PNG for graphics or transparency, and WebP for efficient web images.
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.