Smaller website images
Optimized images generally contain fewer bytes than their original versions. This makes image compression useful when building pages with many photos, product images or large graphics.
Free online image compressor
Image Compressor Online — Compress Images to Exact Size
Compress JPG, PNG, WebP, GIF, AVIF and other image formats online for free. Reduce image file size to 100KB, 200KB, 500KB or any target size while keeping the best possible image quality.
A fast image compression tool and photo size reducer that works directly in your browser. No account, no watermark and no unnecessary uploads.
100% in-browser
No account required
Free to use
No watermark
Target size control
Images Compressed
11
Live
Drag an image here, or
JPG · JPEG · PNG · WebP · GIF · BMP · TIFF · AVIF · SVG
Compress images online without an account
KB
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Output format
Images are compressed locally in your browser using the Canvas API. Your selected image is not intentionally uploaded by this compression interface.
Free image compression tool
Compress images online and reduce image file size
BulkImageCompressor.co is a free online image compressor designed to make image files smaller without making the process complicated. Instead of relying only on a generic quality slider, you can specify the file size you actually need.
Whether you need to compress an image to 100KB, reduce a JPG for a job application, shrink a PNG for a website, optimize WebP images for page speed, or prepare photos for an upload limit, the tool lets you choose a target size in kilobytes.
The compressor supports popular image formats including JPG, JPEG, PNG, WebP, GIF, BMP, TIFF and AVIF as input. You can then select JPEG, PNG or WebP as your output format depending on your quality and file-size requirements.
100KB
Compress images for strict upload limits
200KB
Reduce photo size while retaining useful quality
500KB
Prepare website and application images
Any KB
Enter your own custom target size
Target file size
Compress an image to the size you need
Different websites and upload forms use different file-size limits. Choose a common target or enter your own number above.
How it works
How to compress an image online
Reduce image size in three simple steps without installing software.
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01
Upload your image
Drag an image into the compressor or browse your device. JPG, PNG, WebP, GIF, BMP, TIFF and AVIF images are supported.
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02
Choose the target size
Enter a target in KB such as 100KB, 200KB or 500KB. You can also enter your own custom file-size target.
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03
Download the compressed image
Compare the original and compressed image, check the resulting file size, then download the optimized image.
Supported formats
Compress JPG, PNG, WebP, GIF, AVIF and more
Choose the right output format for your image and your file-size requirements.
JPG / JPEG
JPG Compressor
Reduce JPG and JPEG image file sizes for websites, forms, applications, email attachments and online uploads.
PNG
PNG Compressor
Compress PNG images while keeping the format when lossless output or transparent graphics are important.
WebP
WebP Compressor
Optimize WebP images for modern websites and reduce image weight while maintaining a useful visual result.
GIF
GIF Compressor
Reduce the file size of supported GIF images for easier sharing and online use.
AVIF
AVIF Compressor
Work with modern AVIF images and convert supported images into browser-friendly output formats.
BMP / TIFF
BMP & TIFF Images
Load supported BMP and TIFF images and create a smaller JPEG, PNG or WebP output.
Why use BulkImageCompressor.co
A simple image optimizer for everyday file-size problems
Built for people who need smaller image files without complicated editing software.
Reduce image file size
Make large photos and graphics smaller for websites, applications, forms, email and online platforms.
Target a specific KB size
Instead of guessing with a quality percentage, enter the file size you actually need.
Improve website performance
Smaller image files can help reduce page weight and make image-heavy pages easier to load.
No software installation
Use the image compression tool directly from a modern web browser on desktop or mobile.
No watermark
The compressed output does not need a branding watermark added to your image.
Before and after preview
Compare the original and compressed versions before deciding whether to download the result.
Popular use cases
When you need to reduce image size
Compress photos and graphics for common upload, publishing and performance requirements.
Job applications
Reduce passport photos, profile pictures and other images when an application portal requires a small maximum file size.
Government forms
Prepare photographs and scanned images for online forms with strict image-size restrictions.
Website uploads
Optimize images before adding them to websites, blogs, landing pages and content management systems.
Email attachments
Make photos smaller when attachments are too large to send or share conveniently.
Online marketplaces
Reduce product photographs for listings where platforms enforce file-size or upload requirements.
Social media images
Create smaller image files that are easier to upload and share across online platforms.
Page speed
Reduce image payloads when working toward website performance and page-weight goals.
Documents and PDFs
Shrink image assets before placing them into documents or other files where image size matters.
Forms with KB limits
Target a specific file size instead of repeatedly guessing and re-uploading the same image.
Features
Powerful image compression features
Everything you need to reduce image file size and prepare images for online use.
Exact-size targeting
Enter any KB value and the compressor searches for a result close to your selected target.
Format-aware compression
JPEG, PNG and WebP behave differently, so you can select the format that fits your needs.
Multi-pass resizing
Large images can be progressively reduced to help maintain a better visual result.
Before and after comparison
Use the comparison slider to inspect the original and compressed versions before downloading.
Browser-based processing
The compression workflow runs in the browser rather than requiring a traditional image-upload workflow.
Compression accuracy
The result reports its size and how closely it matches the selected target.
Image optimization
Why reducing image file size matters
Large images can make websites, applications and online uploads unnecessarily heavy. Compressing images can help you work within file-size limits and reduce the amount of image data that needs to be transferred.
Easier uploads
Many websites and applications place maximum file-size limits on images. A target-size compressor can help you prepare an image before submitting it.
Better file management
Smaller image files can also make collections of photos and graphics easier to store, transfer and share.
Comparison
More than a basic quality slider
Instead of making you guess a quality percentage, ImageCompress lets you start with the file size you need.
ImageCompress
Basic compressor
Target a specific KB size
Browser-based processing
Custom target size
JPEG / PNG / WebP output
Before & after comparison
No account required
Use cases
Reduce image size for almost any upload
Prepare smaller images for applications, websites, forms, email and online platforms.
Job applications
Reduce profile photos and application images when portals enforce strict KB limits.
Forums & marketplaces
Make avatars, listing photos and attachments smaller before uploading.
CMS & media libraries
Optimize images before adding them to content management systems.
Email attachments
Reduce large photos before attaching them to messages.
Page speed budgets
Reduce image bytes when working toward a specific page-weight target.
Online forms
Create an image that fits the file-size requirement of an upload form.
FAQ
Image Compressor FAQs
Answers to common questions about compressing and reducing image file size.
Upload an image, select a target file size in KB, choose JPEG, PNG or WebP and click Compress image. The tool then searches for a result close to your selected size.
Yes. Enter 100 KB as the target size. The compressor will attempt to create the closest achievable result based on the source image and selected output format.
Yes. You can enter 200 KB, 500 KB or another custom target size. The target size field accepts your own value.
The compression workflow is designed to run directly in your browser using the Canvas API rather than sending the selected image to a server.
PNG is a lossless format and does not have the same quality control as JPEG. When a very small target is required, JPEG or WebP can often produce a significantly smaller result.
The compressor returns the closest result it can produce and reports the resulting file size and target accuracy rather than claiming that an unreachable target was achieved.
Supported input formats include JPG, JPEG, PNG, WebP, GIF, BMP, TIFF, AVIF and SVG. Output options are JPEG, PNG and WebP.
Yes. The image compressor is free to use and does not require an account or add a watermark to the output.
Upload your JPG, choose JPEG output and enter your desired target size. The compressor adjusts image quality and dimensions to reduce the file size.
Upload the PNG and choose PNG output when you need to retain PNG. If you need a much smaller file, converting to JPEG or WebP can often provide greater size reduction.
Image compression can involve a trade-off between file size and visual quality. The tool provides a before-and-after comparison so you can inspect the result before downloading it.
Yes. The interface is designed to work in modern desktop and mobile browsers. Processing performance can vary depending on the device and image dimensions.
Start compressing
Need to reduce an image file size?
Upload your image, choose your target size and create a smaller image in seconds. Compress JPG, PNG and WebP images online for free.
Compress an image now