Compress JPG Images Online for Free
Shrink JPG and JPEG files directly in your browser. ImageNow keeps the original dimensions and format, accepts up to 100 images of 100 MB each, and never sends them to a server.
or drop images here
JPG/JPEG files · Up to 100 images · 100 MB each
Images are compressed locally and never uploaded.
Every image keeps its original format.
Why use this free JPG/JPEG image compressor?
Free with no sign-up
Compress JPG/JPEG images and download the results without creating an account, installing desktop software, or paying for a download.
Batch compression for up to 100 images
Add as many as 100 JPG/JPEG files, compress every pending image with one click, then download one result or all completed files in a ZIP archive.
Private browser processing
Image decoding, compression, previews, and ZIP creation all run in your current browser session — no selected file is uploaded to ImageNow.
How it works
- Select or drop up to 100 JPG/JPEG images into the compressor.
- Click Compress images. Each JPG is re-encoded in turn, with the saving shown beside it.
- Review the actual file-size savings, then download individual results or save all completed files in one ZIP archive.
How JPEG compression makes files smaller
JPEG is a lossy format designed to store photos efficiently. ImageNow re-encodes each JPG or JPEG with an automatic setting that balances file size and visual quality. The result remains a JPEG with the same pixel dimensions.
Image quality and repeated compression
Lossy compression permanently discards some image data. Compressing the same photo again and again can gradually introduce blockiness, halos, or blur. Keep the original if you plan to edit the image later, and use a compressed copy for websites, email, uploads, or sharing.
JPG and JPEG are the same format
JPG and JPEG are two extensions for the same image format. ImageNow keeps the source extension and pixel dimensions, but re-encoding removes EXIF and other embedded metadata. This can save space and prevent camera details from being carried into the downloaded copy.
Why an optimized JPEG may not get any smaller
A photo that was already saved with efficient JPEG settings may have little room left for further reduction. If the new version is not smaller, ImageNow returns the original file and shows 0% savings rather than giving you a larger file.
Frequently asked questions
How do I compress a JPG image online?
Choose or drop your JPG and JPEG files, select Compress images, and compare the original and compressed sizes. You can then download each image separately or download all completed files in a ZIP.
Are JPG and JPEG the same format?
Yes. JPG and JPEG are the same image format. The shorter .jpg extension came from older systems that limited extensions to three characters; modern software normally treats .jpg and .jpeg identically.
Does compressing a JPEG reduce its quality?
Yes, to some extent. JPEG uses lossy compression, so the downloaded file is not an exact copy of the source data. ImageNow chooses the quality automatically to reduce file size while keeping visible damage in check.
Will compression change the image dimensions or format?
No. The pixel width, height, and JPEG format remain unchanged. Re-encoding can remove EXIF and other metadata, and the downloaded filename receives a -compressed suffix.
Can I compress multiple JPG/JPEG images at once?
Yes. Add up to 100 JPG/JPEG files, click Compress images once, and download results individually or together in a ZIP archive. Each file can be up to 100 MB.
Are my JPG/JPEG images uploaded to a server?
No. The selected JPG/JPEG files are decoded and compressed in your browser. Completed files and the optional ZIP archive are also created on your device.
Can I compress JPG/JPEG images on Windows, Mac, iPhone, and Android?
The compressor works in modern browsers on Windows, macOS, Linux, iPhone, iPad, and Android. Very large or complex files use more memory and may work better on a desktop device.