How to Compress JPG Online
Upload
Upload JPG or JPEG files (up to 5 per batch, 10 MB each).
Adjust
Set JPEG quality or choose a maximum output size in kilobytes.
Download
Download compressed JPG files.
Free image optimization
Compress JPG Online
Upload JPG or JPEG files and compress them with adjustable quality levels or a target max file size in KB.
JPEG quality sliderMax file size targetOptional metadata strip
Drag & drop images hereSelect images
or click to browse.
JPG, PNG, WebP, HEIC, AVIF, TIFF, GIF, or SVG — always converts to JPG. Up to 10MB per image. Max 5 images.
JPG, PNG, WebP, HEIC, AVIF, TIFF, GIF, or SVG — always converts to JPG. Up to 10MB per image. Max 5 images.
This page is optimized for JPEG workflows: photo exports, email attachments, and CMS uploads where JPG is the required format.
When to compress JPG
- Reduce DSLR export size for web galleries
- Hit email attachment limits without resizing pixels
- Batch-compress product photos for ecommerce
JPEG quality tips
Quality 75 is a strong default for web photos. Drop toward 60 for thumbnails. Above 90, file size savings are usually small. Re-saving the same JPG multiple times adds generation loss — keep an original master copy.
Your images stay on your device
Your browser opens, processes, and prepares your images for download.
How local processing works
- Image files are read from your device.
- Conversion happens in your browser.
- Converted files are available to download from the current tab.
- No account is required.
- You choose where to save the results.
- Your original files stay as they are.
Saving your files
Download the converted images before closing the tab. ConvertPort does not keep a copy for you to retrieve later.
Image privacy FAQ
Does ConvertPort upload my photos?
No. Image processing takes place on your device.
Does converting replace the original?
No. The download is a separate file.
Can I share a download link for the result?
Save the file to your device first, then share the file through the app of your choice.
Frequently asked questions
Is Compress JPG Online free on ConvertPort?
Yes. Compress JPG is completely free.
Are my images stored on your servers?
No. Your browser processes the images on your device and prepares the results for download.
Can I process multiple images at once?
Yes. Batch-compress up to 5 JPG files in one session.