Bring your images.
Choose a file, a batch, or a folder. Your original files remain untouched.
THE PIKOZIP IMAGE TOOLKIT
Compress JPG and JPEG photos online.
Reduce JPG and JPEG file size free. Use smart compression or manual quality, keep JPEG output, preview details and download up to 30 photos in a ZIP.
On-device processing
Drop your images here
Your image format stays the same. Drag and drop, or choose images below.
Up to 30 images · 10 MB per image
JPEG
JPEG images, processed locally
Output settingsJPEG · Same as original · Smart compression · Original dimensionsCustomize
JPEG compressor
A practical JPEG workflow
Bring your JPEG files and prepare them for photographs and broadly compatible image uploads. Your files stay on your device throughout processing.
Smart compression compares JPEG quality settings with detail checks while keeping JPEG output. Manual starts at 85% and lets you choose the setting yourself. Review textures and fine detail in the comparison preview.
JPEG does not preserve transparency. PikoZip fills transparent areas with white when converting to JPEG.
Keep a separate original. Repeatedly saving a compressed JPEG can accumulate artifacts.
A SIMPLE WORKFLOW
Get started with JPEG compressor.
Find your balance.
Set format, quality, width, and an optional target size. Compare your result.
Take the lighter route.
Download one image or the whole batch in a ZIP, with folder paths preserved.
THE DETAILS THAT MATTER
Know your result.
Are my images uploaded?
No image bytes are uploaded. Your browser fetches the image codecs, then processes your selected files locally.
Will the output always be smaller?
Savings vary. A same-format, same-dimension original is retained when it is smaller. Explicit conversions may increase file size, which the result clearly shows.
Can I keep working from the original?
Yes. PikoZip does not overwrite the source file on your device. Keep your original master and download the output as a separate file.
YOUR NEXT STEP
Keep the workflow moving.
Image format guide
Compare PNG, JPG, WebP and AVIF for photos, transparent graphics and website images. Choose a format using your actual output and compatibility needs.
Explore
Image compression explained
Understand lossy and lossless image compression, resizing and target file sizes. Learn why 100 KB is a goal and when keeping the original is the best result.
ExploreYOUR WORKFLOWHelp center
Search common image optimization questions and troubleshoot your PikoZip results.
ExploreMAKE A LITTLE ROOM
Start optimizingYour next image, a little lighter.
Choose your format. Find your balance. Take it with you.