Bring your images.
Choose a file, a batch, or a folder. Your original files remain untouched.
THE PIKOZIP IMAGE TOOLKIT
Find a smaller image format for your file.
Compare supported image formats using your own file. Review actual output sizes and image detail before choosing PNG, JPG, WebP or AVIF for download.
On-device processing
Choose a fresh format
Choose an output format, then add your images.
Up to 30 images · 10 MB per image
PNGJPEGWebPAVIF
Output settingsFormat-size comparison · 85% quality · Original dimensionsCustomize
Smart format finder
A file-size comparison, with control
No need to guess the output format first. Smart mode tries supported formats at your chosen settings, then keeps the smallest file. It skips JPEG when transparency needs to be retained.
Smart compares bytes, not a perceptual quality score. Different encoders interpret quality settings differently. Always inspect the selected result before using it for important artwork.
Trying several encoders takes longer and uses more of your device’s CPU. For a large batch, a fixed WebP or JPEG output may be a better fit.
If the original is smaller and dimensions have not changed, Smart can keep the original.
A SIMPLE WORKFLOW
Get started with Smart format finder.
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.