THE PIKOZIP IMAGE TOOLKIT

Convert JPG to PNG online.

Convert JPG and JPEG images to PNG free in your browser. Choose a PNG mode, compare file sizes and download one image or up to 30 PNG files in a ZIP.

On-device processing

Choose a fresh format

Choose an output format, then add your images.

Up to 30 images · 10 MB per image

JPEG

JPEG images, processed locally

Output settingsPNG · Balanced PNG · Original dimensions

Customize

Fine-tune your files

Set your balance of format, file size, and detail.

Start with a useful profile

Choose a starting point, then adjust the details below.

Settings saved on this device

Save current settings

Saved profiles 0/10

Profiles affect new images. Use “Apply to all images” below to update your current batch. Saved profiles contain settings only; your images are never saved here.

Optimization approach

Output format

Smart compares encoded sizes and keeps transparency. JPEG fills transparent areas with white.

Lossy image qualityBalanced PNG

Smaller fileMore detail

PNG uses the compression mode below; this quality slider does not affect it.

Maximum width

Keeps proportions. Never enlarges.

PNG compression

Subtle color changes are possible. Transparency is preserved. Review the preview.

Target file size OPTIONAL

PNG size depends on its pixels and compression mode.

Settings apply to new images. Apply them to update the current batch.

JPEG to PNG

Know what changes

Turn a JPG photo or graphic into a PNG file for editing tools and uploads that ask for PNG.

PNG output uses lossless or palette modes, so a converted photo is often larger than the JPG. Converting cannot restore detail that JPEG compression already removed. Use it when compatibility or further editing matters more than file size.

A detailed photograph can remain large as a PNG. Consider WebP or AVIF when your destination accepts them.

Inspect soft shadows, gradients, and small lettering if you choose palette mode.

A SIMPLE WORKFLOW

Get started with JPEG to PNG.

Bring your images.

Choose a file, a batch, or a folder. Your original files remain untouched.

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.

LEARN SOMETHING USEFUL

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

LEARN SOMETHING USEFUL

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.

Explore YOUR WORKFLOW

Help center

Search common image optimization questions and troubleshoot your PikoZip results.

Explore

MAKE A LITTLE ROOM

Your next image, a little lighter.

Choose your format. Find your balance. Take it with you.

Start optimizing

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