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Compress PNG Online

Lighter screenshots, logos and graphics that stay in PNG format with sharp edges and text.

PNG

or drop files here · JPG, PNG, WebP, HEIC, AVIF and more

Processed on our server. A copy of your file is stored privately for 30 daysBy choosing a file you agree to our Terms of use and Privacy policy.

A PNG compressor for screenshots, logos and graphics

Compress PNG files when screenshots, icons or design exports are too heavy for a slide deck, a help article or a chat. PNG stores every pixel exactly, which keeps text sharp but often wastes space on colors the image barely uses.

FileKiwi rebuilds the image with a smaller palette of 256 colors or fewer. On interface screenshots and flat graphics you will struggle to see a difference, and the file is usually much smaller. Your PNG is processed on our server, so an old laptop handles it as well as a new phone.

  • Palette of 256, 192 or 128 colors, set by the quality slider
  • Output stays PNG, transparent areas stay transparent
  • Processed on our server, temporary working files deleted right after
  • Compress a batch and download each PNG or one ZIP

Why use FileKiwi for this

Still a PNG

The output is a PNG, so it works anywhere the original did, from Google Slides to a WordPress page.

Sharp text and edges

There is no blur and no blocky patches. Only the color palette changes, which suits interface screenshots.

Originals kept if smaller

When a PNG was optimized before and cannot shrink further, FileKiwi returns your original file.

Batches of screenshots

Drop twenty screenshots from a tutorial at once and download them together in a ZIP.

How to use Compress PNG

  1. 01

    Add your PNG files

    Drag in one PNG or a batch. Screenshots, logos, charts and exported designs all work.

  2. 02

    Pick the quality

    At 85% and above the palette keeps 256 colors. Lower settings use 192 or 128 colors for a smaller file.

  3. 03

    Download

    See the size before and after, then save each PNG or get the whole set as one ZIP.

Compress PNG by reducing colors: how it works

A full color PNG can hold millions of colors. A typical app screenshot uses only a small share of them: a white background, a few grays, a brand color and the text. Color reduction picks a palette that matches the image closely and maps every pixel to the nearest color in it.

Because PNG is lossless, the saved file has no compression blur. The only change is in the colors, and on diagrams, icons and settings screens that change is usually invisible. Smooth gradients and photos are where you may see light banding.

Images with large areas of one color shrink the most. A slide exported from PowerPoint or a flat illustration often loses a big part of its weight. A detailed digital painting has more shades to keep, so it shrinks less.

Should your PNG really be a PNG?

Many heavy PNG files are actually photos. Some apps save pictures that way, and that is the most wasteful case. Use this check:

Image typeBest format
App or website screenshotPNG, compressed
Logo or icon with a see through backgroundPNG, compressed
Camera photo or scanned pictureJPG or WebP
Graphic for a modern websiteWebP

This page always saves PNG. If your file is a photo, convert it with PNG to JPG or PNG to WebP instead. JPG cannot store transparency, so see through areas turn white.

Working with a mix of photos and graphics? Compress Image handles JPG, PNG and WebP together and lets you change the output format. Keep the uncompressed original if you plan to edit the design later.

Compress PNG: frequently asked questions

How do I compress PNG files without losing quality?

Keep the setting at 85% or higher, which keeps a palette of 256 colors. On screenshots, logos and diagrams that is very hard to tell from the original. Check images with smooth gradients before you replace the original, since they may show light banding.

Does a compressed PNG keep its transparent background?

Yes. The output is still a PNG, and see through areas stay see through, so a logo can still sit on any background. Transparency is only lost if you later convert the file to JPG, a format that cannot store it.

Is my PNG uploaded or stored?

Yes, a copy of each PNG you add is uploaded over HTTPS and kept in a private folder on our server for 30 days, then deleted automatically. The compression runs on our server; temporary working files are deleted right after, and the result is not stored.

Why did my PNG barely get smaller?

Some PNG files already use few colors or were optimized by another app, so there is little left to remove. Large PNG photos are the other case: they hold too much color detail. Saving those as JPG or WebP gives a much bigger drop.

Can I compress many PNG screenshots at once?

Yes. Drop the whole batch onto the page and every file is compressed with the same setting. When it finishes, download each PNG on its own or all of them together in one ZIP archive.

Related tools

Remove BackgroundAI

Cut out the subject and get a transparent PNG.

White BackgroundAI

Replace any photo background with clean white.

Resize Image

Change image dimensions in pixels or percent.

Compress Image

Reduce JPG, PNG and WebP file size with a quality slider.

Compress JPG

Reduce JPG file size and keep photos looking good.

Flip Image

Mirror a photo horizontally or flip it upside down.

Helpful guides

Guides

How to Make Background Transparent: PNG, Logos, Photos

A transparent background needs the right tool and the right file format. How to cut out logos and photos on every device, and why your PNG still shows a white box.

6 min read

Reviewed by Anna Lewiński, FileKiwi editor. Last updated October 5, 2026.