CleanorTools
Convert

PNG Compressor

Details

How to use PNG Compressor

What the tool does, how to run it, and what to expect from the result.

How PNG compression works here

PNG is lossless by nature, which is why a screenshot full of flat color is small and a photo saved as PNG is enormous. This tool compresses by quantizing: it reduces the image to an optimized palette of colors, which is the same approach TinyPNG made famous, and it happens locally in your browser.

On screenshots, UI mockups, and graphics the savings are typically 50 to 75 percent with no visible difference, because those images never used millions of colors in the first place. On photographs the palette step is visible sooner; for photos, JPEG or WebP is usually the better container.

  • Upload the PNG
  • The image is quantized to an optimized palette locally
  • Compare and download the smaller file

When to compress a PNG and when to convert it

Compress the PNG when you need to stay PNG: transparency, sharp-edged UI, logos, screenshots headed for docs or bug reports. The quantized file keeps its alpha channel and its crisp edges.

Convert instead when the content is photographic: a photo as PNG is the wrong container, and even a perfectly compressed one loses to a modest JPEG or WebP. The format converters next door handle that path.

Tips

Getting a better result out of PNG Compressor

Specific settings and thresholds, not general advice.

  • Screenshots with gradients or shadows may show banding at aggressive settings; back off one step and the banding usually disappears while most of the savings stay.
  • Transparency survives quantization; you do not lose the alpha channel by compressing.
  • For the web, compress the final size, not the original: resize first, then compress the resized copy.
  • Icons and logos with few colors compress hardest; 80 percent reductions are normal there.
Limits

What PNG Compressor does not do

The honest boundary, so you do not lose time finding it yourself.

  • Quantization is lossy: colors are reduced, even when the eye cannot tell.
  • Photographs will show the palette limit sooner than graphics; consider JPEG or WebP for photos.
  • One file at a time; there is no batch mode on this page.
Reference

Terms used on this page

Short, plain-language definitions for the formats and settings above.

Photos & videoScreenshotA screenshot is an image captured of whatever is on your screen, saved into your photo library like a regular picture. Individually small, screenshots accumulate fast and clutter the camera roll because most are saved once and never needed again.iOSAndroidGeneral
At a glance

Who PNG Compressor is for

A quick way to understand who this helps, what it solves, and where it connects next.

Best fit

Anyone shipping PNGs to a website, an app store listing or an email

Ideal for

Cutting PNG weight without switching format

FAQ

Common questions

Short answers for the questions people usually have before trying a utility like this.

How much smaller will my PNG get?

Screenshots and graphics typically drop 50 to 75 percent. Photographs vary more, and are often better converted to another format entirely.

Will compressing a PNG make it blurry?

No. Quantization reduces colors, not sharpness; edges stay pixel-crisp. The visible failure mode is banding in smooth gradients, not blur.

Does it keep transparency?

Yes. The alpha channel survives, which is usually the reason the file is a PNG at all.

Is my image uploaded anywhere?

No. The quantization runs in your browser and the file stays on your device.

Is this the same thing TinyPNG does?

The same idea, palette quantization, running locally instead of on a server. The tradeoffs are the same too: superb on graphics, more visible on photos.

PNG or WebP for the web?

If you can serve WebP, it is smaller at the same quality and supports transparency. When the pipeline demands PNG, compress it here and the gap narrows a lot.

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Cleanor app

Do it all on your device

Cleanor puts these tools in one app: compress and convert images, video, and audio, work with PDFs, and scan text right on your device. Plus free up storage and clear inbox clutter with Email Cleaner. Start with a free trial.

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