100% Private
100% Private – Images never leave your device

PNG Optimizer

PNG is the right format for logos, icons, and graphics with transparency, but PNG files are often far larger than they need to be. This page re-encodes PNGs in your browser, resizes them if you ask, and strips metadata in the process because redrawing on Canvas does not carry EXIF or GPS data forward.

Drag and drop images here, or click to choose files

Up to 20 images per batch. For dozens of images, run another batch of 20.

Output is PNG only. Quality slider does not apply to PNG.

Output is PNG only. For photos, use WebP conversion instead — it will usually be much smaller.

How to use this tool

  1. Drop up to 20 PNG images.
  2. Set a max width if the PNGs are larger than they will ever be shown.
  3. Press Optimize PNGs and check the before and after sizes. If a PNG is a photo, converting it to WebP on the WebP Converter page will usually be smaller still.

Why this page is separate

Each tool on this site has its own page, its own title, and its own explanation, so search engines can match a specific search — for example, this exact job — to this exact page, instead of to one generic homepage. That is also why the steps and questions above are written for this tool only, not copied from the other tools.

Is this true lossless OxiPNG optimization?

No, and this page does not claim it. It is Canvas re-encoding plus resizing and metadata stripping. True OxiPNG needs a WASM codec, which is a future upgrade.

Does it keep transparency?

Yes. Output is PNG, so transparent areas stay transparent.

Why is my PNG still large?

PNG is lossless, so a detailed photo saved as PNG will always be large. For photos, WebP or JPEG is the right format, not PNG.

Back to all tools

All tools on this site run in your browser. No upload, no signup, no external code libraries in v1.