---
title: "PNG to WebP Converter — Keep Alpha, No Upload | Compress Pro"
description: "Convert PNG to WebP in your browser and keep full transparency. Graphics shrink dramatically, batches download as a ZIP, and nothing is uploaded. Free."
canonical: https://compress-pro.com/png-to-webp
---

# Convert PNG to WebP.

> PNG to WebP with transparency kept — converted locally.

Convert PNG images to WebP entirely in your browser — **processed on your device, never uploaded**. Unlike JPG, WebP keeps transparency fully intact, so logos, UI graphics, and stickers stay see-through while shrinking dramatically. Pick a quality or a target size, convert in batches, and download a ZIP.

**No uploads · No ads · Free & open source.**

## How it works

1. Drop files anywhere on the page, click to browse, or paste with Ctrl/⌘ + V.
2. Pick a quality or preset — or set an exact target size and let the tool find it.
3. Compress, compare before/after, and download — individually or as a ZIP.

## Transparency without PNG’s weight

PNG pays for lossless perfection in bytes; WebP keeps the see-through parts — logos, UI cutouts, stickers — while compressing the rest like a modern format. Graphics routinely land 60–80% smaller with edges just as clean, which is why WebP replaced PNG as the default graphics format of the web.

## Pick the quality by content

Screenshots and UI graphics look identical at quality 80–90; photographic PNGs tolerate less. Quality 100 keeps pixels exact when nothing may shift. And the trip is reversible — [WebP to PNG](https://compress-pro.com/webp-to-png) decodes back to lossless PNG whenever an old tool insists on it.

## Frequently asked questions

### Why convert PNG to WebP?

Same image, much smaller file — graphics and screenshots often shrink 60–80%. WebP keeps transparency, so it replaces PNG on the web without visual compromise.

### Is transparency preserved?

Yes — WebP fully supports transparency, so nothing is flattened. This is the key difference from converting to JPG.

### Lossy or lossless — what am I getting?

The quality slider drives lossy compression, which is what makes files so small; at 90+ it is visually indistinguishable for most graphics. Judge with the built-in before/after compare.

### Do my files leave my device?

No — the pixels never leave your machine. Decoding and re-encoding both happen in your browser; there is no upload to wait for and no server-side copy to worry about afterwards. Want proof? Run one file through, switch your connection off, and run another — it still works.

## Related tools

- [Compress PNG images](https://compress-pro.com/compress-png)
- [Convert JPG to WebP](https://compress-pro.com/jpg-to-webp)
- [Convert WebP to PNG](https://compress-pro.com/webp-to-png)

---

Part of [Compress Pro](https://compress-pro.com/) — every tool page has a markdown twin at `<page url>.md`. Full tool index: [llms.txt](https://compress-pro.com/llms.txt)