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Drop PNG images here or click to browse
.png → .webp · Multiple files supported · Nothing uploaded
Works best under 20MB per file - very large images may be slow on mobile
No files yet - drop some PNGs above
Converting…
✓ All images converted
Transparency preserved Live savings preview Hit an exact target size No uploads, ever
Why this converter

Built around the two questions everyone actually has

Transparency, automatically kept

WebP supports the same alpha channel PNG does, so the conversion carries it over without any extra steps or matte color to pick.

"How much smaller will it be?"

Move the quality slider and a live badge shows the estimated savings immediately, calculated from a real test encode, not a guess.

"Can I hit a size budget?"

Switch on target size, type a KB limit, and the tool automatically searches for the highest quality that still fits, per image, in one pass.

Private by default

Conversion runs on your browser's own Canvas engine. Images are never sent to a server, so there's nothing to leak and no upload wait.

Batch friendly

Drop in dozens of PNGs, apply the same setting to all of them, and download every result together in a single ZIP.

Check before you download

Drag the before/after slider on any converted file - shown on a checkerboard backdrop - to confirm transparency survived and judge the compression trade-off.

Process

Three steps, nothing complicated

01

Add your PNG images

Drag and drop .png files, or click to browse from your device.

02

Dial in quality or a size target

Watch the live savings estimate as you move the slider, or flip on target size and set a KB budget instead.

03

Convert & download

Grab each WebP individually, or all at once as a ZIP - no sign-up required.

ℹ About PNG → WebP

PNG only ever compresses losslessly, which is why it's the go-to for logos, screenshots, and anything needing transparency - but that makes it inefficient for photographic detail. WebP supports the same alpha transparency while adding a lossy mode that can shrink photo-like PNGs by 60–80% or more.

Tip: watch the live savings badge as you move the quality slider, or switch to target size if you need every output file to fit a specific KB budget.

Free Online PNG to WebP Converter

imgxcolor's PNG to WebP converter shrinks your images directly in your browser - no software, no file uploads, no cost - while keeping transparency intact. Drop in one PNG or a whole batch, dial in a quality level or a KB budget, and download the results in seconds.

It's built for designers exporting icons and logos, developers preparing web assets, and anyone who wants a smaller file without losing the alpha channel.

PNG vs. WebP: What Actually Changes

PNG only compresses losslessly, which is inefficient for photographic detail - a photo saved as PNG is often several times larger than the same photo saved as WebP, purely because PNG can't discard any information to save space.

WebP, developed by Google, supports both modes. Its lossless mode is typically around 26% smaller than PNG at equivalent quality with zero visual difference; its lossy mode, the default here, trades a small and often invisible amount of detail for dramatically smaller files, especially on photo-like PNGs.

Does Transparency Survive the Conversion?

Yes. WebP supports the same alpha channel PNG is known for, so switching formats doesn't mean giving up a transparent background. Thumbnails and the before/after compare view are shown on a checkerboard backdrop so you can confirm it visually rather than just trusting a claim.

Two Ways to Dial It In

Move the quality slider and watch the live savings badge update from a real test encode - not a guess. Or flip on target size, type a KB limit, and the tool automatically searches for the highest quality that still fits that budget, per image, in one pass. Higher quality (90%+) keeps logos, UI shots, and text crisp; photos can usually drop lower with little visible difference.

Privacy - 100% Client-Side

Every conversion runs locally with JavaScript and the Canvas API. Your images are never uploaded, stored, or transmitted, which makes this converter safe for client assets, personal photos, or any file you'd rather not send to a third-party server. There are no accounts, no sign-ups, and no usage limits.

Frequently Asked Questions

Does converting PNG to WebP happen on a server?

No. imgxcolor decodes and re-encodes every PNG locally using your browser's Canvas engine, so nothing is ever uploaded - that's also why the live savings estimate can update instantly as you move the quality slider.

Will the converted WebP keep transparency?

Yes. The alpha channel is carried over automatically. Thumbnails and the before/after comparison are shown on a checkerboard background so you can visually confirm transparency survived.

Will lossy WebP make text or sharp edges look blurry?

It can at low quality settings. Higher quality (90%+) keeps logos, UI screenshots, and text crisp; photos can usually drop lower with little visible difference. Use the compare view to judge for yourself.

How does the target file size feature work?

Turn on target size, enter a maximum in KB, and the tool automatically searches for the highest quality setting that still fits under that budget for each image, instead of you guessing a quality percentage by trial and error.

Why is WebP smaller than PNG?

PNG only compresses losslessly, which is inefficient for photographic detail. WebP's lossless mode is typically around 26 percent smaller than PNG at equal quality, and switching photo-like PNGs to lossy WebP commonly shrinks them 60 to 80 percent or more.

Can I convert several PNG files at once?

Yes. Drop in as many PNGs as you like, apply the same quality or target size setting to the whole batch, convert them together, and download every result at once as a ZIP.

Is there a file size or file count limit?

No hard limit beyond what your browser can comfortably handle. The tool is free, has no watermark, and doesn't require an account.