Compress WebP Online Free

Reduce WebP file size while preserving transparency. Upload up to 10 PNG files at once, set quality and target size, preview before and after, then download — all inside your browser. Files never leave your device.

100% Free

No Sign-up

No Watermark

Up to 8 Files

Download as ZIP

Browser-Based · Private

Message

Drop your WebP files here

or choose a source below

Supports WebP PNG JPG · Up to 10 files

Files

0 / 10

No file selected

Click a file in the panel to preview

Original —

Compressed —

Saved —

Compression Quality

Quality Level 75%

Smaller fileBetter quality

Max Output Size (per file)

Limit No Limit

No limit10 MB

Custom: KB

Type any KB value — quality auto-adjusts

Quick Target

Output Format

Max Width (optional)

Leave blank to keep original size

How to Compress a WebP Image

Upload Your WebP Files

Drop up to 10 WebP files at once, or use "Choose Files" to pick from your device, Dropbox, Google Drive, OneDrive, or by URL. Transparent PNGs are fully supported — alpha channels are preserved throughout.

Set Quality & Output Format

Choose PNG to keep full transparency, or switch to WebP for 25–35% smaller files that still support alpha. Use the quality slider or a quick target size to control compression. Click any file in the list to preview the result.

Download Your Compressed WebP Files

Download all files as a ZIP or save individually. Every file shows original size, compressed size and reduction percentage so you know exactly what you are saving.

What You Get

Transparency Preserved

Alpha channels are kept intact — logos and icons download clean

Batch Compression

Up to 10 PNG files compressed at the same time

Target Size Control

Auto-hit 100 KB, 200 KB, 500 KB, 1 MB and more

100% Private

Your images never leave your device

ZIP Download

Download all compressed PNGs in one ZIP

Mobile Friendly

Works on iPhone, Android, iPad and all browsers

Why Compress Your WebP Files?

WebP is the modern web image format — typically 25–35% smaller than JPEG and up to 80% smaller than PNG at the same visual quality. But even WebP files exported from design tools, cameras or other software can be larger than necessary. Re-compressing them at a slightly lower quality level is the fastest way to cut file sizes without switching formats.

The key advantage of WebP is that it supports both lossy and lossless compression, as well as full alpha channel transparency. This tool preserves transparency completely — logos, cutouts and soft-edged images all come out exactly as they went in, with no white fill added.

If you need maximum compatibility with older browsers or print workflows, you can convert your WebP to PNG for lossless quality with transparency intact, or to JPG for the smallest file size when transparency is not needed.

Everything runs in your browser — your images never leave your device. No account, no sign-up, no watermark on the output.

Frequently Asked Questions

Common questions about compressing WebP images

Does compressing WebP keep transparency?

Yes. When you compress to WebP or PNG, the alpha channel is fully preserved. Converting to JPG will fill transparency with white because JPG does not support alpha.

Should I re-compress as WebP or convert to PNG?

Re-compress as WebP when you want the smallest file — WebP gives the best balance of quality and size. Convert to PNG when you need lossless quality or full compatibility with older tools. Use JPG when transparency is not needed and smallest file size is the priority.

Is this WebP compressor really free?

Yes, completely free. No account, no sign-up, no watermark on the output and no limit on how many times you use it.

Does my WebP get uploaded to a server?

No. All compression happens directly in your browser. Your files never leave your device.

How do I compress a WebP to under 100 KB?

Click the "100 KB" Quick Target button and the tool automatically adjusts quality to get as close to 100 KB as possible. You can also type any custom KB value in the Custom box.

Can I compress multiple WebP files at once?

Yes. Upload up to 10 WebP files at once. All are compressed with the same settings. Download them individually or all at once as a ZIP.

Can I use this on my phone?

Yes. The tool works on iPhone, Android, iPad and any modern browser with no installation needed.