Convert Image to WebP in Bulk

Convert dozens of JPG, PNG, or JPEG images to WebP instantly — free, no uploads, no account needed.

Upload Images to Convert JPG, JPEG, PNG images to WEBP format online.

Please select a image to get started (0/12)

Or drag & drop images in this page

JPGJPEGPNGWEBP

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100% Free & no login required. Your images never leave your device.

How It Works

Process your images in two simple steps

Upload Multiple Images

Select up to 12 JPG, PNG, or JPEG files at once. No account or sign-up required — just drop your batch and go.

Download All WebPs

Your files are instantly converted to WebP in your browser and ready to download. No upload, no wait — everything runs locally on your device.

Why Choose Imresizer?

Fast, secure, and completely free image resizing

Bulk Convert to WebP
Upload up to 12 images at once and convert them all to WebP in a single step — no need to process files one by one.
100% Free, Always
No account, no watermarks, no hidden limits. Bulk convert as many images as you need to WebP, completely free.
Private — Nothing Uploaded
Every conversion runs entirely in your browser. Your images never touch a server — safe for private photos and sensitive content.
JPG to WebP in Bulk
Batch convert JPG photos to WebP for 25–35% smaller file sizes at equivalent quality — ideal for web performance.
PNG to WebP in Bulk
Bulk convert PNG images to WebP for significantly smaller files without visible quality loss.
Lightning Fast
No upload queue, no server wait. Client-side processing converts your entire batch instantly.
Works on Any Device
Bulk convert images to WebP on your phone, tablet, or desktop — no app install needed.

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Testimonials

What Our Users Say

Trusted by thousands of users worldwide since 2015

“

Bulk converted all my blog images to WebP in one go — page load times dropped noticeably and nothing was uploaded anywhere.

“

Free and truly private. Converted a whole batch of product photos to WebP without an account or any server upload.

“

I always converted images one by one. This bulk WebP converter changed that — fast, free, and runs entirely in my browser.

“

Private, instant, and no login. Exactly what I needed for bulk converting PNG icons to WebP for my website.

Frequently Asked Questions

Everything you need to know about image resizing

Can I convert images to WebP in bulk?

Yes. Upload up to 12 JPG, PNG, or JPEG files at once and convert them all to WebP in a single step — no need to process files one by one.

Is this bulk WebP converter really free?

Completely free. No account, no subscription, no watermarks, and no file limits per session. You can bulk convert as many batches as you need at no cost.

Are my images private when converting in bulk?

Yes, 100% private. All conversion happens entirely in your browser — your images never leave your device or reach any server. Safe for sensitive photos and private content.

Which formats can I bulk convert to WebP?

You can batch convert JPG, PNG, and JPEG images to WebP. All formats are fully supported and processed client-side in your browser.

Why convert images to WebP in bulk?

WebP produces smaller file sizes than JPG and PNG at comparable quality — typically 25–35% smaller than JPG and up to 80% smaller than PNG. Bulk converting to WebP speeds up your website, lowers bandwidth, and improves Core Web Vitals scores.

Does WebP support transparency?

Yes. WebP supports alpha-channel transparency, similar to PNG. Transparent backgrounds are preserved when you bulk convert PNG images to WebP.

Is WebP supported by all browsers?

Yes. All modern browsers — Chrome, Firefox, Safari (v14+), Edge, and Opera — support WebP. If you need to support very old browsers, JPG or PNG may be safer choices.