Local browser processing

Convert PNG or JPG to WebP privately

Convert PNG and JPG images to WebP in your browser. Adjust quality and maximum size before downloading the optimized file.

🛡️
Local browser processing

This tool runs in your browser for supported images. No upload is required before processing starts.

🛡️

Drop an image here

Drag and drop, or use the button below. Processing happens locally in your browser.

Accepts: PNG or JPG imageOutput: WEBP
Waiting for an image

Export settings

These settings are applied before the image is exported locally.

No server upload is required for this tool. Very large files can still fail if your browser runs out of memory.
Tool guide

Why use this tool?

WebP is often smaller than JPG or PNG, which makes it useful for websites, portfolios, blogs and social previews.

You can reduce dimensions and quality before export to control the final file size.

Because the conversion runs in your browser, common images can be processed without a server upload.

How local processing works

The selected PNG or JPG is opened in your browser and exported as a WebP file using local browser APIs.

The website still loads from PrivateConverts, but the selected file is handled by browser APIs on your device for this supported tool. In Developer Tools, local previews and downloads can appear as blob URLs; those are temporary browser objects, not server uploads.

Before converting private files

If a file contains personal photos, screenshots, client previews, location data or private notes, check whether the converter needs an upload. For this supported PrivateConverts tool, processing is designed to happen locally in your browser.

Related reading

Learn more about safer conversion.

Local processing

How to convert images without uploading them first

Learn how browser-based image conversion works, when it is useful and how to verify that a tool is not uploading your image first.

Read guide →iPhone photos

HEIC to JPG: a privacy guide for iPhone photos

Why iPhone HEIC photos often need conversion, what privacy details to consider and how browser-based HEIC to JPG conversion helps.

Read guide →Format guide

WebP vs PNG vs JPG: which image format should you use?

A practical guide to choosing between WebP, PNG and JPG for websites, email, screenshots, transparent images and everyday sharing.

Read guide →
FAQ

Common questions

Is WebP good for websites?

Yes. WebP often provides smaller files than JPG or PNG while keeping good visual quality.

Can I change quality?

Yes. Use the quality slider before converting, then reprocess the image.

Are metadata copied?

Canvas-based export usually creates a fresh image file without copying original metadata blocks.

Can WebP be larger than the original?

Sometimes, especially with tiny or already optimized files. Lower quality or maximum side if size is your priority.