Local browser processing

Compress images privately

Compress JPG, PNG, WebP and browser-supported images by exporting a lighter WebP copy. Choose quality and maximum dimensions, then download the optimized image. The process runs in your browser.

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Local browser processing

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

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Drop an image here

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

Accepts: Browser-supported imageOutput: WEBP
Waiting for an image

Export settings

These settings are applied before the image is exported locally.

Lower quality usually creates a smaller WebP file. Use the button below after changing this value.
For stronger compression, reduce this value too, for example 1600 or 1200 px.
No server upload is required for this tool. Very large files can still fail if your browser runs out of memory.
Compression is not magic: if the original image is already small or heavily compressed, the final file may not shrink much. Lower the quality or maximum side and click “Recompress”.
Tool guide

Why use this tool?

Large images slow down websites, fill email attachments and can be rejected by upload forms.

This tool focuses on practical size reduction: WebP output, adjustable quality and optional dimension limits.

Compression is local for supported images, so everyday optimization does not require sending the original file to a remote server.

How local processing works

PrivateConverts compresses the image locally by resizing it when needed and exporting a WebP copy from your browser.

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.

Privacy basics

What happens when you upload a file to an online converter?

A clear guide to what can happen during upload-based conversion, why privacy labels matter and when local browser processing is a safer default.

Read guide →Image compression

How to compress images for email without uploading them first

Learn how to reduce image size for email attachments using browser-based compression and practical quality settings.

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

What format does it export?

This tool exports a compressed WebP file, which often gives better file-size reduction than JPG or PNG.

Why did my file not get smaller?

Some images are already heavily compressed. For tiny or already optimized images, WebP can be larger at high quality. Try 60–70% quality or reduce maximum side.

Is it useful for portfolio uploads?

Yes. You can reduce weight and dimensions while keeping a clean visual result.

Does compression remove metadata?

Canvas-based exports generally create a fresh image file without copying the original metadata blocks.