Image Compress

ImageProcessed Locally — 100% Private

Reduce image file size with multi-threaded Web Workers.

Image CompressReduce image file size using multi-threaded Web Workers — no quality loss

Click or drag & drop image to compress

Supports PNG, JPEG, WebP

How to Use Image Compress Online

Compress JPEG, PNG, and WebP images locally with multi-threaded Web Workers. Dramatically reduce file sizes while maintaining pristine visual fidelity for faster websites and smaller downloads.

Step 01

Input & Prepare

Drop or upload one or more images into the compression engine.

Step 02

Configure & Adjust

Adjust the target quality slider or specify maximum file size.

Step 03

Export or Copy

Download compressed images individually or as a single ZIP package.

Common Use Cases

Accelerate website page speed (LCP) and boost Google SEO scores
Shrink image attachments for Outlook, Gmail, and Discord upload limits
Optimize product photography for Shopify, WooCommerce, and Etsy stores
Free up storage on mobile devices and cloud backups

Technical Specifications & Limitations

Lossy compression slightly alters pixel values to achieve 70-90% file size reductions.

Frequently Asked Questions

Are my photos uploaded to any external server?

No, all compression runs in client-side Web Workers in your browser. Complete privacy is guaranteed.

How much file size reduction can I expect?

Most JPEG and WebP photos can be reduced by 50% to 85% with virtually zero perceptible loss in visual quality.

Does it support batch image compression?

Yes, you can upload multiple images simultaneously and compress them all in one click.

100% Client-Side Privacy Guarantee

DailyToolbox processes all operations using local WebAssembly and Web APIs inside your browser memory. No data, files, or sensitive inputs are ever uploaded to an external server or saved in tracking cookies.