I Stopped Paying for Image Compression — My Browser Does It Now, Locally, Batch, and Free

Description and use

A Rust/WebAssembly tool runs in the browser to locally convert images to WebP, preserving EXIF, with no server cost or privacy risk.

Problem

Online image compression tools require uploading images to external servers, exposing privacy risks and incurring costs.

Outcome

The tool converts hundreds of images to WebP in seconds on a mid‑range laptop, with no data leaving the machine, zero cost, and offline capability.

Workflow

• Open https://tools.jackgreen.top/image-to-webp-converter-first/ in a browser
• Drag a folder or individual images into the drop zone
• Adjust the quality slider (1–100) and preview side‑by‑side
• Click Convert to generate WebP files
• Download the converted files
• (Optional) Repeat for additional batches

Evidence

It runs in your browser. Not "your browser with a hidden API call" — literally all the computation happens on your machine.

Source

Batch convert hundreds of images at once — drag a whole folder in

Source