Compress & Convert Images (JPG, PNG, WebP)
Reduce image file size and convert between WebP, JPG, and PNG with live preview and zero server uploads.
📁 Click here or drag & drop an image (JPG, PNG, WebP)
100% local in-browser processing
Live preview of compressed output:
What does the Image Compressor do and how to use it?
The Herramix Image Compressor & Converter helps you shrink large photos and graphics for faster website performance, email attachments, or online forms with strict file size limits. Powered by the native HTML5 Canvas API in your browser, it re-encodes images into WebP, JPG, or PNG in milliseconds.
Drop an image into the box above (or click to browse your device), pick your desired output format, and adjust the quality slider. You will immediately see the new file size in KB, the percentage saved, and a visual preview before downloading.
Usage example
Scenario: You have a 1.8 MB PNG or high-bitrate JPG photo that you want to publish on a web page.
Result: Converting it to WebP at 80% quality reduces the file size to roughly 190 KB (nearly 90% smaller) with virtually no noticeable quality loss.
Frequently Asked Questions
Which format compresses best: JPG, PNG, or WebP?
Modern WebP compression creates files 25% to 35% smaller than JPG at equivalent quality while also supporting transparent backgrounds like PNG. Choose JPG when you need maximum compatibility with legacy software.
Are my personal photos or documents uploaded to any server?
Never. All decoding and compression happen locally inside your browser using HTMLCanvasElement.toBlob(). Your images never leave your computer or phone.
Why is the quality slider disabled when PNG is selected?
PNG is a lossless format that stores exact pixel data without lossy quantization. If you want to shrink a large PNG significantly, switch the output format dropdown to WebP or JPG.