Image Converter & Compressor
Convert images between WebP, PNG, JPEG, HEIC, and AVIF and optimize files with live size results. Everything is processed securely.
Select image to optimize
Supports PNG, JPEG, WEBP, HEIC, AVIF, SVG and GIF
Processed securely. Photos are safe and private.🛠️ More Image Editors You Might Need
You can download videos from YouTube, Instagram, and 50+ sites directly in your browser — no software needed.
Free Video Downloader — Try it free →Frequently Asked Questions
Fast client-side conversions and visual compression explained.
You can convert and optimize JPEG, PNG, WebP, and other common formats. You can transcode between WebP, PNG, and JPEG seamlessly in your browser.
The quality slider adjusts the compression level for JPEG and WebP formats. Dragging it lower reduces the visual data complexity and dramatically shrinks file size, while keeping it higher preserves original pixel fidelity.
Our image editor supports batch processing, allowing you to drag several files in, adjust their output quality collectively, and download them all as a streamlined export.
No. All scaling, compression, and format encoding are conducted locally using the browser's native HTML5 Canvas API. Your photos remain fully private.
WebP offers superior lossy and lossless compression, resulting in file sizes that are up to 30% smaller than JPEGs or PNGs without any noticeable loss in image quality.
Yes! ZenithToolkit calculates the compression output and displays a visual file comparison chart instantly on your screen as soon as you hit 'Convert & Compress'.