Is my image data sent to a server?

No. All processing happens entirely in your browser.

Should I choose WebP or AVIF?

WebP for maximum compatibility, AVIF for maximum compression.

Are there file limits?

No. Since no server is involved, there are no limits.

Yes, completely free with no usage limits.

Image Compressor & WebP/AVIF Batch Converter (Free, No Upload, Unlimited)

⚠️ This tool requires JavaScript to be enabled for image compression and conversion.

📖 About 🔰 How to Use 📚 Glossary ❓ FAQ 💡 Use Cases

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Browser-Based

No image data is sent to any server

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No Registration

No account needed, unlimited files

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WebP / AVIF

Next-gen formats for 50%+ size reduction

Compression & Conversion Settings

Output Format

* Transparent PNGs converted to JPEG will have a white background.

Quality

80%

* Lower values = smaller files but lower quality. ~80% is recommended for web use.

add_photo_alternate

Drag & drop images here

JPEG, PNG, WebP, GIF, BMP, AVIF / No file limits

Image Compressor & WebP/AVIF Converter is a free browser-based tool for compressing and converting JPEG, PNG, GIF, and BMP images.

Convert to WebP (25-34% smaller than JPEG) or AVIF (30-50% smaller still) to dramatically improve Core Web Vitals (LCP) and boost SEO rankings.

All processing happens entirely in your browser. No image data is ever sent to any server.

Choose Format & Quality

Select output format (WebP / AVIF / JPEG / PNG / Original) and compression quality.

Drag & Drop Images

Drop files onto the upload area or click "Select Files". Multiple files supported.

Download Results

View compression ratios and download individually or as a ZIP bundle.

WebP: Next-gen image format by Google. Same visual quality as JPEG at 25-34% smaller file size. Supports transparency. Supported by all major browsers.
AVIF: Latest image format by AOM (Alliance for Open Media). 30-50% smaller than WebP with HDR and wide color gamut support. Supported in Chrome 121+ and Firefox 131+.
Core Web Vitals: Google's quality metrics for websites. LCP (Largest Contentful Paint) is directly improved by image optimization and directly affects search rankings.
Quality: Compression strength. 100% = no compression, lower values = smaller files but reduced quality. ~80% is recommended for web.

Q. Is my image data sent to a server?: A. No. All processing happens entirely in your browser. No image data is ever uploaded or stored on our servers.
Q. Should I choose WebP or AVIF?: A. WebP for maximum browser compatibility (~100% support); AVIF for maximum compression (Chrome & Firefox). WebP is the safest all-around choice.
Q. AVIF conversion isn't working: A. AVIF encoding depends on browser support. Use Chrome 121+ or Firefox 131+. Unsupported browsers automatically fall back to WebP.
Q. What about transparent PNG images?: A. Transparency is preserved in WebP, AVIF, and PNG. JPEG doesn't support transparency, so the background becomes white.
Q. Are there file limits?: A. No. Since no server is involved, there are no file count or size limits. For hundreds of files, process in batches of ~50.
Q. Is it free?: A. Yes. Completely free with no usage limits.

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Website Speed Optimization

Convert images to WebP/AVIF to improve Core Web Vitals. Better SEO rankings and lower bounce rates.

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Email Attachments

Compress in original format to stay under email size limits while preserving compatibility.

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Social Media & Blogs

Reduce file sizes for platforms with upload limits. Maintain quality while cutting size.

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Confidential Images

Safely compress sensitive documents and scans without uploading to any external server.

Movie & Image Processing