Free Image Compressor

Compress JPG, PNG, and WebP images online without losing quality. Reduce file sizes for faster website loading and easier sharing.

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Max 30MB per file

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How to Compress Images Like a Pro

Image compression reduces file size by removing redundant data while preserving visual quality. Smaller images load faster on websites, send quicker in emails, and take up less storage space.

Quality vs File Size

Higher quality retains more detail but creates larger files. For web use, quality 70-85% is ideal - images look nearly identical to originals but are 50–80% smaller. For thumbnails, quality 40-60% works well.

Target Size Mode

Need an image under 100 KB? Enable target size mode and set your goal. The compressor automatically adjusts the quality slider to hit your exact file size target, saving you manual trial and error.

Batch Compression

Compress multiple images at once to save time. Upload several files, set your quality or target size, and download them all as a ZIP archive. Each image is compressed individually for optimal results.

Lossy vs Lossless

JPEG compression is lossy -- some data is discarded to reduce size. PNG compression is lossless -- quality stays identical. WebP supports both modes. Choose based on whether you need perfect quality or smaller files.

Image Compression Format Comparison

Format	Compression	Best For	Typical Savings
JPEG	Lossy	Photos, web images	50–80%
PNG	Lossless	Screenshots, logos, graphics with text	10-40%
WebP	Lossy + Lossless	Web performance, modern sites	25-35% vs JPEG

When to Compress Images

Website performance: Compress hero images and product photos to improve Core Web Vitals and page load times.
Email attachments: Most email servers reject files over 25 MB. Compression keeps your images within limits.
Social media uploads: Platforms like Instagram and LinkedIn have file size caps. Pre-compress to ensure smooth uploads.
Cloud storage: Reduce backup sizes and save on storage costs by compressing images before archiving.
E-commerce product images: Compressed product photos load faster on shop pages, improving conversion rates and reducing bounce rates on mobile.
CMS and blog uploads: Most content management systems have upload limits. Pre-compress to avoid hitting file size caps and keep your media library lean.

Compression Best Practices

Always keep the original file as a backup before compressing.
Start at quality 80% and adjust down only if the file is still too large.
Use lossless compression (PNG) for screenshots and graphics with sharp text edges.
For website hero images, compress to under 200 KB for fast loading on mobile connections.
Batch compress before uploading to a content management system to save time.
Compress thumbnails aggressively (quality 40-50%) — they are small and fast loading matters most.
Re-compress previously optimized images only if you need even smaller files for a specific use case.

Common Compression Myths

Myth: Compression always ruins quality. Modern compression algorithms preserve visual quality down to 70-80% quality. The difference is often invisible to the human eye while cutting file sizes by more than half.
Myth: You should never compress PNG. PNG compression is lossless — file sizes shrink without any quality loss. Many PNG files have inefficient metadata and color profiles that can be stripped safely.
Myth: WebP always beats JPEG. WebP offers better compression at equivalent quality, but JPEG still wins for compatibility and is better for photographs with subtle gradients at high quality settings.
Myth: Compressing once is enough. Different platforms and use cases need different file sizes. An image for email should be smaller than one for print. Always compress for the specific medium.

Compression & SEO

Page speed is a confirmed Google ranking factor — compressed images load faster and improve user experience signals.
Core Web Vitals track Largest Contentful Paint — hero images that are compressed load before the 2.5-second threshold.
Google Lighthouse flags images that can be compressed further — passing this audit improves your SEO score.
Smaller images reduce bandwidth costs for your hosting and improve time-to-interactive for mobile visitors on slow networks.

Compression Targets by Use Case

Website hero images: Target under 200 KB at quality 80%. Use WebP format for best quality-to-size ratio.
Product photos: Compress to 100-300 KB each. Higher quality (85%) for zoomable images, lower for thumbnails.
Email attachments: Keep images under 500 KB. Most email clients block images over 5-10 MB total.
Social media uploads: Social platforms apply their own upload caps and compress images after upload. Pre-compress to 1-5 MB for fast uploads with the least quality loss.
Blog thumbnails: Compress aggressively to 30-50 KB at quality 60%. Small size matters more than perfection.

Quality Settings Guide

90-100%: Near-lossless. Use for archival, photography portfolios, and print-ready exports.
75-90%: Excellent quality for web. Images look identical to originals but 50-70% smaller. Best for hero images and product photos.
60-75%: Good quality for general web use. Visible only in side-by-side comparisons. Ideal for blog content and galleries.
40-60%: Acceptable for thumbnails and previews. Some artifacts visible in gradients and skies.
Below 40%: Heavy compression for extreme size reduction. Suitable for placeholder images, small thumbnails, and low-bandwidth scenarios.

Private & Secure Compression

All image compression happens locally in your browser using the Canvas API. Your files are never uploaded to any server.

Last updated: August 2026

Learn more: Social Media Image Sizes 2026 · Instagram Image Sizes · LinkedIn Image Sizes

Format

Compression

Best For

Typical Savings

JPEG

Lossy

Photos, web images

50–80%

PNG

Lossless

Screenshots, logos, graphics with text

10-40%

WebP

Lossy + Lossless

Web performance, modern sites

25-35% vs JPEG