Free Image Compressor

Shrink image file size up to 90% — batch compress JPG, PNG & WebP instantly

Upload multiple images, adjust quality and format, and compress instantly in your browser. Compare before/after size for every file and download all results together as a zip — no upload to any server, ever.

100% free

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Free Image Compressor — Reduce File Size

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Click to upload or drag images here — JPG, PNG, WebP (multiple files supported)

Quality: 75%

Output Format

Max Width (optional, px)

Why Compress Images Before Uploading?

Large images are the #1 cause of slow-loading websites and Shopify stores

Uncompressed photos straight from a phone or camera are often 3-10MB — far larger than needed for web display. Every extra megabyte adds load time, which directly hurts Core Web Vitals scores, SEO rankings, and conversion rates on eCommerce sites. Compressing images before upload can cut file sizes by 50-90% with no visible quality difference, since most of the removed data is redundant detail the human eye can't perceive at normal viewing sizes.

This tool compresses images entirely in your browser using the HTML5 Canvas API — files are never uploaded to a server, so processing is instant and your images stay completely private.

JPG vs PNG vs WebP — Which Should You Use?

Format	Best For	Transparency	Typical File Size
JPG	Photos, product images, banners	No	Small — good for photos
PNG	Logos, icons, screenshots with text	Yes	Larger — best for flat colors/text
WebP	Everything — modern replacement for both	Yes	Smallest — 25-35% smaller than JPG/PNG

Image Optimization Best Practices

🎚️ Aim for 70-80% Quality

This range typically cuts file size in half or more with no perceptible quality loss for most photos. Going below 60% starts introducing visible compression artifacts.

📐 Resize Before Compressing

If your image displays at 800px wide on your site, there's no benefit to keeping it at 4000px. Use the Max Width option to resize first — it reduces file size far more than quality adjustment alone.

🌐 Switch to WebP

WebP is supported by every modern browser and typically produces 25-35% smaller files than JPG or PNG at equal visual quality — an easy win for site speed.

🛍️ Critical for Shopify Stores

Product images are usually the heaviest assets on an eCommerce page. Compressing them directly improves PageSpeed scores, mobile load time, and search ranking.

🔁 Batch Process in Bulk

Compress your entire product photo folder at once instead of one-by-one — this tool supports multiple files in a single pass with consistent settings.

🧪 Always Preview Before Publishing

Check compressed images at actual display size before replacing originals — this catches over-compression on images with fine detail or gradients.

Want Your Shopify Store Fully Speed-Optimized?

Codify Infotech handles image optimization, lazy-loading, and full Core Web Vitals fixes for Shopify stores

Get Free Consultation Test Your Store Speed

Frequently Asked Questions

Yes. Codify Infotech's Image Compressor is 100% free with no signup, no watermark, and no limit on how many images you compress.

No. All compression happens directly in your browser using the Canvas API. Your images are never uploaded, transmitted, or stored anywhere — they stay entirely on your device.

Reduction depends on the original image and quality setting, but JPG and WebP images typically shrink 50-90% at quality settings between 60-80% with minimal visible quality loss, since most of that data is redundant detail the human eye can't perceive.

Use JPG for photos and complex images where small file size matters more than perfect transparency. Use PNG when you need transparency or crisp text/logos with sharp edges. Use WebP for the best of both worlds — it typically produces smaller files than JPG and PNG at equivalent quality, and is supported by all modern browsers.

Yes. This tool supports batch compression — upload or drag multiple images at once, adjust settings, and download all compressed files together as a single zip file.

Not unless you choose to. By default, compression only reduces file size by optimizing encoding quality while keeping the original width and height. An optional resize setting is available if you also want to reduce dimensions.