Compress up to 20 JPG, PNG and WebP images at once — right in your browser. No upload, no account, no watermark. Works on Android, iPhone and desktop.
20images at once
Up to 90%size reduction
0 bytessent to server
Freealways
🖼 Bulk compression: Drop multiple images at once. Each is compressed locally using your browser's Canvas API — nothing is uploaded. Output as JPG or WebP with quality you control.
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Drop images here or click to browse
JPG · PNG · WebP · GIF — up to 20 images at once
Output Quality
80%
Lower = smaller file · Higher = better quality
Output Format
Resize (optional — leave blank to keep original size)
×px
Images
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Original
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Compressed
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Saved
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Add images above to get started
How to compress images online free — step by step
This bulk image compressor lets you reduce the file size of JPG, PNG and WebP images directly inside your browser using the Canvas API. There is no file upload, no server processing, and nothing is sent anywhere. Your images stay completely private on your device.
STEP 1
Add your images
Drag and drop up to 20 images at once, or tap to browse and select from your phone or computer.
STEP 2
Set quality and format
Choose output quality (1–100%), output format (JPG, WebP or PNG) and an optional resize dimension.
STEP 3
Compress and download
Click Compress All. Download individual images or get all compressed images in one ZIP file.
When should you use JPG, WebP or PNG output?
JPG is best for photos and images with many colors. It is the most compatible format and works everywhere — on older phones, apps and websites. Use JPG when you need maximum compatibility.
WebP produces the smallest file sizes at the same visual quality as JPG. It is supported by all modern browsers and Android and iPhone. Use WebP for website images and social media to get faster loading times.
PNG is a lossless format — it does not reduce quality, only removes unnecessary metadata. Use PNG when you need to keep sharp edges, transparency or exact pixel colors, such as logos and screenshots.
Best settings for common use cases
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WhatsApp & social media
Quality 70%, JPG format. Small enough to send quickly while looking good on a phone screen.
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Website images
Quality 75-80%, WebP format. Fastest loading with the smallest file size for web pages.
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Email attachments
Quality 65%, JPG format, resize to max 1200px width. Keeps emails under attachment size limits.
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Print and archive
Quality 90-95%, PNG for lossless. Keep original resolution for high quality print output.
Why compress images before sharing?
Modern phone cameras take photos between 3MB and 12MB each. Sending multiple uncompressed photos over WhatsApp, email or Telegram uses a lot of data, takes longer to upload and download, and can hit attachment size limits. Compressing images to 200KB–500KB keeps them looking good on any screen while being fast to share.
For websites, uncompressed images are the single biggest cause of slow page loading. Google's PageSpeed Insights and Core Web Vitals score pages lower when images are not optimized. Compressing your images to WebP format before uploading to your website can cut page load time in half.
Frequently asked questions
How do I compress multiple images at once?+
Select or drag and drop up to 20 images onto the tool. Set your quality and format, then click Compress All. When done, download each image individually or use Download All to get a ZIP file with all compressed images.
Are my images uploaded to a server?+
No. Everything runs inside your browser using the Canvas API. Your images never leave your device and are never sent to any server, making this completely private.
What image formats are supported?+
JPG, PNG, WebP and GIF are supported as input. You can output compressed images as JPG, WebP or PNG. WebP gives the smallest output file size for most images.
How much can I reduce image file size?+
Most JPG and PNG images shrink by 40–80% at Medium quality. Large PNG files with transparency can sometimes shrink by up to 90%. The exact amount depends on the image content and your original file.
Does this work on mobile phones?+
Yes. The image compressor works in Chrome on Android and Safari on iPhone. You can select photos directly from your camera roll. There is no app to install.
What is the difference between JPG and WebP?+
WebP is a newer format that produces 25–35% smaller files than JPG at the same visual quality. It works in all modern browsers and is ideal for websites. JPG is better for maximum compatibility with older devices and apps.