Free Image Compressor: Private & Secure
Reduces image file size by re-encoding at lower quality or smaller dimensions. Typical reductions: 30-80% for photos, 10-40% for already-compressed JPEGs. Quality is adjustable. All processing happens in your browser.
🔒 Your files stay in your browser
For this file tool, processing happens on your device — we don't receive, store, or transmit your file contents.
Drop images here or click to upload
JPG, PNG, WebP, GIF. Up to 20 images
How to Compress Images
- 1
Upload your images
Drag and drop JPG, PNG, WebP, or GIF images onto the upload zone, or click to browse. You can add up to 20 images at once.
- 2
Adjust compression settings
Set the quality level (lower = smaller file), choose a maximum dimension to resize large images, and select your preferred output format (JPEG, PNG, or WebP).
- 3
Compress locally
Click Compress. All processing happens in your browser using WebAssembly. Your files are never uploaded or sent anywhere.
- 4
Download your results
Review the original vs. compressed sizes for each image, then download files individually or click 'Download all as ZIP' to get everything in one archive.
Features
Browser-Local Processing
Images are processed in your browser using WebAssembly and browser file APIs. The tool does not upload selected images to our servers.
Batch Compression
Compress up to 20 images simultaneously. All files are processed in parallel using Web Workers so the UI stays responsive.
Quality & Dimension Control
Fine-tune compression with a quality slider (10–100%) and an optional max dimension setting to resize large images.
Format Conversion
Output as JPEG, PNG, or WebP regardless of input format. Convert PNGs to WebP for smaller web-ready images.
ZIP Download
Download all compressed images in a single ZIP archive with one click, or save individual files separately.
Before & After Stats
See the original size, output size, and percentage change for each image so you can decide whether the result is useful.
How Your Privacy Is Protected
The Image Compressoris built with a privacy-first architecture. Here's how file contents stay on your device — not as a policy, but by how the tool is built.
No file uploads
Your files are processed using browser APIs (Web Workers, Canvas, File API). For this tool, file contents stay on your device.
Local processing only
All computation happens in your browser using your device's CPU. Our servers don't process your file contents.
Works offline
Once the page loads, you can disconnect from the internet and the tool will still work perfectly.
We don't see your files
For this file-processing tool, there's no upload endpoint — files are read and processed entirely by your browser.
Use Cases
Website Optimization
Reduce page load times by compressing images before uploading to your CMS, e-commerce platform, or static site.
Email Attachments
Shrink large photos so they can be sent as email attachments without hitting the size limits imposed by email providers.
Social Media Uploads
Reduce large images before uploading to Instagram, X (Twitter), LinkedIn, and Facebook while choosing the quality level that works for your file.
Document & Report Images
Compress screenshots and diagrams before embedding them in Word documents, PDFs, or presentations to keep file sizes manageable.
Storage Optimization
Batch-compress a folder of photos to free up storage space on your device, cloud storage, or backup drive.