Compress Images Online for Free
Supports: JPG, PNG, SVG, GIF, WebP, AVIF (Batch Upload Supported)
Drag & Drop your images here
or
Compression Settings
Enter width, height, or both. Aspect ratio lock keeps proportions.
Compressing images...
Why Use Buzz Image Compressor?
The fastest, privacy-first image compression tool — no uploads, all processing happens in your browser.
Image Format Comparison
| Format | Best For | Compression | Transparency | Animation |
|---|---|---|---|---|
| JPEG | Photos, screenshots | Lossy | close | close |
| PNG | Logos, icons, graphics | Lossless | check | close |
| WebP | Web images (all types) | Both | check | check |
| SVG | Icons, illustrations | Vector (scalable) | check | check |
| GIF | Simple animations | Lossless | check | check |
How to Compress Images in 3 Easy Steps
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Upload Your Images
Drag and drop your JPG, PNG, SVG, GIF, or WebP files into the upload area, or click "Select from Computer" to browse. You can upload multiple files at once.
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Choose Your Settings
Use the Quality Slider for simple compression, or switch to Target File Size mode to hit an exact size. Pick your output format (WebP recommended for web), set max dimensions, and enable SVG optimization if needed.
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Download Compressed Files
Each image shows a before/after comparison slider. Download individual images or grab everything at once with the "Download All as ZIP" button.
Frequently Asked Questions
How does image compression work?
Our tool uses the Compressor.js library to reduce file size by adjusting quality parameters, removing EXIF metadata, and optimizing color profiles. For SVGs, we strip unnecessary whitespace, comments, and metadata. All processing happens locally in your browser — your images are never uploaded to any server.
Is it safe to compress images online?
Yes, completely safe! Unlike other tools that upload your images to remote servers, Buzz Image Compressor does 100% of the work in your browser using JavaScript. Your files never leave your device, ensuring total privacy and security.
What's the difference between Quality Slider and Target File Size mode?
Quality Slider lets you visually pick a compression level (0–100%). Target File Size mode uses binary search to automatically find the optimal quality setting that produces an output close to your desired file size in KB. This is great when you have strict size limits (e.g., for email attachments or website performance budgets).
Which output format should I choose?
WebP is recommended for web use — it offers 25–35% smaller files than JPEG/PNG at the same quality. JPEG is best for photographs. PNG is ideal for images needing transparency (logos, icons). Choose Original Format to keep the same format while still reducing file size.
Can I compress multiple images at once?
Absolutely! You can upload as many images as you want via drag-and-drop or file selection. Each image is compressed individually with your chosen settings. Use the "Download All as ZIP" button to get everything in one convenient file.
Does compression reduce image quality?
Some quality loss is inevitable with lossy compression (JPEG, WebP), but our tool is designed to find the best balance. Use the before/after comparison slider to see the difference. For lossless formats (PNG, SVG), we optimize without any visual quality loss.