How does the image compressor work?

The image compressor uses your browser's built-in Canvas API to redraw and re-encode each image at your chosen quality level and output format. No image data is ever sent to a server — everything happens locally in your browser.

What image formats can I compress?

You can upload JPG, PNG, WebP, and GIF images. The output format can be set to JPG, WebP, or PNG. Converting to WebP typically gives the best compression ratios for web use.

Does reducing quality noticeably affect the image?

At 70–85% quality, the difference is usually invisible to the human eye while file sizes can be reduced by 50–80%. Below 50% you may start to see JPEG artifacts. We recommend 75% as a good balance between quality and size.

Can I compress multiple images at once?

Yes — you can upload multiple images at once using the file picker or by dragging and dropping a batch of files. A "Download All" button appears when multiple images are loaded.

Is my image data private?

Completely. Your images never leave your device. All compression is done using the Canvas API directly in your browser. No account, no upload, no storage — completely private.

Free Online Image Compressor — Compress JPG, PNG & WebP Without Losing Quality

Our free online image compressor lets you reduce the file size of JPG, PNG, and WebP images instantly — no signup, no server upload, and no quality limit. Drag and drop one or multiple images, adjust the quality slider, choose your output format (JPG, WebP, or PNG), and download the compressed results immediately.

The tool works entirely in your browser using the Canvas API. Your images never leave your device, making it 100% private and GDPR-friendly. It works on mobile, tablet, and desktop — and supports batch compression with a single “Download All” button.

How to Compress an Image

Upload — click the drop zone or drag and drop your JPG, PNG, or WebP images.
Adjust quality — drag the slider. 75% is recommended for most web images.
Choose format — pick JPG (smallest), WebP (modern browsers), or PNG (lossless).
Compare — see before/after file sizes and the savings percentage live.
Download — click Download per image, or Download All for a batch export.

Frequently Asked Questions

What quality setting should I use?

75% quality is a great default — it typically reduces file sizes by 50–80% with no visible difference. For hero images and photography, try 80–85%. For thumbnails and icons, 60–70% is fine.

Which output format is smallest?

WebP typically produces the smallest files (25–35% smaller than equivalent JPEG) and is supported by all modern browsers. Use JPG for maximum compatibility, and PNG only when you need transparency.

Can I bulk compress images?

Yes — select or drop multiple images at once. All will be compressed in parallel. A “Download All” button appears so you can grab everything in one click.

Does it resize or crop the image?

No — the tool preserves the original dimensions. It only adjusts encoding quality and format. To resize, you would need a separate tool.

Is this tool safe to use for private images?

Completely safe. No image is ever uploaded to any server. All processing happens locally in your browser using the Canvas API — your files stay on your device.

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Free Online Image Compressor

Compress JPG, PNG & WebP images instantly — no upload, no server, 100% private.

Quality: 75%

Smallest fileBest quality

Output Format

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Click to upload or drag & drop images here

JPG, PNG, WebP, GIF — up to any size