Why doesn't PNG appear as an output option?

PNG is a lossless format, so the quality slider has no effect — the output size is determined purely by the image content, not a quality parameter. JPEG and WebP are both lossy formats that genuinely compress by trading a small amount of quality for a much smaller file.

What quality setting should I use?

For most web images, 70-85% is the sweet spot — files are significantly smaller while the difference is barely visible to the human eye. For print or high-fidelity needs, use 90%+.

What is the difference between JPEG and WebP compression?

At the same quality setting, WebP typically produces files 25-35% smaller than JPEG. WebP is supported by all modern browsers. Use JPEG for maximum compatibility with older systems or software that doesn't support WebP.

Can I compress an already-compressed image?

Yes, but with diminishing returns. Each round of lossy compression introduces new artifacts. It's best to always compress from the original high-quality source file to get the smallest output with the best quality.

Image Compressor

Compress images to reduce file size while maintaining quality — 100% in-browser.

Converters

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Click or drag an image here

Supports JPG, PNG, WebP

Compression Settings

Quality80%

10 (Max compress)100 (Best quality)

Output Format

Processed locally. No upload.

Why Compress Images?

Image compression reduces file size while maintaining acceptable quality, making websites load faster, saving storage space, and reducing bandwidth costs.

SEO Impact

• Google prioritizes page speed in rankings • Compressed images improve Core Web Vitals • Users are less likely to bounce from fast pages

Local Processing

Your images are processed entirely in your browser. No data is ever sent to our servers.

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Image Converter

Convert, resize, and compress images online. 100% private and secure.

How to Use

1
Upload your image by clicking the upload area or dragging and dropping a file.
2
Adjust the Quality slider — lower values mean smaller files with more compression artifacts; higher values maintain better visual quality.
3
Select the output format: JPEG for photos, or WebP for the smallest modern web-ready files.
4
Click 'Compress Image', review the before/after sizes and savings percentage, then download.

Use Cases

Website Performance

Compress hero images, product photos, and blog thumbnails to reduce page weight and improve Core Web Vitals scores, which directly impact Google rankings.

Social Media Uploads

Compress images before uploading to Instagram, Facebook, or LINE to avoid additional re-compression by the platform that can degrade quality.

Email Attachments

Reduce image file size before attaching to emails to stay within size limits and ensure fast delivery.

Cloud Storage Savings

Compress a batch of photos before backing them up to Google Drive, Dropbox, or iCloud to reduce storage usage and costs.

Frequently Asked Questions

Image Compressor reduces your image file size using quality-adjusted encoding directly in your browser — no uploads, no servers, fully private.

No. All compression is done locally in your browser using the Canvas API. Your images never leave your device.