What is the maximum number of images I can compress at once?

You can process up to 40 images per batch, each up to 30 MB, and download them individually or as a ZIP.

Does the Image Compressor reduce quality?

Only to the extent you choose. PNG output is lossless. For JPEG/WebP, the quality slider controls the trade-off between file size and visual fidelity.

Which format should I choose?

WebP is the best all-rounder for the web (small size plus transparency support). Use JPEG for photos shared widely, and PNG when you need sharp text or full transparency.

Are my images uploaded to a server?

No. All compression happens in your browser, so your images never leave your device.

Why is my compressed image still large?

If the original is a high-resolution photo, dimension is usually the main factor. Use the resize option to reduce the longest edge before compressing.

Can I compress images on my phone?

Yes. The tool works in any modern mobile browser with the same features as desktop.

What quality setting should I use for photos?

Start around quality 80 and drop in steps of 5 until you can just see a difference, then step back up one notch. For images with text or logos, keep quality above 85 to avoid smudged edges.

Does compression remove EXIF and location data?

Re-encoding does not automatically strip metadata. For shared photos, export with metadata stripped — the tool offers a clean output for exactly this reason.

What is the best format for a website?

WebP gives JPEG-class size for photos while supporting transparency, and every current browser supports it. Use PNG only where you need lossless quality or full alpha.

Why should I resize before compressing?

Halving the longest edge quarters the pixel count, which is usually a bigger size win than compression alone. Resize to the display size first, then compress.

Can compressing twice cause problems?

Yes — re-saving a lossy file accumulates artefacts. Keep one lossless master and compress a copy for each use, rather than repeatedly saving the compressed version.

How much can I expect to save?

A photo at quality 80 in WebP is typically 60-80% smaller than an untouched JPEG. Very large gains usually come from resizing first, not from compression alone.

Does the tool work with HEIC or raw files?

Browser-based tools accept common web formats — JPEG, PNG, GIF and WebP. Convert HEIC or raw files to JPEG first, then compress.

What is a good image size for a website?

Resize to the maximum display width (often 1200-1920 px) and keep the file under about 300-500 KB for hero images. Smaller thumbnails can be far lighter.

Is compression the same as resizing?

No. Compression reduces file size by discarding data; resizing reduces pixel dimensions. For the biggest savings, do both.

Can I preview the result before downloading?

Yes. The tool shows a live size estimate as you adjust quality and format, so you can compare options before committing to a download.

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Image Compressor

Compress JPG and PNG images online to reduce file size without losing quality. Free and private.

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About Image Compressor