Question 1

Is my image data safe?

Accepted Answer

Yes! All image processing is done directly in your browser using JavaScript. Your images are never uploaded to any server. All data is automatically cleared from memory when you close or refresh the page.

Question 2

What image formats are supported?

Accepted Answer

We support JPEG, PNG, and WebP formats. You can compress images in these formats or convert between formats using the MIME type option. WebP typically provides the best compression rate while maintaining quality.

Question 3

What is the best quality setting?

Accepted Answer

For most images, a quality setting of 0.8 (80%) provides the best balance between file size and visual quality. For photos, 0.7-0.8 is recommended. For graphics containing text, you may want to use 0.9 or higher.

Question 4

Why is my PNG file larger after compression?

Accepted Answer

PNG is a lossless format, which means it cannot compress photos as efficiently as JPEG or WebP. For photos, we recommend converting to WebP or JPEG format for better compression. PNG is best for graphics with few colors, screenshots, and images requiring transparency.

Question 5

Can I compress multiple images at once?

Accepted Answer

Yes! Our tool supports batch compression. Switch to 'Batch Images' mode to upload and compress multiple images simultaneously. You can compress dozens of images at once with the same quality settings, then download them individually.

Question 6

What does retain Exif mean?

Accepted Answer

Exif data contains metadata about the image, such as camera settings, GPS location, and date taken. Enabling this option preserves this information in the compressed image. Disable it for smaller file sizes or to remove sensitive location data.

Question 7

What is the maximum file size I can compress?

Accepted Answer

Since processing happens in your browser, the limit depends on your device's available memory. We cap files at 100 MB per image to keep compression fast and reliable. For very large images, we recommend resizing first.

Question 8

Is this tool completely free?

Accepted Answer

Yes, this image compression tool is 100% free with no watermarks, no registration required, and no hidden fees. To protect your device's memory, each file can be up to 100 MB (500 MB per batch, up to 50 files).

Image Compressor & Size Reducer - FAQ