Which output format should I choose?

JPG is broadly compatible for photos, WebP is efficient for modern web use, and PNG is useful when transparency or lossless output matters.

Can compression make an image larger?

Yes. Some source images are already efficient, and PNG output can be larger than JPG or WebP for photographic content.

Browser-based utility

Compress Image

Q: What should I reduce first: dimensions or quality?

For oversized phone and camera photos, reducing pixel dimensions usually gives the biggest practical size reduction before lowering quality.

Reduce image dimensions and file size locally in your browser. Choose the output format, quality and maximum width, then download the result.

Compress your image

Use a smaller maximum width first, then lower quality if you need an even smaller photographic file.

Image quality

82%

How to make an image file smaller

Choose the image.
Select JPG, WebP or PNG output.
Set a maximum width and quality.
Compress and compare the actual before-and-after size.

What should I change first?

For very large phone or camera photos, reducing the pixel dimensions usually gives the biggest practical size reduction. If the file is still too large, lower JPEG or WebP quality gradually.

Common questions

What should I change first to make an image smaller?

Reducing oversized pixel dimensions often gives the largest practical reduction. Lower JPEG or WebP quality gradually after that if needed.

Does image compression preserve transparency?

PNG preserves transparency. WebP can preserve transparency in supported browsers. JPG does not support transparent pixels.

Can I compress HEIC photos?

Supported browsers can decode HEIC through the site's HEIC helper and export a common image format.

Related image tools

Crop imageTrim the picture before or after compression.Check image resolutionSee pixel dimensions, megapixels and embedded DPI.HEIC to JPGMake iPhone photos easier to upload and share.JPG to WebPCreate a modern web image when the destination supports it.Fix an image that is too largeUse dimensions and quality in the right order.