Start with the intended use

An image that fills a website content column usually does not need the full width of a modern phone camera. Email attachments and marketplace photos also benefit from smaller dimensions, while images intended for large prints should retain more pixels.

Compress and compare

  1. Keep the original image and choose a copy in FilePebble's image compressor.
  2. Create the compressed version and compare its file size with the original.
  3. View the result at 100% and check faces, text, product edges, gradients, and other important details before using it.

Avoid repeated compression

Compress from the best available original once. Repeatedly editing and saving an already compressed JPG can introduce blocky edges and halos. For logos, screenshots, or graphics with transparency, PNG or WebP may preserve edges better than JPG.

Match dimensions to display size

Uploading a 5000-pixel photo into an 800-pixel content area wastes bandwidth without improving what most visitors see. Export near the largest real display size, while allowing extra resolution only when zooming or high-density screens require it.

Measure quality deliberately

Compare the source and result at 100% zoom and at the final display size. Look for halos around text, blockiness in shadows, banding in gradients, and smearing around hair or foliage. A moderate reduction that stays clean is better than a tiny file that looks damaged.