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I have 150 catalog photos but the compressor takes 30 at a time. How do I handle them?

Split the catalog into groups of 30, compress each group with the same settings, download a ZIP per group, and press Reset before starting the next one. 150 photos means five rounds, and each round takes a few minutes depending on how powerful your device is.

Published · 3 min read

The limits, exactly

  • Up to 30 images per selection or drop. Pick more and the tool takes the first 30 and shows a message saying the rest were ignored.
  • Each image up to 40 MB. A larger one is rejected with a message that names it.
  • Each image up to 50 megapixels. A 12 megapixel phone photo, 4032×3024, is under a quarter of that.
  • These are tested limits, and actual speed depends on your device, because compression runs in your browser rather than on a server.

One detail people miss: if you add a second group without pressing Reset, its photos join the current list, and the next ZIP contains both groups. That is not a bug, but it muddles your order and loads up the device.

A five-round plan

  1. Before you start, split the photos into folders on your computer, 01 to 05, with 30 in each. You can split by section, such as abayas, then shoes, then bags.
  2. Open the Image compressor and select every photo in the first folder.
  3. Set the format and quality once, for example JPEG at 80, and jot them down so you do not forget.
  4. Check the table, press Download all, and rename the ZIP after the folder, such as catalog-01.zip, because the tool names every bundle compressed-images.zip.
  5. Press Reset, then move on to the next folder with the same settings.

Why keep the settings identical?

A catalog is seen as one piece. If you compress abayas at 85 and shoes at 70, a customer browsing between sections may notice some pages look smoother or rougher than others. Fixing the format and quality gives you a consistent look and similar file sizes. If certain photos need a higher quality, such as patterned fabric, gather them into a round of their own instead of changing settings halfway through.

Ways to speed things up

  • If the photos are at full camera resolution and you display them much smaller, reduce their dimensions first with the Image resizer. Compression afterwards is faster and the files lighter.
  • Use a computer rather than a phone for big rounds, since all the work happens on your device.
  • Close other heavy tabs while processing if you notice slowdowns.
  • Do not delete the originals after compressing. Keep them in a separate folder in case you need to edit later.

Common questions

Is there a daily limit on rounds?

No. The only limit is 30 images at a time, and you can repeat rounds as often as you like.

The tool refused one photo in the group. Why?

Read the message: either it is over 40 MB, its dimensions exceed 50 megapixels, or it is not a JPEG, PNG or WebP file.

Are my photos kept between rounds?

No, nothing is stored on any server. Reset simply clears the list from the page.