Batch image work in the browser: what I tested
I keep running into the same small job: a batch of product or blog images that are slightly too large, in the wrong format, or both. Installing a desktop editor for that always felt like overkill, so I tried doing the wh
I keep running into the same small job: a batch of product or blog images that are slightly too large, in the wrong format, or both. Installing a desktop editor for that always felt like overkill, so I tried doing the whole thing in the browser instead.
For this test I used a real file I had on hand: a 1080x1250 PNG at 120KB. I opened the browser tool, dropped the image in, resized it, and converted it to JPEG. The result was a 47KB JPEG, and the tool reported the job took 31ms. That is roughly a 60% smaller file, with no visible difference at the size I was using it for.
What stood out to me was not just the number. The tool is free, it adds no watermark, and the processing happens locally in the browser β the file is not uploaded to a server first. For a quick resize-and-convert job, that removes most of the friction: no account, no installer, and no waiting for an upload and a download.
The workflow itself is simple. You open the tool, add one image or a batch, choose the output size and format, and download the result. I tested a single image for the numbers above, but the same steps apply when you repeat them across a set of images, which is where the time saving really shows up. If you are preparing images for a shop listing, a blog post, or a slide deck, doing them together beats opening and exporting each file by hand.
There are limits, of course. A 31ms result is for one image on my machine, and your time will vary with file size, image content, and your browser. JPEG also is not the right choice for every image β graphics with sharp text or transparency are usually better kept as PNG. But for ordinary photos and screenshots that just need to be smaller and web-ready, this was more than good enough.
My takeaway is simple: for routine batch image work, I no longer reach for installed software first. I test it in the browser, check the output size and quality, and only move to a heavier tool if the result is not good enough. On this test, it was.
Try the tool I used here: Compress Images
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