Image Compressor by CleverHumanizer

Upload limits are where this tool earns its keep. A visa portal wants a photo under 200 KB, a job application caps files at 1 MB, an email bounces a batch of phone pictures. Image Compressor lets you pick Fit a size limit, type the number the form allows, and it adjusts JPEG quality step by step until the file fits. If you'd rather not think in kilobytes, a quality preset such as Balanced does the job.

The page also makes a point that's easy to miss. A 6000-pixel phone photo shown at 800 pixels wide gains nothing from the extra resolution, so setting a maximum width before compressing usually keeps the image sharper than crushing quality alone. The tool takes JPG, PNG and WebP, mixed in one batch, and shows the original and compressed size for each file. If re-encoding wouldn't make a file smaller and no resize is needed, it keeps the original.

Students, job seekers and anyone filling in forms with strict file limits, plus website editors trimming images before upload. It is free with no account and no watermark.

Resized or compressed output is JPEG, so transparent backgrounds don't survive. The page sends you to its Image Resizer if you need PNG output. Very small targets may need a smaller width as well as stronger compression, and it's worth checking the result by eye.

The compressor runs as JavaScript on your device. The page says files are never uploaded and that the tool keeps working if you go offline after loading it. It sits in a larger collection of free tools on CleverHumanizer, whose headline products are an AI humanizer, detector and paraphraser.