Two ways to make an image lighter
The quick way is to choose a quality level. High keeps almost all the detail, medium is a good balance for sharing and websites, and low gives you the smallest files when detail matters less. You'll see the size before, the size after and the percentage saved for every image.
The precise way is the “to X KB” mode. Type the size a form, portal or app asks for, and ConvertirDocs looks for the best quality that still fits under that number. If an image can't get that small, you still get the smallest version it reached, along with a clear message saying the target wasn't met. And if compressing doesn't make a file any smaller, you simply get your original back.
Resize while you compress
Phone cameras take photos far bigger than a screen can show. Lowering the quality helps, but reducing the dimensions often helps even more. Turn on the option to limit the longest side (for example to 1920 px) and every image is scaled down proportionally before it's compressed, so nothing gets stretched or cut.
This is the fastest way to prepare a batch of vacation photos for email, a product gallery for an online store, or pictures for a listing that rejects large uploads.
PNG screenshots and graphics
PNG is great for screenshots, logos, diagrams and anything with sharp edges or transparency. To make a PNG lighter, ConvertirDocs reduces its colors to a palette of up to 256. Screenshots and flat graphics usually look the same afterward, but weigh less.
Photos are a different story. A photo saved as PNG stays heavy even after compression, because it has too many colors for a small palette. For photos, converting to JPG or WEBP with “Convert image” usually gives a much lighter file.
Private by design, and free
Your images are processed by your own browser and never leave your device. Nothing is uploaded and nothing is stored. There's no account to create, no email to confirm and no daily limit: the tool is 100% free.
When an image is compressed, its EXIF data is removed, including the GPS location your phone may have saved with the photo. That makes compressed photos safer to post or send to strangers. The camera orientation is respected, so pictures don't end up sideways.