Image size guides
Short, practical guides for the questions people ask most: how to make a picture smaller without making it look worse, which file format to choose, and how to get a photo through an online form that has a strict size limit.
How to reduce image size without losing quality
The four steps that matter, in the right order, and the mistakes that make files bigger or blurrier.
Read the guideJPG, PNG or WebP: which format should you use?
What each format is good at, where each one fails, and a simple way to choose.
Read the guidePhoto size for online forms: KB limits, pixels and formats
How to read a size requirement and how to get a photo under 20 KB, 50 KB or 200 KB.
Read the guide
Each guide answers one practical question in plain language, with steps you can follow in a few minutes. They are written for people who just want a picture to be accepted by a form, a website or a message, not for photo experts.
If you are in a hurry, open the free image resizer and come back to a guide when you want to understand why a file is too big or which format to choose. Nothing you add to the tool is uploaded: your pictures stay on your device.
Open the free image resizerFrequently asked questions
Which guide should I read first?
Start with the guide on reducing image size without losing quality. It explains the four steps that matter most. Then read the guide on formats or the one on online forms, depending on your goal.
Are the guides free?
Yes. All guides and tools are free, with no account and no signup.
How often are the guides updated?
We update them when form rules, browsers or file formats change. Always follow the official instructions of the site where you upload your photo.
Can I use the tool while I read?
Yes. Open the image resizer in another tab, or use the link at the bottom of each guide.