Compressing a photo before WhatsApp is about reducing weight and making sending easier, not about hitting a magic number. The app may treat the image again when it receives it; still, starting from a lighter file helps.
What you can and cannot expect
ToolZen compresses JPEG, PNG and WEBP on the server. It does not convert HEIC. It does not publish a WhatsApp megabyte cap because that figure changes and depends on how you send the file. Success is a valid, lighter image, not a fixed percentage.
Compress the photo step by step
- Use a format the tool acceptsJPEG, PNG or WEBP. If the photo is in HEIC (typical of iPhone), export it to JPEG from the phone first.
- Compress the imageUpload it to compress image and download the result. It keeps the same format; there is no guaranteed saving percentage.
- Send it as a file if quality mattersAttach it in the chat. If you want to keep more detail, many clients let you send it as a document instead of a gallery photo.
If the photo is huge in pixels, resizing it a little first usually saves more than compressing blindly. For a web form the criterion is different: lighten it with the upload in mind, not the chat.