Practical privacy guides

Guides

Tell CASTARA what you have and what you need

Start with the input file you already have, then choose the tool named for the result you want.

Use the tools without registering. An account adds convenience and rewards; it is not required for core conversion.

Reduce image size while keeping quality, privacy and the final use in mind.

The best image format depends on content, transparency and compatibility.

A smaller pixel size often saves more space than aggressive quality reduction.

Combine documents carefully while keeping privacy and accuracy in mind.

Extract a range or create one document for each page.

Careful file handling can reduce unnecessary exposure of private information.

Match a form's dimensions, format and file-size limit before submitting.

Turn a sequence of scans or photographs into a single document.

Start with the file you already have and the result you want to create.