Terms of Use

Features and charges

Basic Images to PDF features are free, including image selection, ordering, collage, long-screenshot pagination, A4 portrait layout, preview and high-quality PDF export. PDF compression, optional signing after compression and YunyuTrace verification are free. Directly adding verification information to existing files is currently unavailable. There are no memberships, subscriptions or automatic renewals.

What verification means

Successful file verification means the current file bytes exactly match one registered version under the verification code. With optional signing after compression, a verified original can retain its code while adding a compressed version; the original record is preserved. Editing, saving again, compression and format conversion can change file digests. Verification does not determine whether screenshot content is authentic and does not provide legal advice, evidence admissibility assessments or content authentication.

File processing

Image collages preserve aspect ratios. Screenshot layout changes image size, position and pagination, with small overlaps at page breaks where needed. It does not intentionally alter the image body. Images to PDF exports automatically include file verification information. Keep your original files.

Tasks and downloads

Keep the current page open until your download is complete. The service does not store user files, provide a cloud file library or recover historical files. Generated files can be downloaded again from the current page.

Scope of use

Process only files you are entitled to use. Encrypted, damaged, oversized or incompatible files may not be supported. Previews help you confirm order and layout. Check whether generated files meet your requirements before using them.

Custom exports

Basic PDF page replacement and insertion are free. Custom watermarks, footer changes and scan conversion are paid export features. The amount is shown before payment. Each new export is charged separately; generated files can be downloaded again from the current page.