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Local File Tools · runs locally

Add a Visible Signature to PDF

Place a typed visible signature mark on one page of a local PDF; this is not a cryptographic digital signature or certificate and the file is never uploaded.

Ready. Your working data stays in this browser.

Files and capture streams stay on this device. Processing uses browser APIs only; nothing is uploaded to YTSave, the media API or a proxy.

Why this tool is useful

Add an explicit approval label, typed name or review mark to a PDF when certificate-based signing is not required.

How it works

Pinned pdf-lib embeds a standard local font, measures the bounded label and draws it with an underline at the chosen page corner before saving a new PDF.

Practical example

Type a short Latin-script name, choose page 2 and bottom right, then download the visually marked copy while retaining the original unchanged.

Validation

The calculation is deterministic and explains validation errors instead of silently changing invalid input.

Privacy boundary

Input and output remain in this tab. Copy and download happen through browser APIs without a server upload.

Result passport

Every run reports its tool mode, timestamp and input/output size so transformed data can be audited.