B BLUESKY LABS

Office & PDF Suite

How to Use PDF Sign & Fill: Add Signatures and Text Locally

Add text, checkmarks, and handwritten signatures to PDFs locally in your browser. No upload, no account, no server storage.

Updated 2026-06-07. Bluesky Labs tools are designed for browser-local workflows whenever the tool supports local processing.

When to Use This Tool

  • Adding a personal handwritten signature to a contract or lease agreement.
  • Filling out government forms by adding text fields and checkboxes.
  • Annotating PDF documents with specific notes without uploading files to a server.

Step-by-Step Workflow

  1. Open the tool

    Navigate to the PDF Sign & Fill tool on the Bluesky Labs website.

  2. Load your file

    Click the upload button to select your PDF file from your local device storage.

  3. Enter inputs

    Select the 'Text' or 'Checkmark' tool to input specific information into form fields.

  4. Choose settings

    Choose the signature option to draw or place your handwritten signature on the document.

  5. Save the output

    Download the completed and signed PDF directly back to your computer.

Best Practices

  • Ensure your PDF file is not password-protected before attempting to edit.
  • Use the 'Text' tool for clear, legible information instead of handwriting small details.
  • Double-check all filled fields for accuracy before downloading the final version.
  • Take advantage of local processing by knowing your data never leaves your browser.

FAQ

Is my personal data safe when using this tool?

Yes, because all processing happens locally in your browser; no files are uploaded to a server or stored online.

Can I add both text and signatures to the same document?

Yes, the tool allows you to combine text inputs, checkmarks, and handwritten signatures on a single PDF.