Draw your signature and place it on a PDF page. Processing stays in your browser — documents are not uploaded.
Use mouse or touch to sign below.
Signature is placed at the bottom-right of the selected page. This is a visual signature, not a cryptographic digital certificate.
Add a handwritten-style signature to any PDF without printing. Draw with mouse or touch, choose the page, and download a signed PDF — processed locally in your browser.
PDF Sign / eSign is designed for everyday tasks where speed and simplicity matter. Whether you are handling a single file or working through a batch, ConvertMastery keeps the workflow straightforward with clear settings and instant downloads.
Sign contracts and agreements visually. Add approval signatures to forms. Quickly endorse invoices or letters. These are among the most common reasons users choose this tool on ConvertMastery.
For the best outcome, start with a high-quality source file when possible. If you are preparing images for the web, consider converting to WebP or compressing after conversion. For documents, review the output before deleting originals. When privacy matters, prefer settings that strip metadata and use browser-based processing when available.
ConvertMastery is updated regularly to support modern formats and browsers. If you need help, visit our documentation guide or browse related tools linked below. Processing is private and on-the-fly — results are not saved to our servers.
Input/output: PDF. Signature embedded as an image on the page.
ConvertMastery processes files locally in your browser whenever possible. Your images, documents, and media are not uploaded to our servers for conversion or compression. This privacy-first approach keeps your data on your device and reduces exposure to third parties.
No. This places a visual signature image on the PDF. For certificate-based digital signatures, use a qualified e-sign provider.
No. Signing runs in your browser with pdf-lib.