QQudo 도구
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Fill and Sign PDF Online

Add text, dates, checkmarks, initials and signatures to PDF documents directly in your browser—without uploading your file.

🔒Files processed locally

Select or drop a PDF

PDF files only

Your PDF and signature are processed locally in your browser and never uploaded to Qudo servers.

What is PDF Fill and Sign

PDF Fill and Sign lets you add text, dates, checkmarks, initials and signature appearances to PDF documents directly in your browser. No upload, no account, no server processing—your files stay on your device.

How to Fill and Sign a PDF

  1. Select or drag a PDF file into the tool
  2. Use the toolbar to add text, dates or symbols
  3. Click the Signature button to draw, type or upload a signature
  4. Drag elements to position them, resize or rotate as needed
  5. Review all pages before downloading
  6. Click Finish & Download to generate the filled PDF

Signature Methods

  • Handwritten: draw your signature with mouse, touch or stylus
  • Typed: enter your name and choose a handwriting-style font
  • Uploaded: import a PNG or JPG image of your signature
  • Initials: add your initials as text or a small signature

Signature Appearance vs Digital Signature

FeatureSignature AppearanceCertificate Digital Signature
Visual signatureSupportedSupported
Identity certificateNot providedUsually required
Cryptographic verificationNot providedProvided
Qudo toolSupportedNot supported

Legal Validity

Legal validity of electronic signatures varies by country, jurisdiction and document type. Qudo does not verify signer identity or provide certificate-based signatures. Users should confirm acceptance requirements with the document recipient and consult legal professionals for high-risk or formal documents.

Data & Privacy

Your PDF and all signature data are processed entirely in your browser. Nothing is uploaded to Qudo servers. Signatures are not saved by default and all data is cleared when you close the page.

Use Cases

Application forms

Fill out and sign job, school or government applications

Lease agreements

Add signatures to rental contracts and lease documents

Work forms

Complete HR forms, expense reports and approval documents

Quotes & invoices

Sign business quotes, proposals and invoices

Authorization letters

Add signatures to power of attorney and consent forms

Scanned forms

Fill in scanned paper forms that have been converted to PDF

Limitations

This tool adds text, symbols and signature appearances to PDF pages. It does not provide identity verification, certificate-based digital signatures, multi-party signing workflows, or XFA form support. Modifying a PDF may invalidate existing digital signatures. Acceptance depends on the document, recipient and applicable law.

Features

Fully local processing

PDF and signatures never leave your browser

Multiple signature methods

Draw, type or upload your signature

Text and date fields

Add editable text and formatted dates

Symbol tools

Checkmarks, crosses, dots and more

Undo and redo

Up to 50 steps of edit history

Multi-page support

Add elements to any page and copy across pages

No account required

Free to use with no registration

Cross-platform

Works on desktop and mobile browsers

Frequently Asked Questions

How do I fill and sign a PDF?▼
Select a PDF file, use the toolbar to add text, dates, symbols or signatures, position them on the page, then click Finish & Download.
Are PDFs and signatures uploaded to a server?▼
No. All processing happens in your browser. Nothing is uploaded to Qudo servers.
Can I draw a handwritten signature?▼
Yes. Click the Signature button and choose Draw to sign with your mouse, finger or stylus.
Can I type a signature?▼
Yes. Choose Type in the signature dialog, enter your name and select a handwriting-style font.
Can I upload a signature image?▼
Yes. Choose Upload and select a PNG or JPG image of your signature.
Can I add initials?▼
Yes. Click the Initials button and enter your initials to place them on the PDF.
Can I add a date?▼
Yes. Click the Date button, choose a date and format, then place it on the page.
Can I add checkmarks and crosses?▼
Yes. Click the Symbol button and select from checkmark, cross, dot and other symbols.
Can I sign on a mobile phone?▼
Yes. The signature pad supports touch input on mobile devices.
Are signatures saved on the website?▼
No. Signatures are not saved by default and are cleared when you close the page.
What is the difference between a signature appearance and a digital signature?▼
A signature appearance is a visual representation only. A certificate-based digital signature includes cryptographic verification and identity validation, which this tool does not provide.
Does Qudo verify the signer's identity?▼
No. This tool only places a signature appearance on the PDF. It does not verify identity.
Is the signature legally valid?▼
Legal validity depends on the document, recipient requirements and applicable law. Consult a legal professional for formal documents.
Can I invite others to sign?▼
No. This tool is for individual use only. Multi-party signing workflows are not supported.
Can I fill scanned forms?▼
Yes, you can add text and signatures over scanned PDF pages. However, the tool cannot detect or fill existing form fields in scanned documents.
Can I fill existing PDF form fields?▼
The tool detects AcroForm fields but v1 focuses on free-form text and signature placement rather than interactive form filling.
Why are some form fields not recognized?▼
XFA dynamic forms and some complex AcroForm structures may not be fully supported.
Is XFA form supported?▼
XFA forms may not be fully readable. You can still add text and signatures manually.
Will modifying the PDF affect existing digital signatures?▼
Yes. Adding content to a PDF may invalidate existing digital signatures. Keep the original file.
Can I undo or modify a signature?▼
Yes. Use the Undo button or select and delete any element before downloading.
Can I continue editing after downloading?▼
No. Once downloaded, the PDF is final. You can go back to edit before downloading.
Can I add signatures to multiple pages?▼
Yes. Navigate to each page and add signatures, or use Copy to All Pages.
Can I copy the same signature to multiple pages?▼
Yes. Select the signature element and use Copy to All Pages.
Will the PDF quality be reduced?▼
No. The tool preserves the original PDF content and only adds new elements. Text remains searchable.
Can I process password-protected PDFs?▼
Password-protected PDFs cannot be processed. Remove the password first using a PDF reader.

Related Tools

This tool places text, initials and a signature appearance onto a PDF. It does not verify the signer’s identity or provide a certificate-based digital signature or qualified electronic signature. Acceptance depends on the document, recipient and applicable law.