Fill and Sign PDF Online — Free PDF Form Filler & Signature Tool

Yes. Electronic signatures are legally valid in most countries under the ESIGN Act (US), eIDAS regulation (EU), and equivalent laws worldwide. They indicate intent to sign. For high-stakes or regulated documents, consult a legal advisor.

No. All processing happens 100% in your browser using JavaScript (pdf-lib and pdfjs-dist). Your PDF and signature never leave your device — nothing is uploaded, stored, or transmitted.

Yes. When you upload a PDF with interactive AcroForm fields (text boxes, checkboxes, radio buttons, dropdowns), they are automatically detected and highlighted in blue so you can fill them directly.

Yes. Even if a PDF has no form fields, you can click anywhere to add text, signatures, dates, checkmarks, cross marks, dots, and images as overlays. It works on any PDF.

Four ways: (1) Type your name and choose from 5 handwriting fonts, (2) Draw with your mouse, trackpad, or finger on touch screens, (3) Upload an image — background is automatically removed with 2 transparency options, (4) Capture with your camera.

Yes. Signatures and initials are saved separately in your browser's local storage for instant reuse across sessions. They're never stored on any server. You can drag saved signatures from the sidebar directly onto the PDF.

The whiteout tool places a resizable white rectangle over content you want to hide. Use it to cover sensitive information, old dates, or mistakes before signing and sharing the document.

Four formats: MM/DD/YYYY (US), DD/MM/YYYY (UK/EU), YYYY-MM-DD (ISO), and DD.MM.YYYY (German/Swiss). Select your preferred format, then click to stamp today's date anywhere on the PDF.

Yes. The Initials tool is separate from the Signature tool with its own saved list and smaller dimensions. Create initials by typing, drawing, uploading, or using camera — just like signatures.

Yes. The tool is fully responsive with touch-friendly signature drawing, a mobile sidebar toggle, and optimized controls. Works in Safari (iOS), Chrome (Android), and all modern mobile browsers.

Yes. The Image Stamp tool lets you place any PNG, JPEG, or WebP image anywhere on the PDF. Drag to reposition, resize from corners. Ideal for company logos, stamps, or photos.

No. Form data is flattened into the PDF content on download — the filled text becomes part of the page, and form fields are removed. Recipients cannot modify your responses.

WhiskFile requires no account, processes 100% in your browser (Adobe uploads to their servers), offers 4 signature methods including camera capture (Adobe has 3), includes whiteout and image stamps (Adobe doesn't), has 4 date formats (Adobe has 1), and saves initials separately. Everything is free with no limits — Adobe charges for multi-signer workflows and audit trails.

Yes. Fill and Sign PDF on WhiskFile is completely free with no account required. Free users get 7 tasks per day with files up to 50 MB. There are no watermarks on any plan. Pro plans ($4.99/month) unlock unlimited tasks, 500 MB files, batch processing, and API access.

Yes. Fill and Sign PDF runs entirely in your browser using WebAssembly. Your files are never uploaded to any server — they stay on your device throughout the entire process. No data is transmitted, stored, or accessible to WhiskFile or any third party.

Fill and Sign PDF accepts PDF files as input and produces PDF output. The maximum file size is 50 MB on the free plan (500 MB for Pro users). There are no page count limits.