Step 1: Add the PDF you want to sign
Drop a PDF to signTap to choose a PDF to sign
or click to browseor tap to choose
Add your signature, initials, dates, or fields for someone else to fill in
Large files (over 50 MB) may take longer or run out of browser memory
Step 2: Create your signature
No fields yet. Add your PDF first, then add a Signature field and click the page to place it.
Add your PDF in step 1 above. It appears here so you can place your signature.
About Sign PDF
Adds one or more signature, initial, date, or name fields to a PDF — for your own signature, embedded directly into the document, or for someone else's, left as empty form fields for them to fill in, in any PDF reader or in this same tool.
Enter your name and initials, set up how your signature and initials should look (drawn, typed in a signature-style font, or an image you already have), then add fields to the list: pick a type, who it's for, and which page. Click the page preview to place each field, then generate the PDF. If any fields are marked for someone else, send them the downloaded file (and the Sign PDF link if you like) — their fields are found automatically when they open it here.
Fields you assign to yourself get embedded permanently into the page. Fields marked for the other party are left as empty form fields at that spot. When they open the file in this tool, those fields are found and placed for them automatically, so they get the same signature options (draw, type, or import) you used.
Watch: Sign PDF in Action
- Is this a legally certified digital signature?
- No — this embeds a drawn image of your signature into the page, which is appropriate for most everyday agreements. Documents requiring a certified digital signature with cryptographic verification (some legal and government filings) need a different, more formal signing process.
- How does the other person actually sign their part?
- Fields marked for the other party are a labeled placeholder, not a fillable box — send them both the downloaded file and the Sign PDF link shown on screen. They open the same file here and get the same real signature tools (draw, type, or import) to fill in just their marked spots, then download their own completed copy.
- What's the difference between this and a PDF editor?
- This tool is built specifically around placing signatures — draw, type, or import one, position it, done. A PDF editor is for broader changes to a document's own text or images. If you need to edit content beyond adding a signature, a PDF editor is the more direct tool.
- Can I lock the document so the signature can't be moved or removed after signing?
- Not directly in this tool — once you're done placing all signatures and any edits are final, Flatten PDF converts everything, including signature fields, into permanent, non-editable page content, which is the more direct way to make a signed document tamper-evident against casual editing.
- Is my signature image uploaded anywhere?
- No — whether you draw, type, or import a signature, everything happens entirely in your browser. The signature and the PDF itself are never uploaded to a server; the finished, signed PDF is generated and downloaded locally.
- Can I save my signature to reuse it next time?
- Not automatically between sessions right now — each visit starts fresh. If you have a signature image saved on your device already (a photo of your real signature, for example), importing that same file each time is the closest equivalent to a reusable saved signature.
- What signature methods are available?
- Three: draw it with your mouse, trackpad, or finger on a touchscreen; type your name and have it rendered in a signature-style script font; or import an existing signature image you already have saved.
- Does this work for documents that need multiple people to sign?
- Yes — assign fields to different parties, and each person opens the same file in this tool to fill in just their own marked spots with the same real signing options, rather than a plain unverified text box.
- Do I need to upload a PDF before I can see how this works?
- No — the name, initials, signature setup, and field options are all visible and usable as soon as the page loads. Uploading a PDF is only needed for the last step: placing those fields on the actual document and downloading the signed result.
How to use Sign PDF
Beyond the field-placement workflow described above, it's worth knowing exactly how each signature method works: drawing lets you sign with your mouse, trackpad, or finger on a touchscreen directly on the page; typing renders your name in a signature-style script font as a quick alternative when drawing isn't convenient; and importing lets you upload an existing signature image (a photo of your real pen-and-paper signature, for instance) if you already have one you prefer to reuse across documents rather than redrawing it each time.
When to use it
The clearest use is signing a document yourself without needing to print, physically sign, and re-scan it — a lease, a simple agreement, a form that just needs your signature and today's date. The multi-party field feature is specifically useful for a document that needs signatures from more than one person — assign fields to the other party, send them the file, and they open it in the same tool to fill in their own marked spots with the same real signing options (draw, type, or import) you had, rather than a plain unverified text box.
When not to use it
For a document that legally requires a certified or notarized digital signature with cryptographic identity verification (common in certain legal or government filings), this tool's signature fields are a visual representation of a signature, not a certified digital signature with built-in identity verification — a dedicated certified e-signature service is the right tool when that specific level of legal certification is required. If you need a full audit trail with signer IP addresses, timestamps, and legal e-signature compliance tracking (common in enterprise contract workflows), a dedicated e-signature platform built around that compliance need is a better fit than this tool's straightforward visual signing. If what you actually need is broader editing of the document's own text or images rather than adding a signature specifically, a PDF editor is the more direct tool; once a document's signatures and any other edits are final and shouldn't be changed further, Flatten PDF converts everything (including signature fields) into permanent, non-editable page content.
Tips for best results
If you'll be signing documents regularly, importing a saved signature image once and reusing it is faster than redrawing your signature each time, and produces a more visually consistent result across documents than drawing fresh each time with a mouse or trackpad. When placing fields for another party, add a bit of extra vertical space around each field on the page preview if the document allows it — it makes the eventual signature easier for them to place accurately without overlapping nearby text.
Limitations
Fields marked for another party aren't fillable PDF form fields in the technical sense — they're a clearly labeled placeholder showing exactly where to sign, meant to be filled in by that person opening the same file in this same tool, not a generic PDF form field that any PDF reader can fill. This means the other party needs to use this tool (or be sent back to it) to complete their part, rather than filling it in with any PDF viewer.
Privacy
Signing happens entirely in your browser — your drawn, typed, or imported signature and the PDF itself are never uploaded to a server; the finished, signed PDF is generated locally and downloaded directly from your browser.
Next: Compress PDF
Shrink it down before emailing
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