Sign PDF Free
Sign PDF completely free with ContinuePDF — every feature, every time, with no trial timer and no paywall waiting at the download step. Most "free" PDF sites cap you at a couple of files a day, stamp a watermark on the output, or hide the real sign feature behind a subscription. Here the tool is free because it runs in your browser, so there are no per-file server costs to pass on to you.
Start Sign PDF NowHow to Sign PDF for Free
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Open the tool — no account
Start using Sign PDF immediately. There is no signup wall and no credit card to "verify".
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Sign PDF without limits
Add your PDF and process it. No daily cap, no locked settings, no "upgrade to continue".
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Download a clean file
Save signed PDF with no watermark and no branding added.
What you can do with Sign PDF
Signing adds your actual signature to a PDF — drawn, typed, or uploaded as an image — and places it exactly where the document needs to be signed, so you can return it without printing.
Sign a contract fast
Add your signature to an agreement and send it back the same day, with no scanner or printer needed.
Handle forms remotely
Sign school, medical, or HR forms from home and email the signed copy straight back.
Initial every page
Place your initials on each page of a multi-page contract where that is required.
Reuse a saved signature
Sign recurring paperwork with a consistent, professional-looking signature every time.
What "free" actually means here
A lot of PDF tools advertise a free tier that is really a demo: you can sign one file, then you hit a "buy a plan" screen, or the download arrives with a watermark you have to pay to remove. That is a sales funnel, not a free tool. ContinuePDF's Sign PDF has no such catch — the full feature set is available to everyone at no cost.
It stays sustainably free because of how it is built. Server-side PDF tools pay for CPU and bandwidth every time someone processes a file, so they have to charge. ContinuePDF does the sign work on your device, so our costs don't scale with your usage — which means we can leave it free without limits or watermarks.
Why choose ContinuePDF
No paywall
Every part of Sign PDF is free — nothing is locked behind a plan.
No watermark
signed PDF downloads clean, ready for professional use.
No daily limit
Process as many files as you need, as often as you need.
No card required
No "free trial" that quietly needs payment details.
Pro tip
Draw your signature slowly on a trackpad or touchscreen for a cleaner line, or upload a photo of your ink signature on white paper for the most authentic look. Size it to match the signature line rather than dropping it in oversized.
Frequently asked questions
Is a signature added this way legally valid?
In many places an electronic signature is acceptable for everyday agreements, but requirements vary by country and document type. For high-stakes legal documents, check what your jurisdiction or the other party requires.
Can I place the signature exactly where I want it?
Yes. You position and resize the signature freely, so you can drop it precisely on the signature line and add a date next to it if needed.
Is Sign PDF really free, with no hidden cost?
Yes. There is no paid tier, no trial that expires, and no watermark you have to pay to remove. The full sign feature set is free for everyone because the processing runs on your device rather than on servers we have to pay for.
What's the catch with a free PDF tool?
There isn't one. We may show light ads, but the tool itself is complete and unrestricted. Because your PDF is processed locally, we don't incur per-file costs, so we don't need to gate features behind a subscription.
Is ContinuePDF free to use?
Yes. ContinuePDF and all of its tools, including Sign PDF, are free with no signup required. Because documents are processed in your browser rather than on our servers, we can offer the full feature set at no cost.
Other ways to Sign PDF
Prefer a different device, browser, or setup? Sign PDF works the same everywhere.
Ready to Sign PDF?
Start using our free sign tool now — no signup required.
Open Sign PDF Tool