DocuFix Studio

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Open a PDF or load the sample to start editing.

Sign a PDF online – draw or type your signature

Create a signature with your finger, mouse or keyboard, place it on any page, resize it, and download the signed PDF. No account, no upload.

Private by design: your PDF is processed in your browser and never uploaded.

Watermark removalDetect the watermark colour, then clear it from one page or every page while dark text stays untouched.
Edit text in placeTap a line, retype it, and the font, size, colour and angle are matched for you.
Logo and signatureDraw a box to add or replace a logo, and sign with a drawn or typed signature.
Redact and mark upBlack out sensitive details, highlight, draw boxes, ovals and lines, or write freehand.

How to sign a PDF online

  1. Choose your PDF, then open the Sign tool.
  2. Draw your signature in the box, or switch to Type and pick a handwriting style.
  3. Tap the page to place it, or drag a box to set its size. Move or resize it any time.
  4. Press Export PDF to download the signed document.

One free toolkit for everyday PDF jobs

Remove watermarkDetect and remove grey or coloured watermarks from one page or the whole document.Edit PDF textReplace a line of text and keep the original look, or add new text anywhere.Add or replace logoDraw a box to add a logo, or replace an old one at the same size.Sign PDFDraw or type a signature and place it on any page.Redact PDFBlack out sensitive details and flatten the pages so they cannot be recovered.Merge and organize pagesRotate, delete and reorder pages, or merge in pages from another PDF.

Frequently asked questions

Is a drawn signature legally valid?

Rules for electronic signatures differ by country and by document type. DocuFix places an image of your signature on the page; it does not add a certificate-based digital signature. Check what your contract or authority requires.

Is my signature stored anywhere?

Only if you tick Remember on this device, and then it is kept in your own browser storage. It is never uploaded.

Can I sign on a phone?

Yes. Draw with your finger, then tap the page to place the signature and use the round handle to resize it.

Is DocuFix Studio really free?

Yes. It is free to use, with no sign-up, no watermark added by us and no page limit.

Is my PDF uploaded to a server?

No. Your PDF is opened and edited inside your own browser and is not uploaded anywhere, so confidential documents stay on your device. Only the editing libraries and fonts are downloaded when you first open the page.

Does it work on a phone or tablet?

Yes. The editor is designed for touch screens as well as desktop: pinch to zoom, drag to draw, and install it as an app from your browser menu. It also supports a light and a dark theme.

Can it remove every kind of watermark?

Not always. It works best on watermarks drawn in a consistent colour, such as grey or coloured diagonal text and stamps on a plain background. Watermarks that are part of a photo, or that share the colour of your text, may leave traces and need the Area Patch or Brush tool. Only remove watermarks from documents you own or have permission to edit.