Add legal-looking cursive signatures, type text, or upload initials. Completely private local browser execution.
or drag and drop PDF here
or drag and drop image file (PNG/JPG)
Sign on a white piece of paper and hold it up to the camera. Click capture to save.
Electronic signing transforms vector document catalogs by overlaying transparent graphics layers or text instructions at precise page coordinates. Using high-performance browser engines, this process can be completed entirely on your local machine, keeping your identity records private.
Most e-sign portals require uploading document binaries to cloud systems. This compromises confidentiality. By loading vectors via local rendering pipelines, your private data remains in active RAM sandbox space, shredded instantly when the browser tab is closed.
Drag and drop your file into the secure, local browser container.
Create a signature via typing, drawing, or uploading, and position it on any page. Double-click to write annotations anywhere.
Click the 'Download Signed PDF' button to compile annotations into a secure output file.
Yes. Document Alter processes all PDF rendering, text placements, and signature image embeddings 100% locally in your browser memory. Your documents are never uploaded to our servers.
Yes. When you check the 'Save signature' option, your signatures are securely saved in your browser's localStorage for future document sessions.
You can type your name in cursive styles, draw using mouse/touchpad, upload an image of your signature, or scan it using your webcam.