How It Works Under the Hood
pdfjs-dist renders interactive page previews while HTML5 Canvas captures pointer strokes and cleans scanned white backgrounds into transparent PNG overlays embedded natively onto the PDF via pdf-lib.
Step-by-Step Instructions
Upload your PDF contract (or test with the built-in Sample Agreement PDF).
Draw a signature on the pad, upload an image, or click a quick APPROVED / Date stamp.
Place on the active page, adjust X/Y/width sliders precisely, and export your signed PDF.
Key Features & Performance
- Zero Accounts or Daily File Caps: Sign unlimited contracts with zero watermarks
- Auto White-Background Removal: Turns phone photos of ink-on-paper signatures into crisp transparent PNGs
- Built-in Rubber Stamps & Date: Quick APPROVED, CONFIDENTIAL, PAID, VERIFIED & custom colored stamps
- Preserves Original Vector Text: Modifies only the placed signature/stamp layers via pdf-lib
Local Browser Processing & Privacy
Traditional web converters upload your documents, snippets, or media files to remote servers. Local PDF Signer & Stamp Tool runs inside your browser tab:
Your input text and files are processed locally without uploading payloads to a processing server.
Microdeck does not log or store the files or inputs you paste into tool workspaces (normal static hosting/CDN requests still load page assets).
Working outputs stay in your browser tab and are released when you reset the tool or close the tab.
Frequently Asked Questions
Does this modify the crispness of text inside my contract?
No. Unlike screenshot-based editors, pdf-lib embeds only your transparent signature overlay while leaving every vector paragraph and font untouched.
Are my contracts stored anywhere?
Never. Both PDF rendering and signature embedding happen locally inside your browser tab.
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