Edit PDF
Add text, shapes, images and freehand annotations.
How to Use Edit PDF
- Upload your file: Drag and drop your file into the active processing area above, or click the box to browse your device files.
- Configure settings: Select your preferred options (such as target file size in KB, compression level, page order, or output format).
- Process locally: Click the primary action button. Your file is rendered and encoded in seconds directly inside your browser memory.
- Download output: Click Download to save the modified document back to your device. No watermarks are added.
Zero-Cloud Privacy Guarantee
Unlike legacy web utilities that upload your sensitive documents to remote servers, PDFtiny executes 100% of processing inside your local browser using WebAssembly. Your files never leave your computer, ensuring complete privacy, enterprise compliance, and offline availability.
Technical Specifications
| Parameter | Specification |
|---|---|
| Processing Engine | Client-Side WebAssembly (WASM) & HTML5 File API |
| Server Transmission | 0 Bytes Uploaded (100% Local Browser Memory) |
| Device Compatibility | Chrome, Safari, Firefox, Edge, Android, iOS, Windows, Mac, Linux |
| Compliance | ISO 32000-2:2020, GDPR Article 25 (Privacy by Design) |
Frequently Asked Questions
Can I edit text in my PDF without converting it to Word?
Yes. PDFtiny\
Will edits show up on every device when I share the PDF?
Yes. PDFtiny permanently bakes your text boxes, shapes, highlights, and signature images into the PDF when you click Export. Annotations are embedded in the PDF spec and are visible in all standard PDF viewers (Adobe, Chrome, iOS, Android).
Does PDFtiny upload my PDF to a server when I edit it?
No. Your PDF file never leaves your browser. PDFtiny processes everything locally using JavaScript and WebAssembly. Your document contents are completely private and inaccessible to anyone else.
Can I sign a PDF and fill out form fields in the editor?
Yes. You can draw a freehand signature, type a typed signature, or upload a signature image and position it precisely on the signature line. Interactive AcroForm form fields can also be filled directly in the editor.