Docs
Edit• 100% Client-Side Engine

Free Online PDF Editor

Interactive PDF editor to add text, drawings, shapes, and annotations.

Edit PDF documents online with a comprehensive suite of powerful markup and document enhancement tools designed for speed, privacy, and precision. KissThePDF allows you to add custom text boxes, insert image overlays, draw geometric shapes (rectangles, circles, arrows, lines), write freehand ink notes, highlight text, strikethrough clauses, and attach sticky comments directly to your PDF pages. Powered by client-side WebAssembly, our editor delivers instantaneous rendering without latency, file size restrictions, daily task quotas, or intrusive watermarks. Unlike cloud-based PDF editors that store your sensitive files on third-party servers, KissThePDF executes all document modifications 100% locally inside your web browser sandbox. Your confidential business contracts, tax forms, personal identification documents, and creative designs remain completely secure on your machine. Compatible across desktop and mobile browsers, KissThePDF gives you the freedom to edit, annotate, and export professional PDFs in seconds without signing up. Experience complete PDF editing freedom with full undo/redo history, layer management, and crystal-clear vector output.

How to Edit a PDF Document Online

1

Upload Your PDF

Drag and drop your PDF document into the online editor canvas.

2

Select an Editing Tool

Choose from Text, Shapes, Pen, Highlighter, Strikethrough, Image, or Sticky Notes from the toolbar.

3

Add Edits to Pages

Click or drag on any page to insert text, markups, or graphical elements, and customize fonts and colors.

4

Save and Download

Click Download PDF to export your newly edited document instantly to your device.

How to Edit PDF Files Online

Is KissThePDF really 100% free with no limits?

Yes. KissThePDF is an open-source (MIT licensed) project. There are no paid tiers, daily usage quotas, file size limits, or watermark insertions.

Can I add new text and customize the font?

Yes. You can place text boxes anywhere on the document, choose font families, adjust font size, change text colors, and align text.

Can I add my signature to PDF documents?

Yes. You can draw a signature freehand, upload a signature image, or type your name using our built-in signature tools.

Are my uploaded PDFs sent to any third-party server?

No. KissThePDF runs entirely in your browser using client-side JavaScript and WebAssembly. Your documents are never uploaded, logged, or shared.

Which operating systems and browsers are supported?

KissThePDF works smoothly on Google Chrome, Apple Safari, Mozilla Firefox, Microsoft Edge, and modern mobile browsers across Windows, macOS, Linux, iOS, and Android.

Frequently Asked Questions

Strikethrough PDFAdd TextDraw on PDFAdd CircleSticky Notes
Need technical specifications or developer guides for this tool?View Edit PDF Specs in Docs →