# Annotate PDF Documents

> Add highlights, notes, shapes, and text annotations to PDF documents with an easy editor.

Live tool: https://lofttools.com/tools/pdf-tools/annotate-pdf

Category: PDF & Documents

## How it works

1. **Select PDF** — Drop a PDF to mark up, or click to choose one from your device
2. **Add annotations** — Use highlight, text, shapes, and sticky note tools to annotate
3. **Download** — Download your annotated PDF instantly

## FAQ

### What annotation tools are available?

Highlight, underline, strikethrough, sticky notes, text boxes, freehand drawing, arrows, and shapes.

### Does this preserve bookmarks and form fields?

Yes. Existing bookmarks, form fields, and other annotations remain intact; new highlights and notes are appended as a separate annotation layer.

### What PDF versions are supported?

Reads PDF 1.0 through 2.0. Output is written as PDF 1.7 (the version that introduced the modern annotation dictionary).

## Privacy — what we do not do

This tool runs entirely in the browser via WebAssembly. Your file never reaches a Loft Tools server. Specifically:

- **No upload.** The file bytes load into the browser tab's memory and process on your own CPU. Open DevTools → Network and observe zero outbound requests carrying file data while Annotate PDF Documents runs.
- **No AI training on your file.** Loft does not train models. We could not train on a file we cannot see.
- **No content scanning.** No virus, copyright, or content-moderation pass against your file. The bytes are not accessible to us.
- **No server-side log of file contents, filenames, or EXIF metadata.** Cloudflare edge captures URL and truncated IP for abuse defense (standard CDN behaviour). Cloudflare Web Analytics records anonymous page hits, no cookies, no PII. Nothing about your file content reaches any log.
- **No retention.** Close the tab and the file leaves browser memory. No backups exist on our side because no copy ever existed on our side.
- **No account.** No email, no signup, no auth, no telemetry tied to you.
- **Offline-capable after first visit** (PWA). Once you've loaded a tool, it caches; later sessions work without internet. For high-sensitivity files, run the tool once online to warm the cache, then disconnect before processing.

Compare with upload-based services: each transmits your file to a processing server. Even over HTTPS, each has logs, retention windows, and subpoena exposure. Loft has none of these because the server architecture does not include your file.

## More

- All tools: https://lofttools.com/tools
- Category: https://lofttools.com/tools/pdf-tools
- LLM index: https://lofttools.com/llms.txt