PDF tools · Free browser tool
Edit and Annotate a PDF Locally
Add text notes, highlights, shapes, and freehand marks to an unsigned PDF locally, review every addition, and download a clearly identified modified copy.
Phone and computer friendly
No document upload
Free to use
Private workspace
Make honest document annotations with high-fidelity page previews, explicit signature warnings, and a before-download change receipt.
Tab memory only
New output file
Review before sharing
Your file is processed by code already loaded in this tab. Your device, browser, extensions, downloads, and any later sharing remain part of the trust boundary.
Ready. Choose a file to begin.
Choose a file to begin
Make honest document annotations with high-fidelity page previews, explicit signature warnings, and a before-download change receipt.
Created on this device
Result ready
Open the output and review every important page before replacing or sharing a file.
What this tool does
A focused PDF job, with a visible boundary.
Make honest document annotations with high-fidelity page previews, explicit signature warnings, and a before-download change receipt.
Page-by-page change review
Original and output SHA-256 receipt
Know the limits
Local does not mean unlimited.
Browser processing avoids an upload workflow, but available memory, PDF structure, digital signatures, and the settings you select still matter.
- This editor adds visible annotations and does not rewrite hidden glyph codes or promise to evade forensic review.
- Signed documents are read-only because edits invalidate their authenticity assurance.
- Annotations do not prove the truth, authorship, or authority of document content.
Four local steps
How to use pdf editor.
- 01
Choose an unsigned PDF and review the signature status.
- 02
Add notes, highlights, shapes, or freehand marks to the intended pages.
- 03
Review the complete change list and modified-page preview.
- 04
Download the clearly named modified copy and its hash receipt.
Clear answers
PDF editor questions.
Can edits evade forensic review?
No. The tool deliberately creates a modified derivative, records affected pages, and never promises preserved authenticity.
Can I edit a digitally signed PDF?
Signed files open read-only. Preserve the signed original and obtain a new valid signature after any legitimate revision.
Does this replace existing text?
No. The public editor adds visible annotations and page content; it does not surgically rewrite existing glyph codes.