PDF Editor Pro — a complete PDF editor that never leaves your browser
PDF Editor Pro is a full-featured editing workstation for PDF files — built to run entirely on the client side. There's no upload step, no waiting for a server to process your document, and no account required. Open a file, edit it, and download the result, all without your document ever touching a server.
What you can do
- Annotate & draw — add text boxes, highlights, underlines, strikeouts, sticky notes, callouts and freehand drawing.
- Sign documents — draw, type or upload a signature and place it anywhere on the page.
- Organize pages — reorder, rotate, duplicate, delete or insert blank pages.
- Add watermarks & stamps — text or image watermarks with custom opacity, rotation and page range.
- Headers, footers & page numbers — with placeholders for page count, date and filename.
- Redact sensitive content and flatten the document before sharing.
- Run OCR on scanned pages to pull out searchable text.
- Batch process multiple PDFs with the same operation in one pass.
Why it's private by design
Every operation — rendering, editing and saving — happens using PDF.js, PDF-lib and Fabric.js running directly in your browser tab. Your file is read into memory locally and the edited copy is generated the same way, so nothing is ever transmitted anywhere.
Is PDF Editor Pro really free?
Yes. Every editing feature on this page is free with no account or signup. CSSMitra's optional premium plan only covers cross-device sync for notes and workspace data — never the tools themselves.
Can it edit scanned PDFs?
Yes — use the built-in OCR feature first to make scanned text recognizable, then annotate or edit as usual. For pure text extraction from scans, the dedicated OCR Reader tool also works well.
Will my PDF's formatting stay intact?
Page layout, images and existing text are preserved exactly as they are — edits are layered on top rather than re-flowing the original content.
Using this in a Central Government office
This is the tool for the finishing work a document needs before it goes on file or out of the division — page numbers, a draft watermark, a signature, or removing something that should not be circulated.
Where this comes up
- Page numbering a bundle — most formal submissions expect continuous pagination across the covering letter and all annexures, which a merge alone does not produce.
- Marking a document DRAFT before it is circulated for comments, so an unapproved version cannot be mistaken for a final one.
- Signing a document that has to go out the same day, without printing and rescanning it.
- Redacting before wider circulation — names, contact details or figures that should not travel beyond the originating division.
Redaction: read this before you rely on it
Drawing a black box over text hides it visually but does not always remove the underlying text from the file, which means it can still be selected or recovered. If you are redacting anything genuinely sensitive, use the flatten option after redacting, and then verify by opening the exported file and attempting to select the text under the box. For material where disclosure would be a real problem, the safest route remains redacting a printed copy and rescanning it.
Watermarks and stamps
Keep the opacity high enough to be unmistakable and low enough that the text underneath stays readable. A DRAFT watermark that cannot be seen defeats its purpose; one that obscures the text defeats the document.