Edit a PDF — add text, images, shapes, and blackout regions, in your browser

How to edit a PDF online for free

The PDF editor opens any PDF in this browser tab and gives you a canvas for every page. Pick a tool from the right rail (text, image, rectangle, line, ellipse, or blackout), place or drag on the page, and the change appears immediately. Drag the page thumbnails in the left rail to reorder pages. When you are done, click Save edited PDF at the top and the result downloads as edited.pdf with every edit burned into the file.

Add text on top of any page

Pick the text tool, click anywhere on a page, and start typing. The right rail exposes font (Helvetica, Times, Courier), size, and color. Hit Esc or click somewhere empty to finish editing. Position the text by dragging it with the select tool; resize it by clicking once and dragging the corner handle. The text becomes a regular text string in the output PDF — copyable, selectable, and indexed, just like text you typed in Word.

Insert images (logos, signatures, photos)

Pick the image tool and click on the page. A file picker opens; choose an image (PNG, JPG, WebP). The image is dropped at that position and you can drag it to refine placement or resize it from a corner. Once saved into the output PDF, the embedded image is a real XObject — same fidelity and resolution as the original file. This is the right way to add a logo to every page of a report, drop a signature onto a contract, or paste a screenshot into a slide deck exported as PDF.

Draw shapes, arrows, callouts

Pick rectangle, line, or ellipse and drag on the page. The right rail controls color and stroke width. Rectangles work well for banners, callouts, and forms; lines and arrows are great for marking up proofreading passes or pointing to a specific line of text. Every shape is a vector object in the output — sharp at any zoom level, no PNG-style blur when the PDF is opened on a high-resolution screen.

Blackout regions to redact them

Pick the blackout tool, drag over the text or area you want to remove, and an opaque black rectangle covers it. When you click Save edited PDF, the blackout is drawn on top of the underlying content, just like every browser-based redactor does. For everyday redaction — hiding an account number on a printed statement, censoring a name in a published document, redacting a price in a quote — this is the right tool. For high-stakes redaction (legal filings, medical records) you should run the saved file through a desktop tool that explicitly strips the underlying text layer.

Reorder pages

The left rail shows a thumbnail of every page. Drag any thumbnail up or down to move the corresponding page. The thumbnails update in real time and the order you see is exactly the order written into the saved PDF. This is the fastest way to fix the page order of a multi-chapter PDF that came out of a scanner in the wrong sequence.

Undo and redo

Every action — adding text, dropping an image, drawing a shape, blackout, page reorder — pushes a single undo entry onto a stack capped at 30. Press the Undo button, click Redo to bring the change back. Undo history is per-PDF-load and clears when you load a new file or click Clear.

Why edit a PDF in the browser instead of uploading it?

Most online PDF editors work by uploading your file to a remote server, processing it, and sending you back a result. That is fine for a non-sensitive document but the wrong choice for anything private — contracts, medical paperwork, financial statements, drafts you have not published, internal memos, anything covered by NDA. RasonaX PDF Toolkit runs entirely in your browser tab. The file is read into your device's memory, every edit is applied locally by pdf-lib, and the saved PDF is handed straight to your downloads. Nothing is transmitted to any server at any point.

What gets written into the saved PDF

When you click Save, the editor rebuilds the PDF page by page: every page from the original (with the same dimensions, fonts, and resources) becomes a new page in the output, with your overlays drawn on top using pdf-lib's primitive drawing API (drawText, drawImage, drawRectangle, drawLine). The output PDF is not a screenshot of the editor canvas — it is a real PDF with vector objects and embedded fonts. Text in the output is selectable and copyable; images are full-resolution; shapes are crisp at any zoom.

Pair the editor with the rest of RasonaX PDF Toolkit

You may also want to merge several edited PDFs into one, split out only the pages you edited to send individually, compress the result if the saved file got a bit too large, rotate pages that came in sideways before placing text, or extract images you have already placed in a document for use elsewhere. All eight RasonaX PDF Toolkit tools share the same in-browser pipeline, so you can move between them without re-uploading anything.