PDF editing guide
Edit a PDF online without installing software
A PDF is useful because its layout stays consistent across devices, but that fixed layout can make small changes inconvenient. The ToolsFA editor is designed for practical updates such as completing a form, placing a signature, adding a note, inserting a logo or photo, and marking up a document for review. It works directly in a modern browser, so there is no desktop program to install and no account setup before you begin.
Add text and make visible corrections
Choose Add text, click the page, and type inside the text box. Arial is selected by default, and you can choose a different font, size and colour before placing another box. To replace wording already on the page, choose Edit existing text and click a highlighted text region. The tool creates an editable visual replacement that you can move and resize. It does not rewrite or securely remove the original PDF text layer.
Draw, sign and erase added strokes
The Draw tool is useful for notes, arrows and freehand marks. Sign uses a thicker, smoother stroke for a handwritten signature. Both work with a mouse, trackpad, touchscreen or stylus. If a stroke is not right, drag the Stroke eraser across it, press Delete after selecting it, or use Undo. Redo restores a change that was undone.
Insert pictures, shapes and lines
Add a PNG or JPEG when a document needs a logo, stamp, photograph or scanned signature. Rectangle, Circle and Line tools can highlight an area or organize a simple markup. After adding an object, switch to Select, click it, and drag the handles. Images and shapes can be stretched horizontally or vertically when you need a different size or aspect ratio.
Find text already stored in the PDF
The Detected text panel reads the selectable text layer on the current page and lets you copy it. This is helpful when you need wording from a document without retyping it. Image-only scans may not return text because text detection is different from OCR. The original page still remains visible and can be annotated normally.
Privacy, browser support and file safety
Your selected PDF and added images are processed in the browser on your device; they are not uploaded to ToolsFA. Keep the original document until you have opened and reviewed the downloaded copy. Very large or complex PDFs can use substantial device memory, particularly on older phones. Password-protected, damaged or unsupported files may not open.