How to edit a PDF (add text, highlights and shapes) on Mac
You don't need special software to edit a PDF (add text, highlights and shapes) on Mac. FernPDF runs entirely in Safari or Chrome on macOS: open the tool, drop your file, download the result. The whole editor runs in your browser: rendering, editing and saving all happen on your device.
There's nothing to install: no Preview workarounds, no App Store downloads, no Rosetta questions. If your Mac runs a modern browser, it runs FernPDF, on Apple Silicon or Intel.
Step by step
1Open the Edit PDF tool.
2Drop the PDF you want to change.
3Add text boxes, highlights, shapes, images or whiteout, or switch to Edit text mode to rewrite existing lines.
4Click Save and download. Edits are baked into the file.
No upload · no account · no watermark
FAQ
Common questions
Yes, FernPDF is a web app, so it runs in Safari or Chrome on macOS with no installation. All processing happens on your device using WebAssembly.
Yes. Every core FernPDF tool is free, with no account, no watermark, and no trial limits.
Yes. The page is rendered with WebAssembly, your annotations are drawn locally, and the edited PDF is assembled on your device. Nothing is uploaded.
Switch to Edit text mode and click any outlined text block. FernPDF paints out the original line and redraws your replacement in a matching size when you save.