MELLON · PALLADIUM
Palladium is MELLON's family of document apps. Open, mark up, edit and organise PDFs. Everything is processed on your device and nothing is uploaded.
Free test version · macOS 11 or later · Apple silicon & Intel
The Palladium series, one app at a time.
View, annotate, edit and organise PDFs.
A fast, full-featured PDF app for Mac. Edit the text that is already in a document, fill forms, sign, redact, compress and protect, with an interface in English, 繁體中文 and 简体中文.
Palladium will grow with tools for everyday paperwork. Tell us what you need.
Everything you need to work with a PDF, in one app.
Thumbnails, bookmarks, links, fit width or height, search with highlighted results, and tabs for several files at once.
Highlight, underline, strike through, draw, add shapes, sticky notes and your signature. Move, resize and recolour them afterwards.
Click a paragraph and retype it. It re-wraps like normal text, in English or Chinese. Drag to move it, or click empty space to add text.
Reorder, rotate, delete, insert blank pages, merge other PDFs and extract pages.
Fill text boxes, check boxes and drop-downs. Draw your signature once and reuse it.
Export pages as PNG or JPEG, extract the text, or turn images into a PDF.
Make big files smaller, set an open password and permissions, or remove them.
Permanently remove sensitive content, and print just the pages you choose.
Private by design
Your documents are processed on your own computer and are never uploaded.
Works offline
No account and no internet connection needed to use it.
Three languages
Interface in English, 繁體中文 and 简体中文, and it handles Chinese text in your documents.
Mark up a report, or reorganise its pages with a drag.
Palladium PDF is in free testing. Download it, try it on your own documents, and tell us what to improve.
Requirements
Open the downloaded .dmg and drag Palladium PDF into Applications.
Control-click Palladium PDF, choose Open, then click Open again.
If macOS still blocks it, go to System Settings → Privacy & Security and click Open Anyway.
Test versions are not yet notarised by Apple, which is why macOS asks you to confirm. You only need to do this once.
Palladium Hub Test version coming soon
A small launcher for the series: shows which Palladium apps you have, and offers Download, Open or Update.
No. Palladium PDF runs on your computer and processes files locally. It does not send your documents to a server.
Yes. It is free to download and use while we test. Feedback is welcome at hello@mellongp.com.
The Mac version comes first. A Windows version is planned after the first test version, and mobile versions may follow.
macOS 11 Big Sur or later, on Apple silicon and Intel Macs.
Not yet. A scanned page is a picture, so there is no text to edit. You can still annotate, sign, reorder, redact and compress it.