Lumina PDF Studio is a full PDF editor, scanner, converter, and more that runs entirely offline on your phone.

Open a PDF, tap a paragraph, and retype it. The words change in place, in the
document's own font, with the layout where it was. Then sign it, redact it,
fill the form, convert it, or lock it in an encrypted vault.

All of it happens on your phone. No account, no upload, no sync, no cloud.
Contracts, payslips, medical letters and bank statements are exactly what
people get asked to hand to a website. This app never asks.

EDIT REAL TEXT
• Tap any paragraph and retype it. The document's embedded fonts are extracted
and reused, so an edit matches the page instead of standing out.
• Bold, italic, size, color, alignment and letter spacing, per character.
• Move, resize, rotate and swap images.
• Find and replace across the whole document.
• Edit a file you already edited. Open it again tomorrow and change it again.

ANNOTATE AND SIGN
• Highlight, underline, strike out, box and note. These are saved as real PDF
annotations, so any reader can list them and you can remove them later.
• A Comments pane that lists every mark and jumps to it.
• Draw freehand, add shapes and arrows, drop ticks and crosses.
• Sign with your finger, save the signature, reuse it. Initials too.
• Attach a hyperlink to any text or image.

FORMS
• Fill Form fields inline and save them back, still fillable.
• Tap anywhere to add a field to a form that never had one.
• Suggestions drawn from what you have typed before.

PAGES
• Reorder, rotate, duplicate and delete pages by dragging.
• Merge, split, extract, crop and compress.
• Page numbers, headers and footers, watermarks, metadata.

CONVERT
• PDF to Word, Excel and PowerPoint.
• PDF to and from images. Text and Markdown to PDF.
• PDF/A for archives, portals and courts.

SCAN AND READ
• Scan paper with the camera and get a clean, deskewed PDF.
• OCR turns a scan into searchable text, and tells you how confident it is
instead of pretending.
• Pull every image out of a document.

PROTECT
• Real redaction. The content is removed from the file, not covered with a
black rectangle that anyone can drag away.
• Owner passwords and permission flags. Unlock files you have the password for.
• Sign with your own certificate.
• A Private Vault with a PIN and on-device encryption, plus an optional app
lock with fingerprint or face unlock.

BUILT FOR YOUR PHONE
• Follows your system light and dark theme.
• Nine languages: English, Arabic, French, German, Italian, Spanish, Turkish,
Chinese and Japanese.
• No ads. No subscription. No account.

WHAT IS FREE
Reading, editing text, annotating, drawing, merging, splitting, rotating,
cropping, compressing and the Private Vault. No limits, no trial period, no
countdown. Documents you save after editing carry one small line in the corner
that says they were made with Lumina.

One payment removes that line for good and unlocks OCR, redaction, find and
replace, form filling, Word and Excel export, batch processing, certificate
signing, PDF/A and password protection. Buy it once and it stays bought.

Worth saying plainly: the app downloads font files, and language models if you use OCR translation. That is the only network traffic it makes, it is a
one time download rather than an upload, and your documents are never part of it.