GenZOffice logoGenZOffice

Office documents on your phone — privately

A free PDF editor, document viewer and PDF converter for Android. Open PDF, Word, Excel and PowerPoint files, and turn images, Word documents and slides into PDFs — entirely on your device. No uploads. No account. Works offline.

Ppt to pdfFree word to pdf converterImage to pdf converterFree pdf editor appPdf reader appExcel viewerPowerpoint viewer
Get it on Google Play Open the web tools Support development

Or use them in your browser — no app needed

Free tools that run entirely in this page: your file is processed on your own device and never uploaded. See all tools →

Organize a PDFSee every page of a PDF as a thumbnail, then rotate or delete individual pages and save. Free, no upload — it all happens in your browser. Convert Word to PDFTurn a Word .docx document into a PDF, right in your browser. Free, no upload, no sign-up — the file never leaves your device. Convert JPG to PDFTurn JPG or PNG images into a PDF, right in your browser. Combine several into one file. Free, no upload, no sign-up — your images never leave your device. Merge PDF filesCombine several PDFs into one, right in your browser. Free, no upload, no sign-up. Your files never leave your device. Split a PDFSplit a PDF into separate files in your browser. Free, no upload, no sign-up. The file never leaves your device. Compress a PDF to 200 KBCompress a PDF to 200 KB free in your browser. No upload, no sign-up, no watermark. The document never leaves your device.

What it does

Read every format

PDF, .docx/.doc, .xlsx/.xls/.csv and .pptx/.ppt open in a clean, fast viewer.

Image to PDF

Pick one photo or many and combine them into a single PDF, each page auto-oriented to the image.

Word to PDF

Convert a .docx document — text, images, lists and tables — to PDF without leaving your phone.

PowerPoint to PDF

Turn .pptx slides into PDF pages at full slide size, one page per slide.

Edit PDFs

Zoom to 4×, night mode, rotate and delete pages, then save back to your device.

Find & replace in Word

Search and replace text in .docx files while preserving the original formatting.

Excel with formulas

Edit cells and use SUM, AVERAGE, COUNT, IF and VLOOKUP. Export to CSV.

Lock files down

AES-256 encryption with PBKDF2-SHA512, unlocked by fingerprint or Face ID.

Guides for each task

Convert PPT to PDF on your phone, freeConvert PowerPoint PPTX slides to PDF directly on your Android phone. Free, no upload, no sign-up, works offline. One PDF page per slide, full size. Free Word to PDF converter that works offlineConvert Word DOCX documents to PDF on your Android phone for free. Keeps headings, lists, tables and images. No upload, no account, works offline. Turn photos into a PDF, right on your phoneFree image to PDF converter for Android. Combine multiple JPG or PNG photos into a single PDF, on your device. No upload, no sign-up, works offline. A free PDF editor app that keeps your files privateFree PDF editor for Android: rotate and delete pages, read in night mode, zoom to 4x, and password-protect files. On-device, no watermark, no account. A PDF reader app that opens files instantlyFree PDF reader for Android with night mode, 4x zoom, page jumps and search. Opens Word, Excel and PowerPoint too. No account, no upload, works offline. Open and edit Excel files on your phoneFree Excel viewer for Android. Open XLSX, XLS and CSV files, edit cells, use SUM, AVERAGE, COUNT, IF and VLOOKUP, and export to CSV. Works offline. Open PowerPoint files on your phone, freeFree PowerPoint viewer for Android. Open PPTX presentations, view every slide, and convert the deck to PDF on your device. No account, works offline.

Your documents never leave your phone

Most "free online PDF converters" upload your file to someone else's server. GenZOffice does not have a server to upload to. Every conversion runs in the app itself, which is why it still works in aeroplane mode — and why we cannot read your documents even if we wanted to.

Questions

Is it really free?
Yes — every feature, no subscription. Voluntary donations pay for it, and there are no ads.
Do you upload my files?
No. Viewing, editing and conversion all happen on your device.
Does it work without internet?
Yes. Everything runs on your device, so every feature works with no connection at all.
Is there an iPhone version?
Not yet. Android first; iOS and desktop are planned.