PlainTxtOffice

Open PDF

A lightweight PDF viewer for Windows. Free and open source.

Download

Download portable version for Windows (.exe) — v1.0.0 · 47 MB

SHA-256: 529681edc3656f82caeea59607d61feaa692a9a3d0aaf8fe08d38cfffe05908f

Permanent link to the newest release: open_pdf_portable.exe (latest). This always resolves to the most recent version, so the checksum above may not match it after a new release.

Release notes

v1.0.0 — 15 September 2026

First public release.

Reading

  • Open PDFs from disk or the command line, with several documents in tabs you can drag to reorder
  • Continuous scrolling through the whole document, or a single-page view with Up / Down page steps
  • Navigate by page number, the thumbnails pane, the bookmarks pane, or by clicking links inside the PDF
  • Zoom with Actual Size, Fit Width, Fit Page, or Ctrl + mouse wheel centered on the pointer
  • Full-document text search that updates as you type, with jump-between-matches (Ctrl+F)
  • Copy selectable text from the extracted text pane or directly from the page
  • Remembers passwords for encrypted PDFs, stored protected on Windows

Editing

  • Edit PDF mode: drag out a page region, then Remove Content to redact it or Replace Text to rewrite the text it covers
  • Insert a blank page before or after the current page, sized to match its neighbour
  • Reorder pages from the thumbnails pane, or rotate and delete a page from its context menu
  • Add bookmarks from selected text, then rename or delete them
  • Edit PDF Info Dictionary fields and raw XMP metadata
  • Write plain-text notes that are stored as notes.txt inside the PDF itself, so they travel with the file
  • Optional Tesseract OCR for one page or the whole document, cached per file so results survive reopening

Files

  • Save in place, Save As a copy, or Rename File to move the document to a new name
  • Print all pages, the current page, or a page range
  • The portable build keeps its settings, logs, and caches in an Open PDF Data folder beside the program, so running it from a USB drive leaves nothing behind on the host machine

Known limitations in this release

  • Ctrl+F and Ctrl+W are the only bound keyboard shortcuts. Page stepping, zoom, and back/forward history exist as actions without key bindings.
  • OCR stays unavailable unless Tesseract is installed on your system.

Notes

Open PDF is not code-signed, so Windows SmartScreen may warn on first run. Click “More info” → “Run anyway”. You can verify the file by comparing its SHA-256 hash with the one above. Source code for this release is available on the Source Code page.