Windows 10 and 11

Open anything.

Leaf Viewer opens more than 1,600 kinds of file in one app, each shown as it was meant to look.

Get it from Microsoft StoreFor Windows 10 and 11US$11.99 · free until 31 October

A Word report open in Leaf as two pages side by side, with its headings in the sidebar.

DocumentsWord files as their pages, two side by side.More about documents

A film of the Earth from the space station, playing.

FilmsWith subtitles, old formats included.More about films

A song playing, its words lit line by line.

MusicCommon and rare formats, with lyrics line by line.More about music

A photograph of the aurora from orbit, fitted to the window.

PhotosFit, zoom and turn, at full size.More about photos

Pride and Prejudice open as a book, two pages side by side.

BooksOne page or two, turned with a key.More about books

A ZIP archive listing every file inside it.

ArchivesLook inside without unpacking.More about archives

A 3D model of a lantern, shaded, with its parts in the sidebar.

3DTurn a model round and pick out its parts.More about 3D models

A map of Venice drawn from OpenStreetMap data.

MapsRoutes, places and towns, drawn from their data.More about maps

Plays what others won’t

Old films, rare sound formats and game music, with nothing extra to install.

A viewer, not an editor

Leaf never writes to a file. Edit in your usual app, and Leaf updates when you save.

Opens in a moment

A download of about 10 MB that opens a file in well under a second.

Part of Windows

Follows your light or dark setting, with Mica on Windows 11.

What it opens

Whatever turns up on your PC.

New files and forty-year-old ones. Click a picture to see it full size.

A Word report as two pages side by side.

Documents

Laid out as their pages, as their own programs lay them out.

Word (.docx, .doc), Apple Pages, OpenDocument, Rich Text, WordPerfect, Works, ClarisWorks and AppleWorks, MacWrite, WriteNow, Nisus, Hangul

An Excel workbook with its sheets in the sidebar.

Spreadsheets

Every sheet, with its number formats and charts.

Excel (.xlsx, .xls), OpenDocument, CSV, Lotus 1-2-3, Quattro Pro, Gnumeric

Presentations

Slides as designed, and shown full screen.

PowerPoint (.pptx, .ppt), Keynote, OpenDocument

PDFs

Selectable text, working links, bookmarks, and forms as filled in.

PDF, XPS, PostScript

A film of the Earth from orbit, playing.

Films

With subtitles, including old formats other players dropped.

MP4, MKV, WebM, AVI, WMV, MOV, DVD .vob, Flash, DivX and Xvid, RealVideo

A song playing with its lyrics lit line by line.

Music and sound

Common and rare formats, with lyrics line by line.

MP3, FLAC, AAC, WAV, Ogg, WMA, Apple Lossless, Monkey’s Audio, DSD, DTS, MIDI

A photograph of the aurora from the space station.

Photos and pictures

Fit, zoom and turn, at full size. Animations play.

JPEG, PNG, HEIC, WebP, JPEG XL, camera raw, Photoshop, GIMP, TIFF, HDR, icons

Books and comics

One page or two, turned with a key.

EPUB, Kindle, FictionBook, comic archives, DjVu, help files

Archives and disk images

Open each file inside without unpacking.

ZIP, 7-Zip, RAR, TAR, CAB, ISO, VHD, DMG

3D models

Turn a model round and pick out its parts.

glTF, STL, OBJ, FBX, 3MF, STEP, IFC, USD, Blender and SketchUp previews

Drawings and plans

Drawn from their own lines, layers and text.

AutoCAD DWG and DXF, MicroStation, Gerber and KiCad boards, Visio, draw.io

A map of Venice from OpenStreetMap data.

Maps and journeys

Routes, places and towns, drawn from their data.

GPX, KML, GeoJSON, shapefiles, OpenStreetMap, terrain, watch and flight logs

Email

Messages as your mail program shows them, with attachments.

EML, Outlook .msg and .pst, mbox, Outlook Express, winmail.dat, contacts and calendars

Sheet music and chip tunes

Scores played from their notes, and music from old games.

MusicXML, MuseScore, ABC, MIDI, karaoke, tracker modules, SID, NES and SNES music

Notes and papers

Maths typeset, and notebooks as written.

Markdown, LaTeX, LyX, Jupyter, Mathematica, Maple, Org, reStructuredText

Code and text

Coloured, with line numbers. Any other text opens as text.

60 languages, including Python, JavaScript, C and C++, Java, Rust and SQL; JSON, YAML and logs

Databases and data

Tables and rows, without the program that made them.

SQLite, Access, dBase, Paradox, Parquet, HDF5, netCDF, MATLAB, R, SAS, SPSS, Stata

A caffeine molecule in balls and sticks.

Science and medicine

Molecules in 3D, medical scans, genomes and spectra.

PDB, SDF, CIF, DICOM, NIfTI, FASTA, VCF, BAM, microscopy and telescope images

Fonts

A specimen at every size, before you install it.

TrueType, OpenType, WOFF, Type 1, Windows, Mac and bitmap fonts

Old computers and games

Pictures, disks, tapes and music from 1980s and 1990s machines.

Amiga, Commodore 64, ZX Spectrum, Atari ST, Apple II, BBC Micro, Doom WADs, cartridges

Diagrams and artwork

Drawn from their own shapes, not a preview.

SVG, Illustrator, PostScript and EPS, Visio, draw.io, Excalidraw, mind maps, family trees, metafiles

Windows’ own files

What a file is and what it holds, without running it.

Certificates and keys, crash dumps, event logs, registry hives, shortcuts, installers, network captures, programs’ headers

And many more. If a file you need doesn’t open, tell us.

A film playing in Leaf in a dark window.

However you like to look.

Pages fitted to the window, one whole page, or two side by side.
Films and music with subtitles, lyrics, soundtracks and speed.
Full screen with F11, or F for a film, picture or model.
Print, or save as a PDF.
Locked files open with their password.

US$11.99, free until 31 October.

Get it while it’s free and it stays free for you, updates included.

Get it from Microsoft StoreFor Windows 10 and 11

Windows 10 or 11: Windows 10 version 1809 or later, or Windows 11.
Microsoft Store: Installs Leaf and keeps it up to date.

Help · Support