Supported File Formats

PreviewFile.dev supports 100+ file formats with built-in preview engines for documents, spreadsheets, images, and more.

Overview

PreviewFile.dev provides native in-browser preview for over 100 file formats without requiring file downloads.

To try these previews yourself, open the File Preview Showcase at /en/showcase where you can upload your own files or use sample files and see how they render directly in the browser.

Document Formats

PDF Documents

Preview Engine: PDF.js (Mozilla)

Fully-featured PDF viewer with:

Page navigation and zoom controls
Text selection and search
Print support
Thumbnail sidebar
Mobile-responsive interface

Supported formats:

.pdf - Portable Document Format

Office Documents

Preview Engine: Office Online Viewer (iframe embed)

View Microsoft Office documents directly:

Supported formats:

.docx, .doc - Microsoft Word
.pptx, .ppt - Microsoft PowerPoint
.xlsx, .xls - Microsoft Excel (also see Spreadsheets section)

Spreadsheet Formats

Excel & CSV Files

Preview Engine: x-spreadsheet + xlsx.js

Interactive spreadsheet viewer with:

Multiple sheet tabs
Cell formatting preservation
Formula display
Sort and filter capabilities
Export to CSV/Excel

Supported formats:

.xlsx, .xls - Microsoft Excel
.csv - Comma-Separated Values
.tsv - Tab-Separated Values
.ods - OpenDocument Spreadsheet

Advanced Excel Features: LuckyExcel for complex Excel workbooks with:

Rich formatting
Charts and graphs
Merged cells
Conditional formatting

Image Formats

Standard Images

Preview Engine: Native browser <img> rendering + Viewer.js

Full-featured image viewer with:

Zoom in/out with mouse wheel
Pan with drag
Rotate and flip
Fullscreen mode
Image gallery navigation

Supported formats:

.jpg, .jpeg - JPEG images
.png - Portable Network Graphics
.gif - Graphics Interchange Format (animated support)
.webp - WebP images
.bmp - Bitmap images
.svg - Scalable Vector Graphics
.ico - Icon files

TIFF Images

Preview Engine: UTIF.js

Professional TIFF image support with:

Multi-page TIFF documents
High bit-depth images (16-bit, 32-bit)
CMYK color space
LZW and other compressions

Supported formats:

.tif, .tiff - Tagged Image File Format

Archive Formats

Compressed Files

Preview Engine: @zip.js/zip.js (file list only)

Browse ZIP archive contents without extraction:

File list with entry names and sizes
Directory and file indicators
Lazy-loaded viewer (library loads only when a .zip is opened)

Supported formats:

.zip - ZIP archives (file list preview supported)

Coming soon (no file list yet):

.rar - RAR archives
.7z - 7-Zip archives
.tar - Tape Archives
.tar.gz, .tgz - Gzipped tar
.tar.bz2 - Bzipped tar

Diagram & Vector Formats

Draw.io Diagrams

Preview Engine: draw.io embedded viewer

Interactive diagram viewer for:

Flowcharts and process diagrams
Network diagrams
UML diagrams
Architecture diagrams
Pan and zoom
Layer visibility

Supported formats:

.drawio - Draw.io diagrams
.dio - Draw.io native format
.xml - Draw.io XML format

Vector Graphics

Supported formats:

.svg - Scalable Vector Graphics (native browser)

Video Formats

Preview Engine: HTML5 <video> with custom controls

Supported formats:

.mp4 - MPEG-4 video
.webm - WebM video
.ogg, .ogv - Ogg video
.mov - QuickTime video
.avi - Audio Video Interleave
.mkv - Matroska video

Features:

Play/pause controls
Timeline scrubbing
Volume control
Fullscreen mode
Playback speed adjustment

Audio Formats

Preview Engine: HTML5 <audio> with waveform visualization

Supported formats:

.mp3 - MPEG Audio Layer 3
.wav - Waveform Audio
.ogg, .oga - Ogg Audio
.m4a - MPEG-4 Audio
.flac - Free Lossless Audio Codec
.aac - Advanced Audio Coding

Text & Code Formats

Preview Engine: Monaco Editor (VS Code's editor)

Syntax-highlighted code viewer with:

100+ language support
Line numbers
Code folding
Find and replace
Minimap

Supported formats:

.txt - Plain text
.md, .markdown - Markdown (with preview)
.json - JSON
.xml - XML
.html, .htm - HTML
.css - CSS
.js, .jsx - JavaScript
.ts, .tsx - TypeScript
.py - Python
.java - Java
.c, .cpp, .h - C/C++
.cs - C#
.go - Go
.rs - Rust
.php - PHP
.rb - Ruby
.swift - Swift
.kt - Kotlin
.sql - SQL
.yaml, .yml - YAML
.sh, .bash - Shell scripts
And 80+ more...

3D Model Formats

Preview Engine: three.js

Interactive 3D model viewer:

Rotate, pan, zoom
Wireframe/solid toggle
Lighting controls

Supported formats:

.obj - Wavefront OBJ
.stl - Stereolithography
.gltf, .glb - GL Transmission Format
.fbx - Autodesk FBX
.dae - COLLADA

CAD Formats

Preview Engine: CADViewer (commercial license)

Supported formats:

.dwg - AutoCAD Drawing
.dxf - Drawing Exchange Format
.dwf - Design Web Format

E-book Formats

Preview Engine: epub.js

Supported formats:

.epub - Electronic Publication
.mobi - Mobipocket (converted)
.azw - Amazon Kindle

Full Format List

Category	Formats	Count
Documents	PDF, DOCX, DOC, PPTX, PPT	5
Spreadsheets	XLSX, XLS, CSV, TSV, ODS	5
Images	JPG, PNG, GIF, WebP, BMP, SVG, TIFF, ICO	8
Archives	ZIP, RAR, 7Z, TAR, TAR.GZ, TAR.BZ2	6
Diagrams	DRAWIO, DIO, XML (draw.io)	3
Video	MP4, WebM, OGG, MOV, AVI, MKV	6
Audio	MP3, WAV, OGG, M4A, FLAC, AAC	6
Code/Text	JS, TS, PY, Java, C++, Go, Rust, and 80+ more	90+
3D Models	OBJ, STL, GLTF, GLB, FBX, DAE	6
CAD	DWG, DXF, DWF	3
E-books	EPUB, MOBI, AZW	3
Total		110+

Supported Formats Table

The following table lists all supported file formats with preview links and support status:

File Extension	Preview Link	Support Status
Document Formats
`.pdf`	/p/showcase-pdf	✅ Supported
`.docx`	/p/showcase-docx	✅ Supported
`.doc`	/p/showcase-doc	✅ Supported
`.pptx`	/p/showcase-pptx	✅ Supported
`.ppt`	/p/showcase-ppt	✅ Supported
`.odt`	/p/showcase-odt	✅ Supported
`.odp`	/p/showcase-odp	✅ Supported
`.rtf`	/p/showcase-rtf	✅ Supported
`.ofd`	/p/showcase-ofd	✅ Supported
Spreadsheet Formats
`.xlsx`	/p/showcase-xlsx	✅ Supported
`.xls`	/p/showcase-xls	✅ Supported
`.xlsm`	/p/showcase-xlsm	✅ Supported
`.csv`	/p/showcase-csv	✅ Supported
`.tsv`	/p/showcase-tsv	✅ Supported
`.ods`	/p/showcase-ods	✅ Supported
Image Formats
`.jpg`	/p/showcase-jpg	✅ Supported
`.jpeg`	/p/showcase-jpeg	✅ Supported
`.jfif`	/p/showcase-jfif	✅ Supported
`.png`	/p/showcase-png	✅ Supported
`.gif`	/p/showcase-gif	✅ Supported
`.webp`	/p/showcase-webp	✅ Supported
`.bmp`	/p/showcase-bmp	✅ Supported
`.svg`	/p/showcase-svg	✅ Supported
`.ico`	/p/showcase-ico	✅ Supported
`.tiff`	/p/showcase-tiff	✅ Supported
`.tif`	/p/showcase-tif	✅ Supported
`.avif`	/p/showcase-avif	✅ Supported
`.tga`	/p/showcase-tga	🚧 Coming Soon
`.wmf`	/p/showcase-wmf	🚧 Coming Soon
`.emf`	/p/showcase-emf	🚧 Coming Soon
`.psd`	/p/showcase-psd	✅ Supported
`.eps`	/p/showcase-eps	🚧 Coming Soon
Video Formats
`.mp4`	/p/showcase-mp4	✅ Supported
`.webm`	/p/showcase-webm	✅ Supported
`.avi`	/p/showcase-avi	✅ Supported
`.mov`	/p/showcase-mov	✅ Supported
`.mkv`	/p/showcase-mkv	✅ Supported
`.ogv`	/p/showcase-ogv	✅ Supported
`.flv`	/p/showcase-flv	🚧 Coming Soon
`.wmv`	/p/showcase-wmv	🚧 Coming Soon
`.3gp`	/p/showcase-3gp	🚧 Coming Soon
`.mpeg`	/p/showcase-mpeg	🚧 Coming Soon
Audio Formats
`.mp3`	/p/showcase-mp3	✅ Supported
`.wav`	/p/showcase-wav	✅ Supported
`.ogg`	/p/showcase-ogg	✅ Supported
`.oga`	/p/showcase-oga	✅ Supported
`.flac`	/p/showcase-flac	✅ Supported
`.aac`	/p/showcase-aac	✅ Supported
`.m4a`	/p/showcase-m4a	✅ Supported
Code & Text Formats
`.js`	/p/showcase-js	✅ Supported
`.jsx`	/p/showcase-jsx	✅ Supported
`.ts`	/p/showcase-ts	✅ Supported
`.tsx`	/p/showcase-tsx	✅ Supported
`.py`	/p/showcase-py	✅ Supported
`.md`	/p/showcase-md	✅ Supported
`.markdown`	/p/showcase-markdown	✅ Supported
`.txt`	/p/showcase-txt	✅ Supported
`.json`	/p/showcase-json	✅ Supported
`.xml`	/p/showcase-xml	✅ Supported
`.yaml`	/p/showcase-yaml	✅ Supported
`.yml`	/p/showcase-yml	✅ Supported
`.html`	/p/showcase-html	✅ Supported
`.htm`	/p/showcase-htm	✅ Supported
`.css`	/p/showcase-css	✅ Supported
`.java`	/p/showcase-java	✅ Supported
`.php`	/p/showcase-php	✅ Supported
Archive Formats
`.zip`	/p/showcase-zip	🚧 Coming Soon
`.rar`	/p/showcase-rar	🚧 Coming Soon
`.7z`	/p/showcase-7z	🚧 Coming Soon
`.tar`	/p/showcase-tar	🚧 Coming Soon
`.gz`	/p/showcase-gzip	🚧 Coming Soon
`.tar.gz`	/p/showcase-targz	🚧 Coming Soon
`.tgz`	/p/showcase-tgz	🚧 Coming Soon
`.tar.bz2`	/p/showcase-tarbz2	🚧 Coming Soon
`.jar`	/p/showcase-jar	🚧 Coming Soon
Diagram & Flowchart Formats
`.drawio`	/p/showcase-drawio	✅ Supported
`.dio`	/p/showcase-dio	✅ Supported
`.bpmn`	/p/showcase-bpmn	🚧 Coming Soon
`.xmind`	/p/showcase-xmind	🚧 Coming Soon
3D Model Formats
`.glb`	/p/showcase-glb	✅ Supported
`.gltf`	/p/showcase-gltf	✅ Supported
`.obj`	/p/showcase-obj	✅ Supported
`.stl`	/p/showcase-stl	✅ Supported
`.ply`	/p/showcase-ply	✅ Supported
`.3ds`	/p/showcase-3ds	✅ Supported
`.fbx`	/p/showcase-fbx	✅ Supported
`.dae`	/p/showcase-dae	✅ Supported
CAD Formats
`.dwg`	/p/showcase-dwg	🚧 Coming Soon
`.dxf`	/p/showcase-dxf	🚧 Coming Soon
`.dwfx`	/p/showcase-dwf	🚧 Coming Soon
E-book Formats
`.epub`	/p/showcase-epub	✅ Supported
`.mobi`	/p/showcase-mobi	🚧 Coming Soon
`.azw3`	/p/showcase-azw	🚧 Coming Soon
Other Formats
`.eml`	/p/showcase-eml	🚧 Coming Soon
`.dcm`	/p/showcase-dcm	🚧 Coming Soon
Coming Soon
`.ai`	-	🚧 Coming Soon
`.sketch`	-	🚧 Coming Soon
`.fig`	-	🚧 Coming Soon