File formats you can open on phone

OpenOnPhone explains common file formats and, where supported, previews them locally in your browser. File content stays on your device.

Supported now

These formats can be previewed locally in your phone browser today.

JSON

.json

Local preview

View JSON files locally on iPhone or Android with OpenOnPhone.

CSV

.csv

Local preview

Preview CSV files as a local table on iPhone or Android.

Markdown

.md

Local preview

Read Markdown files locally in your phone browser.

Text

.txt

Local preview

Preview plain text files locally on iPhone or Android.

Log

.log

Local preview

Inspect log files locally in your phone browser.

SVG

.svg

Local preview

Preview SVG files locally with safer browser handling.

XML

.xml

Local preview

Preview XML files locally with formatting on iPhone or Android.

YAML

.yaml

Local preview

Preview YAML files locally as a structured tree on iPhone or Android.

YML

.yml

Local preview

Preview YML files locally as structured YAML on iPhone or Android.

TTF

.ttf

Local preview

Preview TrueType font files locally on iPhone or Android.

OTF

.otf

Local preview

Preview OpenType font files locally on iPhone or Android.

WOFF

.woff

Local preview

Preview WOFF web font files locally on iPhone or Android.

WOFF2

.woff2

Local preview

Preview WOFF2 web font files locally on iPhone or Android.

EPUB

.epub

Local preview

Preview non-DRM EPUB books locally on iPhone or Android.

GeoJSON

.geojson

Local preview

Preview GeoJSON feature and geometry structure locally on iPhone or Android.

GPX

.gpx

Local preview

Preview GPX route structure locally on iPhone or Android.

KML

.kml

Local preview

Preview KML placemark and coordinate structure locally on iPhone or Android.

STL

.stl

Local preview

Preview STL 3D model files locally on iPhone or Android.

GLB

.glb

Local preview

Preview GLB 3D model files locally on iPhone or Android.

glTF

.gltf

Local preview

Preview single-file embedded glTF models locally on iPhone or Android.

OBJ

.obj

Local preview

Preview single-file OBJ geometry locally on iPhone or Android.

DXF

.dxf

Local preview

Preview basic DXF CAD drawings locally on iPhone or Android.

Watching demand

These formats are tracked for demand. The pages explain what to try next.

ZIP

.zip

Tracking demand

Learn how ZIP archives behave on phones and what OpenOnPhone can do next.

DWG

.dwg

Tracking demand

Learn how to handle DWG CAD drawings on iPhone or Android.

Use native or WeChat preview

OpenOnPhone does not plan to preview these common formats because phones and WeChat already handle them.

PDF

.pdf

Native preview

Learn how to open PDF files on iPhone or Android and check OpenOnPhone guidance.

Word DOC

.doc

Native preview

Learn why DOC files may not open cleanly on phones and what to try next.

Word DOCX

.docx

Native preview

Learn how to handle DOCX files on iPhone or Android.

Excel XLS

.xls

Native preview

Learn why older Excel files can be hard to inspect on phones.

Excel XLSX

.xlsx

Native preview

Learn how to handle XLSX spreadsheets on iPhone or Android.

PowerPoint PPT

.ppt

Native preview

Learn what to do when older PowerPoint files do not open on phones.

PowerPoint PPTX

.pptx

Native preview

Learn how to view PPTX presentations on iPhone or Android.