Formattery: 文件格式转换器

Convert any file quickly and privately, 100% on your device.
Formattery can instantly convert images, documents, videos, and audio files without uploading anything to the cloud. Your files will never leave your iPhone or iPad.
Supported Formats
Images: HEIC/HEIF, WebP, SVG, PNG, JPG/JPEG, TIFF/TIF, BMP, GIF, ICO
Camera RAW: DNG, CR2, NEF, ARW, ORF, RW2, RAF
Documents: PDF, RTF
Office: DOCX, XLSX, PPTX, CSV, ODT, ODP, XLS, Pages, Keynote
Videos: MP4, MOV, MKV, WebM, AVI, FLV, WMV, 3GP, OGV
Audio: MP3, M4A, WAV, AAC, AIFF, FLAC, OGG, Opus, WMA, AC3
eBooks: ePub
Subtitles: SRT, VTT, ASS, LRC, SBV, SUB
GPS: GPX, KML, KMZ, GeoJSON, TCX
3D Models: STL, OBJ, PLY, DAE, USDZ
Markup Languages: Markdown (.md/.markdown), HTML/HTM, Plain Text
Archives: ZIP, TAR, GZ/GZIP, 7Z, RAR, CBR, CBZ
Tools: File Hash (MD5, SHA-1/256/384/512, CRC32), Metadata Viewer
Main Features
- 100% Offline - No internet connection required, no upload to the cloud
- Batch Conversion - Convert multiple files at once
- Office Documents - Convert formats like DOCX, XLSX, PPTX, etc. (experimental feature)
- File Preview - Preview the converted files before sharing
- Source File Thumbnails - See what's being converted at a glance
- Adjustable Quality - Precise control over compression rate and video resolution
- Quick Preview - Click on history to preview converted files
- Photo Gallery Integration - Save to a dedicated Formattery album
- Conversion History - Easily find and share past conversion records
- 3D Model Conversion — STL, OBJ, PLY, DAE, USDZ
- ePub eBooks — Read and create ePub files
- Compressed Formats — ZIP, TAR, GZ, 7Z, RAR decompression
- Dark Mode - Looks great in any light condition
Free vs. Pro
Image conversion is completely free. Upgrade once to unlock PDF, video, and audio conversion — no subscriptions, no ads.
Privacy First
Every conversion happens entirely on your device. We don't collect data, track usage, or upload your files anywhere.