thumbnailer 3.1.0

Plugin that is able to generate thumbnails from files with various mime types. If thumbnail generation is not support for specific mime type, then a fallback icon is returned

thumbnailer

A Flutter plugin that is able to generate thumbnails for images, pdf and xlsx files

• if thumbnail generation is not supported for specific mime type, then a fallback icon from FontAwesome is returned
• supports registering custom mime type handlers for dynamic extendability
• resulting thumbnail (or fallback icon) is flutter widget
• supports custom resizing/styling of the resulting thumbnail

Why

In time of creation of this plugin, there was no available solution on pub.dev

Usage

To use this plugin, add thumbnailer as a dependency in your pubspec.yaml file.

Icons

By default, plugin provides following icons based on mimetype

MIME Type	Icon
image
application/pdf
application/msword
application/vnd.openxmlformats-officedocument.wordprocessingml.document
application/vnd.oasis.opendocument.text
application/vnd.ms-excel
application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
application/vnd.oasis.opendocument.spreadsheet
application/vnd.ms-powerpoint
application/vnd.openxmlformats-officedocument.presentationml.presentation
application/vnd.oasis.opendocument.presentation
text/plain
text/csv
application/x-archive
application/x-cpio
application/x-shar
application/x-iso9660-image
application/x-sbx
application/x-tar
application/x-bzip2
application/gzip
application/x-lzip
application/x-lzma
application/x-lzop
application/x-snappy-framed
application/x-xz
application/x-compress
application/zstd
application/java-archive
application/octet-stream
application/vnd.android.package-archive
application/vnd.ms-cab-compressed
application/x-7z-compressed
application/x-ace-compressed
application/x-alz-compressed
application/x-apple-diskimage
application/x-arj
application/x-astrotite-afa
application/x-b1
application/x-cfs-compressed
application/x-dar
application/x-dgc-compressed
application/x-freearc
application/x-gca-compressed
application/x-gtar
application/x-lzh
application/x-lzx
application/x-ms-wim
application/x-rar-compressed
application/x-stuffit
application/x-stuffitx
application/x-xar
application/x-zoo
application/zip
text/html
text/javascript
text/css
text/x-python
application/x-python-code
text/xml
application/xml
text/x-c
application/java
application/java-byte-code
application/x-java-class
application/x-csh
text/x-script.csh
text/x-fortran
text/x-h
application/x-ksh
text/x-script.ksh
application/x-latex
application/x-lisp
text/x-script.lisp
text/x-m
text/x-pascal
text/x-script.perl
application/postscript
text/x-script.phyton
application/x-bytecode.python
text/x-asm
application/x-bsh
application/x-sh
text/x-script.sh
text/x-script.zsh
default

You can override these, or add custom one using Thumbnailer.addCustomMimeTypesToIconDataMappings

Generation strategies

Thunbnailer allows you to provide custom thumbnail based on dynamic variables like content of file. Basic implementacion have following generation strategies:

• Images — show inlined image
• PDF — Show highlight of first page
• XLS / ODT — Show highlight of first sheet.

You can extend these using Thumbnailer.addCustomGenerationStrategies

Example

Check the example tab here in pub.dev or example project on GitHub

Contribution and Support

• Contributions are welcome!
• If you want to contribute code please create a PR
• If you find a bug or want a feature, please fill an issue