https://github.com/k3b/losslessjpgcrop

Android lossles jpg cropping app without reencoding quality-losses
https://github.com/k3b/losslessjpgcrop

android android-image-cropper cropper images intent-interface jpg libjpeg lossless mozjpeg photos

Last synced: about 1 month ago
JSON representation

Android lossles jpg cropping app without reencoding quality-losses

• Host: GitHub
• URL: https://github.com/k3b/losslessjpgcrop
• Owner: k3b
• License: gpl-3.0
• Created: 2019-04-18T13:45:41.000Z (about 6 years ago)
• Default Branch: master
• Last Pushed: 2025-03-07T08:31:55.000Z (3 months ago)
• Last Synced: 2025-03-26T23:07:16.948Z (about 2 months ago)
• Topics: android, android-image-cropper, cropper, images, intent-interface, jpg, libjpeg, lossless, mozjpeg, photos
• Language: Java
• Homepage:
• Size: 2.8 MB
• Stars: 62
• Watchers: 4
• Forks: 10
• Open Issues: 9
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

README

        
#  LLCrop

Loss Less Cropping and Image Rotation: Remove unwanted parts of jpg photo without quality loss.



While there are many apps capable of cropping images (often with additional features), 

they generally cause quality loss because they 

[re-encode to JPEG again](https://en.wikipedia.org/wiki/Lossy_compression) when saving the output file.

LLCrop (the "LL" stands for lossless) can [crop JPEG images without quality loss](https://en.wikipedia.org/wiki/Lossy_compression#JPEG) 

because it crops the raw JPEG image without re-encoding the file. It also preserves embedded metadata (EXIF/IPTC and XMP).

Simply load a JPEG image from the in-app image browser, adjust the rectangular selection, rotate it if necessary and save it as a new image file.

Note: This app is focused on lossless JPEG image manipulation, so issues that propose additional 

features (e.g. support for other file formats, add resize-support or adding text to images) are out of scope.

---

## Supported Workflows and Features:

* Workflow [#1](https://github.com/k3b/LosslessJpgCrop/issues/1) : From Android **app launcher**:

    * Pick an image and crop it to a new public file 

* Workflow [#1](https://github.com/k3b/LosslessJpgCrop/issues/1) : From any **file manager** or **gallery app** that supports [intent-action-EDIT](https://developer.android.com/reference/android/content/Intent#ACTION_EDIT) for MIME *image/jpeg*:

    * Crop current selected image to a new public file 

* Workflow [#2](https://github.com/k3b/LosslessJpgCrop/issues/2) : From any app that supports [intent-action-SEND](https://developer.android.com/reference/android/content/Intent#ACTION_SEND) or [intent-action-SEND-TO](https://developer.android.com/reference/android/content/Intent#ACTION_SENDTO) for MIME *image/jpeg*

    * Send/SendTo/Share a cropped version of the currently selected image 

* Workflow [#3](https://github.com/k3b/LosslessJpgCrop/issues/3)/[#8](https://github.com/k3b/LosslessJpgCrop/issues/8) : From any app that supports [intent-action-GET-CONTENT](https://developer.android.com/reference/android/content/Intent#ACTION_GET_CONTENT) or intent-action-PICK for MIME *image/jpeg*

    * Open/Pick the cropping of an uncropped image

* Feature [#17](https://github.com/k3b/LosslessJpgCrop/issues/17)  (Since Version 1.2) : added support for image rotation

* Feature [#35](https://github.com/k3b/LosslessJpgCrop/issues/35) (Since [Version 1.3](https://github.com/k3b/LosslessJpgCrop/milestone/5)) : Display current crop box coordinates and size

    * Show XY offset of top left corner of crop box displayed along with it's dimensions. 

    * You can get more predictable results by sticking to 8 or 16 multiples for offset and box size allows to target aspect ratio.

* Feature [#15](https://github.com/k3b/LosslessJpgCrop/issues/15) (Since [Version 1.3](https://github.com/k3b/LosslessJpgCrop/milestone/5))  : Define crop box size or aspect ratio 

  * if you set width and height to a value below 100 then you define the aspect ratio of the cropping result. Example 9x13

  * if you set width and height to a value above 100 then you define the absolute size in pixel of the cropping result. Example 400x600

---

## Requirements

* Android 4.4 KitKat (API 19) or newer

* CPU arm64-v8a, arbeabi-v7a, x86 or x86_64 because of the C++ cropping code

* Permissions

  * READ_EXTERNAL_STORAGE (to open a local image)

  * WRITE_EXTERNAL_STORAGE (to save the cropped image)

---

[](https://f-droid.org/packages/de.k3b.android.lossless_jpg_crop)


[](https://f-droid.org/packages/de.k3b.android.lossless_jpg_crop)