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AJT

Jpegtran for Android
1.3 for Android

The description of AJT

Summary
=======
Jpegtran is CUI tool developed by IJG(Independent JPEG Group).
This software is Jpegtran ported to Android.
Jpegtran can perform the following operations without quality loss.

- Rotation in 90 degree units (-rotate)
- Make grayscale image (Drop color components) (- grayscale)
- Flipping horizontal / verticval / XY axes (-flip, -transpose, -transverse)
- Cut out part of image (-crop)
- Partial fill of image (-wipe)
- Optimization of Huffman table (-optimize)
- Conversion to progressive JPEG (-progressive)
- Add restart marker (-restart)


How to use
==========
- Tap [Input]. Since the gallery opens, choose a JPEG image.
- Tap [Switch] to select the operation to be performed on the JPEG image.
- The output file name automatically generated and displayed to [Output].
If you want to change, tap [Output].
- Press the [Execute] button
- When OK is displayed in [Result], processing is finished.
By tapping [Result], you can check the result.


Crop and Wipe
=============
The area of Crop and Wipe can be specified while watching the image.
Choose [Switch] -> [Transform] -> [AreaSelector].
An image is displayed and a white line is displayed at the boundary.
Drag this white line and specify the area.
Image information can be displayed by long tapping.


Other operations
=============
Press Menu key, or press three dots on title bar, menu will be displayed.
- Input selector
You can choose to use the gallery to select images or use the built-in file selector.
- Default output
You can select how to automatically generate filenames.
File name appended with "_ajt" in the same directory.
Save to specified directory.

To long tap [Input], you can check the source JPEG image.


Example of operation
====================
Here is an example of the operation to cut out part of an image.

- Tap [Input] and select an image
- Choose [Switch] -> [Entropy coding] -> [-optimize]
You can reduce the file size with this operation.
- Select [Switch] -> [Transform] -> [TransformType] -> [Crop]
- Select [Switch] -> [Transform] -> [TransformType] -> [AareSelector]
As the image is displayed, drag the white frame to make the area of the image.
- Tap [Executte] to execute "Jpegtran"
- Tap [Result] and check the result image.


About this software
===================
This software is based on part on the work of the Independent JPEG Group.
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AJT 1.3 Update

2019-05-01
Fix image viewer behavior
-Fix the problem that coordinates jump after pinch in and pinch out
-Supports zooms other than integer multiples

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Additional Information

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Previous versions
  • V1.3 378.7 KB APK

    AJT

    2019-05-01

    AJT 1.3 (4)

    Update on: 2019-05-01

    Requires Android: Android 4.1+ (Jelly Bean, API 16)

    Signature: ac73cfc0a47cdf61c3ef22e12bb7bcaad8f28e5e AJT 1.3(4) safe verified

    Screen DPI: 120-640dpi

    Architecture: arm64-v8a, armeabi-v7a, x86, x86_64

    File SHA1: 1eefdf3ebbff96f9383a70d9b21776fcc28715bf

    File Size: 378.7 KB

    What's new:

    Download

  • V1.2 390.6 KB APK

    AJT

    2019-02-03

    AJT 1.2 (3)

    Update on: 2019-02-03

    Requires Android: Android 4.1+ (Jelly Bean, API 16)

    Signature: ac73cfc0a47cdf61c3ef22e12bb7bcaad8f28e5e AJT 1.2(3) safe verified

    Screen DPI: 120-640dpi

    Architecture: arm64-v8a, armeabi-v7a, x86, x86_64

    File SHA1: 60f47172cb1dca205c11625a93095994fd8ef965

    File Size: 390.6 KB

    What's new:

    Download

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