JuliaImages/Images.jl

Changing compression level when saving image as jpg

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#822 opened on Oct 29, 2019

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documentationhelp wanted

Description

The documentation says that save() allows options to be set, but it doesn't say how to change the compression level when saving an image as jpg. The documentation "save(f, data...; options...) passes keyword arguments on to the saver" seems to suggest that options are accepted, but doesn't describe these options.

Contributor guide

Tech stack
None
Domain
documentation
Issue type
documentation
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
under 1 hour
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
Julia basics
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
85
Research direction
Examine the save function in the Images.jl source code, particularly the JPEG I/O module (likely in src/ioformats/), to identify the keyword argument for compression level (e.g., 'quality' or 'compression'). Then update the documentation in the docstring of the save function or in the manual to include this option with an example.