Compress json to zip - Githubissues

tmo1 / sms-ie

SMS Import / Export is a simple Android app that imports and exports SMS and MMS messages, call logs, and contacts from and to JSON / NDJSON files.

GNU General Public License v3.0

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Compress json to zip #191

Open sawka6630 opened 3 months ago

sawka6630 commented 3 months ago

Please add post-export zip compression of json files (created by auto backup feature particularly). It will reduce the target file size significantly. For example:

contacts.json file comes from 15.51 Mb to 673 kb when compressed using regular (level 6) compression and to 592 kb when compressed using the highest (level 9) compression,
calls.json file comes from 2.69 Mb to 109 kb (level 6) and to 99 kb (level 9).

In general this will allow to save ~17.5 Mb per day.

tmo1 commented 3 months ago

I agree that the space savings would be desirable. If and when we switch the format from simple JSON to (ND)JSON encapsulated in a ZIP file, then we'll get compression automatically (as is currently the case for messages), but format changes require careful consideration and planning, since they break backward compatibility.