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I have to refer large logs everyday(>20K lines).

Sometimes there are JSONs in the logs. These JSONs are HUGE(>3-5K lines) These impact the readability of the logs - making them very difficult to read.

I am looking for a free, preferably open-source log viewer which can help me deal with these JSONs - just simple operations like colour encoding and collapsing(I really need this) will be of great help to improve the readability.

Can someone please suggest something.

  • How to distinguish in these logs what should be treated as JSON (as basically any number is valid JSON by itself) and what shouldn't? Any log example? – TMSZ Jan 11 '18 at 13:38
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Found this free library on GitHub which I had used earlier. Log viewer converts the patch of text into individual blocks of json data for easy viewing of large logs of json files. Additionally the log viewer has various search functionality which is useful for such large logs debugging/extracting information. Software is distributed under MIT license.

JSON Log Viewer

Sample snapshot

  • Please add some text explaining why this would help the OP. This is currently just a link-only answer and will probably get deleted. – Jan Doggen Oct 21 '18 at 11:08
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Not really free but really affordable is JSONBuddy. It has built-in grid and text views and can work with large data as well. It also has syntax-coloring and collapsing. enter image description here

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