JSON & Base64 Lessons
Hands-on lessons that go with the formatter — the rules that keep JSON valid, the mistakes that break parsers, and how Base64 turns binary data into text you can drop straight into JSON.
JSON Formatter Online: Stop Editing JSON by Hand
The full guide on the LK Forge blog — what a formatter does, why validating and formatting are different jobs, when to minify, how to keep payloads private, and the mistakes that waste hours.
Read JSONJSON Formatting Rules & the Errors That Break Parsers
Double quotes, no trailing commas, no comments, valid number and escape syntax — the complete rule set, each paired with the parser error you will see when you break it.
Read Base64Base64 Lessons: How Encoding Turns Data Into Safe Text
Why binary needs encoding, how the 64-character alphabet and padding work, the one-third size cost, and why Base64 is encoding — not encryption — with JSON examples.
ReadThese posts cover the day-to-day problems people actually hit when working with JSON and Base64: a parser rejecting a payload over a trailing comma or a single quote, an API returning binary data that needs to travel inside a JSON string, or a "formatter" that turns out to be silently uploading whatever gets pasted into it. Each lesson pairs the rule with the exact error message you would see when you break it, so you can match the error in your own console to the fix here. They're written to be read alongside the formatter above, with real before-and-after examples you can paste in and try, rather than abstract rules with no working code attached.