JSON Minifier
Developer ToolsCompress JSON into one small line
FreePrivateInstant
Similar tools you may like
History
All history →JSON Minifier — at a glance
Remove all spaces and line breaks from JSON to make it as small as possible for APIs, config files and storage.
{ "a": 1, "b": [1, 2] }
Run
{"a":1,"b":[1,2]}
How to use it — step by step
Valid JSON text.
1
Paste your input
Paste or type your content into the big input box. Try a sample if you want to see it work.
2
Choose options
Pick the mode and options that fit what you need.
3
Minify JSON
Press the button. The result is created instantly on your device.
4
Copy the result
Check the output and press Copy to use it anywhere.
Pro tips
Small things that make the result better.
✦Minify JSON before sending it in an API request or saving it in a database.
✦Keep a formatted copy for editing — minified JSON is hard to read.
✦If you get an error, run the text through the JSON Validator first.
Quick facts
Freeno signup, no limit
Instantresult in a moment
Privatenothing is uploaded
Any devicephone, tablet or PC
Frequently Asked Questions
Does minifying change my data?+
No. Only spaces and line breaks are removed. Keys, values and order stay exactly the same.
Is my data safe?+
Yes. Everything runs inside your own browser. Your text, files and images are never uploaded to any server.
Is this tool really free?+
Yes — completely free, no signup, no watermark and no usage limit.
More Free Tools
Guides you might like
All guides →JWT DecoderInside a JWT: three parts, two dots, and why decoding is not the same as trustingJSON FormatterWhy your JSON will not parse, and how to find the bad commaRobots.txt Generatorrobots.txt explained: Allow, Disallow, wildcards and the mistakes that block your siteChmod Calculatorchmod permissions explained: what 755, 644 and 777 actually mean