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All tools
Browse the complete Tools4U library, filter by category, and open the tool you need in seconds. 400 tools across 16 categories.
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Browse categoriesJSON Formatter
Format and beautify JSON into clean, readable output in one click.
JSON Validator
Check JSON for errors and see exactly where the problem is.
JSON Minifier
Strip whitespace and comments to make JSON as small as possible.
JSON Beautifier
Format and beautify JSON into clean, readable output in one click.
JSON to CSV
Convert JSON files to CSV in your browser — fast, free and private.
CSV to JSON
Convert CSV files to JSON in your browser — fast, free and private.
JSON to XML
Convert JSON files to XML in your browser — fast, free and private.
XML to JSON
Convert XML files to JSON in your browser — fast, free and private.
JSON to YAML
Convert JSON files to YAML in your browser — fast, free and private.
YAML to JSON
Convert YAML files to JSON in your browser — fast, free and private.
JSON Viewer
Open and explore JSON in a readable, collapsible view.
JSON Tree Viewer
Open and explore JSON Tree in a readable, collapsible view.
JSON Diff
JSON Diff — a free json tool in the Tools4U Developer Tools collection.
JSON Escape
JSON Escape — a free json tool in the Tools4U Developer Tools collection.
JSON Unescape
JSON Unescape — a free json tool in the Tools4U Developer Tools collection.
Base64 Encode
Base64 Encode — a free encoding tool in the Tools4U Developer Tools collection.
Base64 Decode
Base64 Decode — a free encoding tool in the Tools4U Developer Tools collection.
URL Encode
URL Encode — a free encoding tool in the Tools4U Developer Tools collection.
URL Decode
URL Decode — a free encoding tool in the Tools4U Developer Tools collection.
HTML Encode
HTML Encode — a free encoding tool in the Tools4U Developer Tools collection.
HTML Decode
HTML Decode — a free encoding tool in the Tools4U Developer Tools collection.
Unicode Encode
Unicode Encode — a free encoding tool in the Tools4U Developer Tools collection.
Unicode Decode
Unicode Decode — a free encoding tool in the Tools4U Developer Tools collection.
JWT Decoder
Decode JWT safely in your browser — nothing is uploaded.
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