Base64 Encode / Decode
Tools
Format JSON, convert JSON to CSV, encode Base64 and generate SHA-256 hashes. Everything runs locally in your browser.
How to use the developer tools in 4 steps
Format, convert, encode and hash anything in under a minute — all in your browser.
Pick from the tabs: JSON Formatter, JSON to CSV, Base64 or SHA-256. The page opens on the tool that matches the URL you visited.
Type or paste your JSON, text or hash input into the input box. Everything stays in your browser — nothing is uploaded to a server.
Output updates instantly as you type: formatted JSON, CSV rows, encoded Base64 or a SHA-256 hash. Syntax errors are flagged immediately.
Use the Copy button to grab the result or Download to save it as a .txt or .csv file. Ready for your workflow in one click.
Quick reference examples
See each developer tool in action with a real input and its output.
| Tool | Input | Output |
|---|---|---|
| JSON Formatter | {"name":"Ada","age":36} | Pretty-printed JSON with 2-space indentation |
| Base64 | hello | aGVsbG8= |
| SHA-256 | hello | 2cf24dba5fb0a30e26e83b2ac5b9e29e1b161e5c1fa7425e73043362938b9824 |
Example: formatting {"name":"Ada","age":36} outputs readable, validated JSON. Base64 "hello" encodes to aGVsbG8= and SHA-256 "hello" hashes to 2cf24dba5fb0a30e26e83b2ac5b9e29e1b161e5c1fa7425e73043362938b9824.
Developer Tools
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Open the toolsDeveloper Tools FAQs
No. Every tool runs entirely in your browser — your JSON, text and hashes never leave your device, so you stay 100% private.
Yes. All tools are free with unlimited usage and no signup, account or credit card required.
Yes. It parses your input with strict JSON syntax checking and reports the exact line where an error occurs, plus a helpful message.
Hashing runs locally through the browser Web Crypto API and is cryptographically secure. SHA-256 is a one-way function, so the hash cannot be reversed.
The JSON to CSV converter flattens objects into rows with headers. Arrays of objects work best — each object becomes a CSV row with its keys as columns.
It safely encodes UTF-8 text — emoji, accents and non-Latin scripts — to standard Base64 and decodes it back without corrupting characters.
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