Skip to content
Allset Lab

Developer tools

Format, encode, and hash text

Pretty-print JSON and XML, encode text, decode a JWT, convert CSV or YAML, and generate SHA checksums without leaving the page.

Paste text, run the tool, and copy the result. Nothing you paste is sent to a server.

Choose a tool
  • No signup
  • Free to use
  • Works in your browser
  • Nothing is uploaded

Start now

Choose a tool and start.

Each tool opens instantly. Paste text, run it, and copy the result.

JSON Formatter Check that JSON is valid, then pretty-print it or minify it. Format JSON Base64 Turn text into Base64, or decode a Base64 string back to text. Encode or decode URL Encode Percent-encode a query value, or decode an encoded URL. Encode URL Hash Create a SHA-256 checksum, or choose SHA-384, SHA-512, or SHA-1. Generate hash CSV to JSON Turn a CSV table into a JSON array, with headers as keys. Convert CSV JSON to CSV Turn a JSON array of objects into a CSV table. Convert JSON JWT decoder Read a token header and payload. The signature is not verified. Decode token XML formatter Indent XML so the structure is easier to read. Format XML YAML to JSON Turn YAML keys and lists into pretty JSON. Convert YAML Cron explainer Read a cron expression in plain language. Explain cron

How it works

Three quick steps from open to result.

  1. Choose a tool

    Open JSON, Base64, URL encode, hash, CSV, JWT, XML, YAML, or cron.

  2. Paste your text

    Add the snippet you want to format, encode, hash, or convert.

  3. Copy the result

    Copy the formatted text, checksum, or JSON. Nothing is sent to a server.

Why use the developer tools

Concrete reasons people open these tools and finish the job in one visit.

Fast

Formatting, encoding, and hashing run in the page as soon as you click.

Private

Snippets, tokens, and table data stay in your browser.

Free

No account and no watermark on the copied result.

Simple

Input and output sit side by side, so you can compare them without scrolling.

Frequently asked questions

Are the developer tools free?

Yes. JSON, XML, JWT decoding, Base64, URL encoding, hashing, CSV, YAML, and cron explanations are free and do not require an account.

Is pasted text uploaded?

No. Parsing, encoding, hashing, and conversion happen in your browser and are not sent to our servers.

Which hash algorithms are available?

SHA-256 is the default. You can also create SHA-384, SHA-512, or SHA-1 checksums.

How does CSV to JSON work?

The first row becomes the object keys. Each following row becomes one JSON object in an array. Quoted commas stay inside their cell.