Zaleso

Generate a QR code as an SVG image from text or a URL. The code encodes the value directly — no tracking redirect, so it works forever. Interactive version: https://zaleso.com/qr

{
  "type": "object",
  "properties": {
    "text": {
      "type": "string",
      "description": "Text or URL to encode (max 2953 chars)"
    },
    "errorCorrection": {
      "type": "string",
      "enum": [
        "L",
        "M",
        "Q",
        "H"
      ],
      "description": "Error correction level; H survives print damage best. Default M."
    }
  },
  "required": [
    "text"
  ]
}

Generate a cryptographically secure random password (crypto.getRandomValues with rejection sampling — no modulo bias). Returns the password and its entropy. Interactive version: https://zaleso.com/password

{
  "type": "object",
  "properties": {
    "length": {
      "type": "integer",
      "minimum": 4,
      "maximum": 128,
      "description": "Default 20"
    },
    "symbols": {
      "type": "boolean",
      "description": "Include !@#$ etc. Default true"
    },
    "excludeAmbiguous": {
      "type": "boolean",
      "description": "Drop lookalikes (l, I, 1, O, 0) for passwords that get read aloud"
    }
  }
}

Calculate Nigeria PAYE income tax and net (take-home) salary under the Nigeria Tax Act 2025, effective for the 2026 tax year. Returns monthly take-home, monthly PAYE, the effective rate, and the full band-by-band working, with the statutory source and verification date. Handles pension (8%), NHF (2.5%, voluntary), rent relief (20% of rent, capped at ₦500,000), and the minimum-wage exemption. Figures are informational — verify with the tax authority. Interactive version: https://zaleso.com/ng/paye

{
  "type": "object",
  "properties": {
    "grossIncome": {
      "type": "number",
      "description": "Gross salary in naira (before tax and deductions)."
    },
    "period": {
      "type": "string",
      "enum": [
        "monthly",
        "annual"
      ],
      "description": "Whether grossIncome is monthly or annual. Default monthly."
    },
    "includePension": {
      "type": "boolean",
      "description": "Deduct the 8% employee pension contribution (PRA 2014). Default true."
    },
    "includeNhf": {
      "type": "boolean",
      "description": "Deduct the 2.5% National Housing Fund contribution — voluntary for private-sector employees since 2023. Default false."
    },
    "rentPaidAnnual": {
      "type": "number",
      "description": "Annual rent actually paid, in naira. Unlocks rent relief (20% of rent, capped at ₦500,000). Relief is claim-based: omit if no rent is declared."
    },
    "otherDeductionsAnnual": {
      "type": "number",
      "description": "Other eligible annual deductions actually paid (NHIS, life-insurance premium), in naira."
    }
  },
  "required": [
    "grossIncome"
  ]
}

Format (pretty-print) or minify JSON. Invalid input returns the line and column of the error. Interactive version: https://zaleso.com/json

{
  "type": "object",
  "properties": {
    "json": {
      "type": "string",
      "description": "The JSON text"
    },
    "mode": {
      "type": "string",
      "enum": [
        "format",
        "minify"
      ],
      "description": "Default format"
    },
    "indent": {
      "type": "integer",
      "minimum": 1,
      "maximum": 8,
      "description": "Spaces; default 2"
    }
  },
  "required": [
    "json"
  ]
}

Work backwards from a target take-home to the gross salary that produces it, under the Nigeria Tax Act 2025 (2026 tax year). This is the question employers and contractors actually ask — "what must I pay for them to clear ₦500,000 a month" — and it cannot be answered by applying a rate, because PAYE is banded. Returns the required gross with the full band-by-band working and the statutory source. Informational only — verify with the tax authority. Interactive version: https://zaleso.com/ng/net-salary

{
  "type": "object",
  "properties": {
    "takeHome": {
      "type": "number",
      "description": "Target take-home (net) pay in naira, after PAYE and deductions."
    },
    "period": {
      "type": "string",
      "enum": [
        "monthly",
        "annual"
      ],
      "description": "Whether takeHome is monthly or annual. Default monthly."
    },
    "includePension": {
      "type": "boolean",
      "description": "Deduct the 8% employee pension contribution (PRA 2014). Default true."
    },
    "includeNhf": {
      "type": "boolean",
      "description": "Deduct the 2.5% National Housing Fund contribution — voluntary for private-sector employees since 2023. Default false."
    },
    "rentPaidAnnual": {
      "type": "number",
      "description": "Annual rent actually paid, in naira. Unlocks rent relief (20% of rent, capped at ₦500,000)."
    }
  },
  "required": [
    "takeHome"
  ]
}

Add Nigerian VAT to a net amount, or extract the VAT already contained in a VAT-inclusive amount. Uses the verified statutory rate from the data layer and returns it with its source and effective date — never an assumed rate. Informational only — verify with the tax authority. Interactive version: https://zaleso.com/invoice

{
  "type": "object",
  "properties": {
    "amount": {
      "type": "number",
      "description": "The amount in naira."
    },
    "mode": {
      "type": "string",
      "enum": [
        "add",
        "extract"
      ],
      "description": "'add' treats amount as VAT-exclusive and adds VAT; 'extract' treats it as VAT-inclusive and backs the VAT out. Default add."
    },
    "year": {
      "type": "integer",
      "description": "Tax year. Default 2026."
    }
  },
  "required": [
    "amount"
  ]
}

Compute invoice totals from line items: per-line totals, subtotal, an optional discount, optional tax (the verified Nigeria VAT preset or any rate you name), a deposit already paid, and the balance due. Country-agnostic. The interactive version also produces the PDF: https://zaleso.com/invoice

{
  "type": "object",
  "properties": {
    "lines": {
      "type": "array",
      "maxItems": 20,
      "description": "Line items, up to 20.",
      "items": {
        "type": "object",
        "properties": {
          "description": {
            "type": "string"
          },
          "quantity": {
            "type": "number"
          },
          "unitPrice": {
            "type": "number"
          }
        },
        "required": [
          "description",
          "quantity",
          "unitPrice"
        ]
      }
    },
    "currency": {
      "type": "string",
      "enum": [
        "NGN",
        "USD",
        "EUR",
        "GBP"
      ],
      "description": "Default NGN. Affects formatting only."
    },
    "vat": {
      "type": "boolean",
      "description": "Charge the verified Nigeria VAT rate. Only when the seller is VAT-registered in Nigeria. Default false."
    },
    "taxRate": {
      "type": "number",
      "description": "Tax rate as a percentage (20 for 20%), for jurisdictions other than Nigeria. Takes precedence over vat."
    },
    "taxLabel": {
      "type": "string",
      "description": "Label for the tax row, e.g. \"GST\". Default \"Tax\"."
    },
    "discountPercent": {
      "type": "number",
      "description": "Discount as a percentage, 0-100."
    },
    "discountAmount": {
      "type": "number",
      "description": "Discount as a flat amount."
    },
    "deposit": {
      "type": "number",
      "description": "Amount already paid."
    }
  },
  "required": [
    "lines"
  ]
}

Spell a monetary amount in words, the way a cheque or an invoice requires — "Four Thousand and Fifty Naira and Seventy-Five Kobo Only". Supports NGN, USD, EUR and GBP with the correct major and minor unit names. It is the row that goes above the signature line on the invoices at https://zaleso.com/invoice

{
  "type": "object",
  "properties": {
    "amount": {
      "type": "number",
      "description": "The amount, e.g. 4050.75"
    },
    "currency": {
      "type": "string",
      "enum": [
        "NGN",
        "USD",
        "EUR",
        "GBP"
      ],
      "description": "Default NGN"
    }
  },
  "required": [
    "amount"
  ]
}

Encode text to Base64, or decode Base64 back to text. UTF-8 throughout, so accented text, emoji, Arabic, Devanagari and CJK survive the round trip — the naive btoa/atob version does not. Interactive version: https://zaleso.com/base64

{
  "type": "object",
  "properties": {
    "text": {
      "type": "string",
      "description": "The text to encode, or the Base64 to decode."
    },
    "mode": {
      "type": "string",
      "enum": [
        "encode",
        "decode"
      ],
      "description": "Default encode"
    }
  },
  "required": [
    "text"
  ]
}

Convert between US dollars and Nigerian naira at the Central Bank of Nigeria's official NFEM rate — the volume-weighted average CBN publishes, not a parallel-market figure. Returns the converted amount with the rate, the trading date it applies to, and the CBN source. Interactive version: https://zaleso.com/ng/fx

{
  "type": "object",
  "properties": {
    "amount": {
      "type": "number",
      "description": "The amount to convert."
    },
    "from": {
      "type": "string",
      "enum": [
        "USD",
        "NGN"
      ],
      "description": "The currency the amount is in. Default USD."
    }
  },
  "required": [
    "amount"
  ]
}