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<!DOCTYPE html>
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<head>
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    <title>API Catalog | Developer APIs for Data, Automation & Processing</title>
    <meta name="description" content="Comprehensive catalog of developer APIs for data normalization, validation, automation, document processing, and infrastructure. Modern APIs built for developers.">
    <meta name="keywords" content="developer APIs, data normalization API, JSON validation API, PDF API, automation API, REST API catalog">
    <meta name="author" content="Precision Solutions Tech">
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<body>
<div class="container">

<nav class="global-nav" aria-label="Main"><a href="index.html">Home</a><a href="faq.html">FAQ</a><a href="index.html#normalization">Normalization APIs</a><a href="index.html#validation">Validation APIs</a><a href="index.html#comparison">Comparison APIs</a><a href="blog/">Blog</a></nav>

<header>
    <h1>Modern Developer APIs for Data, Automation & Infrastructure</h1>
    <p class="subtitle">
        A growing catalog of developer-focused APIs for data normalization, transformation,
        aggregation, validation, and document processing — built for scalable systems and clean integrations.
    </p>
</header>

<div class="section" id="normalization">
    <h2>Data Normalization APIs</h2>
    <div class="grid">
        <div class="card">
            <a href="apis/event-listing-normalization.html">Event Listing Normalization</a>
            <p>Normalize event data from multiple platforms into a canonical schema.</p>
        </div>

        <div class="card">
            <a href="apis/calendar-event-normalization.html">Calendar Event Normalization</a>
            <p>Unify calendar event payloads across providers into a consistent structure.</p>
        </div>

        <div class="card">
            <a href="apis/job-posting-normalization.html">Job Posting Normalization</a>
            <p>Transform job listing data from multiple sources into a standard schema.</p>
        </div>

        <div class="card">
            <a href="apis/shipping-tracking-normalization.html">Shipping & Tracking Normalization</a>
            <p>Standardize shipment tracking data across carriers.</p>
        </div>

        <div class="card">
            <a href="apis/retail-data-normalization.html">Retail Data Normalization</a>
            <p>Normalize product and retail listing data for comparison and analytics.</p>
        </div>

        <div class="card">
            <a href="apis/social-media-data-normalization.html">Social Media Data Normalization</a>
            <p>Unify social media content payloads into a structured format.</p>
        </div>

        <div class="card">
            <a href="apis/financial-invoice-normalization.html">Financial Invoice & Receipt Normalization</a>
            <p>Normalize invoice and receipt data from QuickBooks, Stripe, Xero, Shopify, and 40+ vendors into one canonical schema.</p>
        </div>
    </div>
</div>

<div class="section" id="validation">
    <h2>Validation & Developer Utilities</h2>
    <div class="grid">
        <div class="card">
            <a href="apis/json-schema-validator.html">JSON Schema Validator</a>
            <p>Validate JSON payloads against schema definitions.</p>
        </div>

        <div class="card">
            <a href="apis/json-diff-checker.html">JSON Diff Checker</a>
            <p>Compare JSON objects and detect structural differences.</p>
        </div>

        <div class="card">
            <a href="apis/json-payload-consistency-checker.html">JSON Payload Consistency Checker</a>
            <p>Analyze JSON structure consistency across datasets.</p>
        </div>

        <div class="card">
            <a href="apis/html-to-markdown.html">HTML to Markdown Converter</a>
            <p>Convert HTML content into GitHub Flavored Markdown.</p>
        </div>

        <div class="card">
            <a href="apis/universal-data-format-converter.html">JSON to CSV, XML, Excel Converter API</a>
            <p>Convert JSON to CSV, CSV to JSON, XML to JSON, Excel to YAML &amp; more. 13+ formats, 20MB max.</p>
        </div>

        <div class="card">
            <a href="apis/url-signature-presigner.html">URL Signature Presigner</a>
            <p>Generate secure, signed URLs for controlled resource access.</p>
        </div>
    </div>
</div>

<div class="section" id="comparison">
    <h2>Document & Processing APIs</h2>
    <div class="grid">
        <div class="card">
            <a href="apis/pdf-compression.html">PDF Compression</a>
            <p>Optimize PDF files with lossless compression.</p>
        </div>

        <div class="card">
            <a href="apis/pdf-table-extraction.html">PDF Table Extraction</a>
            <p>Extract structured table data from PDF documents.</p>
        </div>

        <div class="card">
            <a href="apis/pii-detection-redaction.html">PII Detection & Redaction</a>
            <p>Detect and redact sensitive information in text data.</p>
        </div>

        <div class="card">
            <a href="apis/qr-code-generator.html">QR Code Generator</a>
            <p>Create advanced QR codes for applications and automation.</p>
        </div>
    </div>
</div>

<div class="section">
    <h2>Infrastructure & Engineering</h2>
    <div class="grid">
        <div class="card">
            <a href="apis/adaptive-rate-limit-calculator.html">Adaptive Rate Limit Response Calculator</a>
            <p>Analyze API rate limits and calculate adaptive retry strategies.</p>
        </div>

        <div class="card">
            <a href="apis/http-error-root-trigger-analyzer.html">HTTP Error Root Trigger Analyzer</a>
            <p>Identify underlying causes of API failures and HTTP errors.</p>
        </div>

        <div class="card">
            <a href="apis/api-error-status-normalization.html">API Error & Status Normalization</a>
            <p>Normalize diverse API error responses into a consistent taxonomy.</p>
        </div>
    </div>
</div>

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