diff --git a/.gitignore b/.gitignore
index 61ead86..28d0a93 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,2 @@
 /vendor
+/output
diff --git a/AGENTS.md b/AGENTS.md
new file mode 100644
index 0000000..d6d5214
--- /dev/null
+++ b/AGENTS.md
@@ -0,0 +1,70 @@
+# Repository Guidelines
+
+## Project Structure & Module Organization
+
+This is a small PHP Composer project for generating PDF files with `tecnickcom/tc-lib-pdf`.
+
+- `src/` contains executable PDF scripts.
+- `src/hello-world.php` is a minimal PDF example.
+- `src/dotted.php` generates A4 dotted technical drawing paper.
+- `output/` contains generated PDFs such as `output/dotted.pdf`; it is ignored by Git.
+- `vendor/` contains Composer dependencies and generated font assets; it is ignored by Git.
+- `README.md` documents setup and user-facing commands.
+
+There is currently no dedicated `tests/` directory.
+
+## Build, Test, and Development Commands
+
+Install project dependencies:
+
+```powershell
+composer install
+```
+
+Generate font definitions required by `tc-lib-pdf-font`:
+
+```powershell
+cd vendor\tecnickcom\tc-lib-pdf-font\util
+composer install
+cd ..
+composer install
+cd util
+php bulk_convert.php
+```
+
+Check PHP syntax:
+
+```powershell
+php -l src\hello-world.php
+php -l src\dotted.php
+```
+
+Generate dotted paper from CLI:
+
+```powershell
+php src\dotted.php --dot-size=0.4 --space=5
+```
+
+Open via web server:
+
+```text
+http://localhost/pdfcreator/src/dotted.php?dot-size=0.4&space=5
+```
+
+## Coding Style & Naming Conventions
+
+Use PHP 8 syntax and keep scripts under the `Igor\Pdfcreator` namespace. Prefer clear helper functions for parameter parsing, validation, and PDF drawing. Use four-space indentation, strict readable variable names like `$pageWidth`, `$tableBox`, and `$dotSize`, and kebab-case filenames for browser-facing scripts, for example `hello-world.php`.
+
+Avoid writing generated files into tracked paths. Keep `vendor/` and `output/` uncommitted.
+
+## Testing Guidelines
+
+No automated test suite is configured yet. For changes, at minimum run `php -l` on modified PHP files and execute the affected script from CLI. For `src/dotted.php`, verify valid parameters generate `output/dotted.pdf` and invalid values such as `--dot-size=0` or `--space=1` fail with an error.
+
+## Commit & Pull Request Guidelines
+
+Git history was not available in this environment, so use concise imperative commit messages such as `Add dotted paper generator` or `Update font setup docs`. Pull requests should describe the change, list commands run, mention generated output paths, and include screenshots or PDFs when visual PDF layout changes.
+
+## Security & Configuration Tips
+
+Do not commit generated PDFs, Composer vendor files, or local configuration. Keep web scripts free of output before PDF headers. Validate all CLI and query parameters before using them in PDF generation.
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..8766898
--- /dev/null
+++ b/README.md
@@ -0,0 +1,179 @@
+# pdfCreator
+
+Projekt na generovanie PDF suborov pomocou `tecnickcom/tc-lib-pdf`.
+
+## Slovensky
+
+### Inicializacia po cistom clone
+
+Po novom clone repozitara alebo po zmazani adresara `vendor` najprv nainstaluj hlavne Composer zavislosti:
+
+```powershell
+composer install
+```
+
+Samotny `composer install` nevygeneruje PDF font definicie, ktore `tc-lib-pdf-font` nacitava pri renderovani. Bez nich moze aplikacia spadnut napr. s chybou:
+
+```text
+unable to read file: helvetica.json
+```
+
+Fonty vygeneruj cez utilitny balicek v `vendor/tecnickcom/tc-lib-pdf-font`:
+
+```powershell
+cd vendor\tecnickcom\tc-lib-pdf-font\util
+composer install
+
+cd ..
+composer install
+
+cd util
+php bulk_convert.php
+```
+
+Po uspesnom behu by mal existovat napr. subor:
+
+```text
+vendor\tecnickcom\tc-lib-pdf-font\target\fonts\core\helvetica.json
+```
+
+### Skripty
+
+Hello world PDF:
+
+```powershell
+php src\hello-world.php
+```
+
+Bodkovany papier pre technicke nacrtky:
+
+```powershell
+php src\dotted.php
+```
+
+Volitelne parametre bodkovaneho papiera:
+
+```powershell
+php src\dotted.php --dot-size=0.4 --space=5
+```
+
+Vystup z CLI sa ulozi do:
+
+```text
+output\dotted.pdf
+```
+
+### Web spustenie
+
+Hello world PDF:
+
+```text
+http://localhost/pdfcreator/src/hello-world.php
+```
+
+Bodkovany papier inline v prehliadaci:
+
+```text
+http://localhost/pdfcreator/src/dotted.php?dot-size=0.4&space=5
+```
+
+### Overenie
+
+Syntax PHP skriptov:
+
+```powershell
+php -l src\hello-world.php
+php -l src\dotted.php
+```
+
+### Poznamka k `vendor` a `output`
+
+Adresare `vendor` a `output` su ignorovane v Gite. Ak sa `vendor` zmaze alebo sa projekt inicializuje na inom stroji, treba instalaciu zavislosti a generovanie fontov zopakovat.
+
+## English
+
+### Fresh Repository Setup
+
+After cloning the repository, or after deleting the `vendor` directory, install the main Composer dependencies first:
+
+```powershell
+composer install
+```
+
+The root `composer install` does not generate the PDF font definition files used by `tc-lib-pdf-font` at runtime. Without them, the application may fail with an error such as:
+
+```text
+unable to read file: helvetica.json
+```
+
+Generate the fonts through the utility package inside `vendor/tecnickcom/tc-lib-pdf-font`:
+
+```powershell
+cd vendor\tecnickcom\tc-lib-pdf-font\util
+composer install
+
+cd ..
+composer install
+
+cd util
+php bulk_convert.php
+```
+
+After a successful run, this file should exist:
+
+```text
+vendor\tecnickcom\tc-lib-pdf-font\target\fonts\core\helvetica.json
+```
+
+### Scripts
+
+Hello world PDF:
+
+```powershell
+php src\hello-world.php
+```
+
+Dotted paper for technical sketches:
+
+```powershell
+php src\dotted.php
+```
+
+Optional dotted paper parameters:
+
+```powershell
+php src\dotted.php --dot-size=0.4 --space=5
+```
+
+CLI output is saved to:
+
+```text
+output\dotted.pdf
+```
+
+### Web Usage
+
+Hello world PDF:
+
+```text
+http://localhost/pdfcreator/src/hello-world.php
+```
+
+Dotted paper rendered inline in the browser:
+
+```text
+http://localhost/pdfcreator/src/dotted.php?dot-size=0.4&space=5
+```
+
+### Verification
+
+Check PHP syntax:
+
+```powershell
+php -l src\hello-world.php
+php -l src\dotted.php
+```
+
+### Notes About `vendor` and `output`
+
+The `vendor` and `output` directories are ignored by Git. If `vendor` is deleted or the project is initialized on another machine, repeat the dependency installation and font generation steps.
diff --git a/output/dotted.pdf b/output/dotted.pdf
new file mode 100644
index 0000000..02f23e6
Binary files /dev/null and b/output/dotted.pdf differ
diff --git a/src/dotted.php b/src/dotted.php
new file mode 100644
index 0000000..2351303
--- /dev/null
+++ b/src/dotted.php
@@ -0,0 +1,287 @@
+<?php
+
+namespace Igor\Pdfcreator;
+
+require __DIR__ . '/../vendor/autoload.php';
+
+\define('K_PATH_FONTS', \realpath(__DIR__ . '/../vendor/tecnickcom/tc-lib-pdf-font/target/fonts'));
+
+$pdf = new \Com\Tecnick\Pdf\Tcpdf();
+
+/**
+ * @return array{dot-size: float, space: float}
+ */
+function readParams(): array
+{
+    if (PHP_SAPI === 'cli') {
+        $options = \getopt('', ['dot-size:', 'space:']);
+
+        return [
+            'dot-size' => parseFloatParam($options['dot-size'] ?? null, 0.35),
+            'space' => parseFloatParam($options['space'] ?? null, 5.0),
+        ];
+    }
+
+    return [
+        'dot-size' => parseFloatParam($_GET['dot-size'] ?? null, 0.35),
+        'space' => parseFloatParam($_GET['space'] ?? null, 5.0),
+    ];
+}
+
+function parseFloatParam(mixed $value, float $default): float
+{
+    if ($value === null || $value === '') {
+        return $default;
+    }
+
+    if (\is_array($value)) {
+        fail('Parameter value must be a single number.');
+    }
+
+    $normalized = \str_replace(',', '.', (string) $value);
+    if (! \is_numeric($normalized)) {
+        fail('Parameter value must be numeric.');
+    }
+
+    return (float) $normalized;
+}
+
+/**
+ * @param array{dot-size: float, space: float} $params
+ */
+function validateParams(array $params): void
+{
+    if ($params['dot-size'] <= 0 || $params['dot-size'] > 2) {
+        fail('Invalid --dot-size value. Use a number greater than 0 and at most 2 mm.');
+    }
+
+    if ($params['space'] < 2 || $params['space'] > 20) {
+        fail('Invalid --space value. Use a number from 2 to 20 mm.');
+    }
+}
+
+function fail(string $message): never
+{
+    if (PHP_SAPI === 'cli') {
+        \fwrite(STDERR, 'Error: ' . $message . PHP_EOL);
+        exit(1);
+    }
+
+    \http_response_code(400);
+    \header('Content-Type: text/plain; charset=utf-8');
+    echo 'Error: ' . $message;
+    exit;
+}
+
+function getLineStyle(float $width, string $color): array
+{
+    return [
+        'lineWidth' => $width,
+        'lineCap' => 'butt',
+        'lineJoin' => 'miter',
+        'dashArray' => [],
+        'dashPhase' => 0,
+        'lineColor' => $color,
+    ];
+}
+
+function getFillStyle(string $color): array
+{
+    return [
+        'all' => [
+            'lineWidth' => 0,
+            'lineCap' => 'butt',
+            'lineJoin' => 'miter',
+            'dashArray' => [],
+            'dashPhase' => 0,
+            'lineColor' => $color,
+            'fillColor' => $color,
+        ],
+    ];
+}
+
+/**
+ * @param array{x: float, y: float, width: float, height: float} $tableBox
+ */
+function drawDotGrid(
+    \Com\Tecnick\Pdf\Tcpdf $pdf,
+    float $left,
+    float $top,
+    float $right,
+    float $bottom,
+    float $dotSize,
+    float $space,
+    array $tableBox
+): void {
+    $radius = $dotSize / 2.0;
+    $dotStyle = getFillStyle('rgb(145,145,145)');
+
+    for ($y = $top; $y <= $bottom; $y += $space) {
+        for ($x = $left; $x <= $right; $x += $space) {
+            $insideTable = (
+                $x >= $tableBox['x']
+                && $x <= ($tableBox['x'] + $tableBox['width'])
+                && $y >= $tableBox['y']
+                && $y <= ($tableBox['y'] + $tableBox['height'])
+            );
+
+            if ($insideTable) {
+                continue;
+            }
+
+            $pdf->page->addContent($pdf->graph->getCircle($x, $y, $radius, 0, 360, 'F', $dotStyle));
+        }
+    }
+}
+
+function drawFrame(\Com\Tecnick\Pdf\Tcpdf $pdf, float $pageWidth, float $pageHeight): void
+{
+    $outerMargin = 5.0;
+
+    $pdf->page->addContent(
+        $pdf->graph->getRect(
+            $outerMargin,
+            $outerMargin,
+            $pageWidth - (2 * $outerMargin),
+            $pageHeight - (2 * $outerMargin),
+            'D',
+            ['all' => getLineStyle(0.18, 'black')]
+        )
+    );
+}
+
+/**
+ * @param array{x: float, y: float, width: float, height: float} $tableBox
+ */
+function drawTitleBlock(\Com\Tecnick\Pdf\Tcpdf $pdf, array $tableBox): void
+{
+    assertFontIsAvailable();
+
+    $font = $pdf->font->insert($pdf->pon, 'helvetica', '', 7.0, 0.0, 1.0);
+    $pdf->page->addContent($font['out']);
+    $pdf->page->addContent($pdf->color->getPdfColor('black'));
+
+    $lineStyle = getLineStyle(0.16, 'black');
+    $rowHeight = $tableBox['height'] / 4.0;
+    $labelWidth = 28.0;
+
+    $pdf->page->addContent(
+        $pdf->graph->getRect($tableBox['x'], $tableBox['y'], $tableBox['width'], $tableBox['height'], 'D', [
+            'all' => $lineStyle,
+        ])
+    );
+
+    for ($row = 1; $row < 4; ++$row) {
+        $lineY = $tableBox['y'] + ($row * $rowHeight);
+        $pdf->page->addContent(
+            $pdf->graph->getLine($tableBox['x'], $lineY, $tableBox['x'] + $tableBox['width'], $lineY, $lineStyle)
+        );
+    }
+
+    $pdf->page->addContent(
+        $pdf->graph->getLine(
+            $tableBox['x'] + $labelWidth,
+            $tableBox['y'],
+            $tableBox['x'] + $labelWidth,
+            $tableBox['y'] + $tableBox['height'],
+            $lineStyle
+        )
+    );
+
+    $labels = ['Názov projektu', 'Autor', 'Dátum', 'Revízia'];
+    foreach ($labels as $index => $label) {
+        $pdf->page->addContent(
+            $pdf->getTextCell(
+                $label,
+                $tableBox['x'] + 2.0,
+                $tableBox['y'] + ($index * $rowHeight) + 2.7,
+                $labelWidth - 4.0,
+                4.0,
+                valign: 'C',
+                halign: 'L',
+                drawcell: false
+            )
+        );
+    }
+}
+
+function assertFontIsAvailable(): void
+{
+    $fontFile = K_PATH_FONTS . DIRECTORY_SEPARATOR . 'core' . DIRECTORY_SEPARATOR . 'helvetica.json';
+    if (! \is_readable($fontFile)) {
+        fail(
+            'Missing font file helvetica.json. Generate fonts first: '
+            . 'cd vendor\\tecnickcom\\tc-lib-pdf-font\\util && composer install && cd .. && composer install '
+            . '&& cd util && php bulk_convert.php'
+        );
+    }
+}
+
+/**
+ * @param array{dot-size: float, space: float} $params
+ */
+function buildPdf(\Com\Tecnick\Pdf\Tcpdf $pdf, array $params): string
+{
+    $pageWidth = 210.0;
+    $pageHeight = 297.0;
+    $innerMargin = 10.0;
+    $tableBox = [
+        'width' => 80.0,
+        'height' => 40.0,
+        'x' => $pageWidth - $innerMargin - 80.0,
+        'y' => $pageHeight - $innerMargin - 40.0,
+    ];
+
+    $pdf->setCreator('pdfCreator');
+    $pdf->setAuthor('');
+    $pdf->setSubject('Dotted technical drawing paper');
+    $pdf->setTitle('Dotted technical drawing paper');
+    $pdf->setKeywords('PDF dotted grid technical drawing floor plan');
+    $pdf->setPDFFilename('dotted.pdf');
+
+    $pdf->addPage(['format' => 'A4', 'orientation' => 'P']);
+
+    drawFrame($pdf, $pageWidth, $pageHeight);
+    drawDotGrid(
+        $pdf,
+        $innerMargin,
+        $innerMargin,
+        $pageWidth - $innerMargin,
+        $pageHeight - $innerMargin,
+        $params['dot-size'],
+        $params['space'],
+        $tableBox
+    );
+    drawTitleBlock($pdf, $tableBox);
+
+    return $pdf->getOutPDFString();
+}
+
+function outputPdf(\Com\Tecnick\Pdf\Tcpdf $pdf, string $rawPdf): void
+{
+    if (PHP_SAPI !== 'cli') {
+        if (\ob_get_length() !== false && \ob_get_length() > 0) {
+            \ob_clean();
+        }
+
+        $pdf->renderPDF($rawPdf);
+        return;
+    }
+
+    $outputDir = \dirname(__DIR__) . DIRECTORY_SEPARATOR . 'output';
+    if (! \is_dir($outputDir) && ! \mkdir($outputDir, 0775, true) && ! \is_dir($outputDir)) {
+        fail('Unable to create output directory: ' . $outputDir);
+    }
+
+    $outputFile = $outputDir . DIRECTORY_SEPARATOR . 'dotted.pdf';
+    if (\file_put_contents($outputFile, $rawPdf) === false) {
+        fail('Unable to write PDF file: ' . $outputFile);
+    }
+
+    echo 'PDF generated: ' . $outputFile . PHP_EOL;
+}
+
+$params = readParams();
+validateParams($params);
+$rawPdf = buildPdf($pdf, $params);
+outputPdf($pdf, $rawPdf);
diff --git a/src/hello-world.php b/src/hello-world.php
new file mode 100644
index 0000000..bdc5943
--- /dev/null
+++ b/src/hello-world.php
@@ -0,0 +1,27 @@
+<?php
+
+namespace Igor\Pdfcreator;
+require __DIR__.'/../vendor/autoload.php';
+
+\define('K_PATH_FONTS', \realpath(__DIR__ . '/../vendor/tecnickcom/tc-lib-pdf-font/target/fonts'));
+
+$pdf = new \Com\Tecnick\Pdf\Tcpdf();
+
+$bfont = $pdf->font->insert($pdf->pon, 'helvetica', '', 12);
+
+$page = $pdf->addPage();
+
+$pdf->page->addContent($bfont['out']);
+
+$html = '<h1>Hello, PDF!</h1><p>Generated with tc-lib-pdf.</p>';
+
+$pdf->addHTMLCell(
+    html:   $html,
+    posx:   15,   // mm from left page edge
+    posy:   20,   // mm from top page edge
+    width:  180,  // mm wide (0 = to right margin)
+);
+
+$rawpdf = $pdf->getOutPDFString();
+
+$pdf->renderPDF($rawpdf);
\ No newline at end of file