Merge pull request #88 from iib0011/compression

feat: pdf compression
2025-11-15 01:24:03 +01:00 · 2025-04-03 02:04:12 +00:00
parent a0ebd9c3b6 391ab06a85
commit 5edfbc2820
13 changed files with 6569 additions and 121 deletions
--- a/.idea/workspace.xml
+++ b/.idea/workspace.xml
@@ -4,23 +4,11 @@
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+    <list default="true" id="b30e2810-c4c1-4aad-b134-794e52cc1c7d" name="Changes" comment="fix: path">
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-      <change beforePath="$PROJECT_DIR$/src/tools/index.ts" beforeDir="false" afterPath="$PROJECT_DIR$/src/tools/index.ts" afterDir="false" />
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+      <change beforePath="$PROJECT_DIR$/src/pages/tools/pdf/compress-pdf/index.tsx" beforeDir="false" afterPath="$PROJECT_DIR$/src/pages/tools/pdf/compress-pdf/index.tsx" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/pages/tools/pdf/compress-pdf/service.ts" beforeDir="false" afterPath="$PROJECT_DIR$/src/pages/tools/pdf/compress-pdf/service.ts" afterDir="false" />
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+        <entry key="$PROJECT_DIR$" value="chesterkxng" />
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@@ -134,6 +122,13 @@
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    <option name="myId2Visible">
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@@ -226,14 +221,14 @@
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      <recent name="C:\Users\Ibrahima\IdeaProjects\omni-tools\@types" />
      <recent name="C:\Users\Ibrahima\IdeaProjects\omni-tools\public\assets" />
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-      <option name="project" value="LOCAL" />
-      <updated>1740680778110</updated>
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+      <workItem from="1743458576265" duration="13083000" />
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@@ -737,79 +721,87 @@
      <option name="project" value="LOCAL" />
      <updated>1743355166426</updated>
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-    <task id="LOCAL-00176" summary="chore: tool description">
+    <task id="LOCAL-00176" summary="fix: gif speed">
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+      <created>1743385388051</created>
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-      <updated>1743560690571</updated>
+      <updated>1743385388051</updated>
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+    <task id="LOCAL-00177" summary="fix: tsc">
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+      <created>1743385467178</created>
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-      <updated>1743565606951</updated>
+      <updated>1743385467178</updated>
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+    <task id="LOCAL-00178" summary="fix: background color">
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-      <updated>1743566704552</updated>
+      <updated>1743385898871</updated>
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+    <task id="LOCAL-00179" summary="docs: github trendings">
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+      <created>1743459110471</created>
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-      <updated>1743567906528</updated>
+      <updated>1743459110471</updated>
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+    <task id="LOCAL-00180" summary="docs: optimize">
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+      <updated>1743459205311</updated>
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+    <task id="LOCAL-00181" summary="fix: stars button width for 1k+ 😊">
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-      <updated>1743569711302</updated>
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+    <task id="LOCAL-00182" summary="feat: compress pdf">
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@@ -872,16 +863,17 @@
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-    <MESSAGE value="feat: svg change colors" />
-    <option name="LAST_COMMIT_MESSAGE" value="feat: svg change colors" />
+    <MESSAGE value="fix: gif speed" />
+    <MESSAGE value="fix: tsc" />
+    <MESSAGE value="fix: background color" />
+    <MESSAGE value="docs: github trendings" />
+    <MESSAGE value="docs: optimize" />
+    <MESSAGE value="fix: stars button width for 1k+ " />
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+    <MESSAGE value="refactor: compress pdf" />
+    <MESSAGE value="refactor: lib" />
+    <MESSAGE value="fix: path" />
+    <option name="LAST_COMMIT_MESSAGE" value="fix: path" />
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--- a/package-lock.json
+++ b/package-lock.json
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@@ -2038,6 +2039,12 @@
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--- a/package.json
+++ b/package.json
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    "@mui/icons-material": "^5.15.20",
    "@mui/material": "^5.15.20",
    "@playwright/test": "^1.45.0",
--- a/public/gs.js
+++ b/public/gs.js
@@ -0,0 +1,39 @@
+// This is a placeholder file for the actual Ghostscript WASM implementation
+// In a real implementation, this would be the compiled Ghostscript WASM module
+
+// You would need to download the actual Ghostscript WASM files from:
+// https://github.com/ochachacha/ps2pdf-wasm or compile it yourself
+
+// This simulates the Module loading process that would occur with the real WASM file
+(function () {
+  // Simulate WASM loading
+  console.log('Loading Ghostscript WASM module...');
+
+  // Expose a simulated Module to the window
+  window.Module = window.Module || {};
+
+  // Simulate filesystem
+  window.FS = {
+    writeFile: function (name, data) {
+      console.log(`[Simulated] Writing file: ${name}`);
+      return true;
+    },
+    readFile: function (name, options) {
+      console.log(`[Simulated] Reading file: ${name}`);
+      // Return a sample Uint8Array that would represent a PDF
+      return new Uint8Array(10);
+    }
+  };
+
+  // Mark module as initialized after a delay to simulate loading
+  setTimeout(function () {
+    window.Module.calledRun = true;
+    console.log('Ghostscript WASM module loaded');
+
+    // Add callMain method for direct calling
+    window.Module.callMain = function (args) {
+      console.log('[Simulated] Running Ghostscript with args:', args);
+      // In a real implementation, this would execute the WASM module with the given arguments
+    };
+  }, 1000);
+})();
--- a/src/lib/ghostscript/background-worker.js
+++ b/src/lib/ghostscript/background-worker.js
@@ -0,0 +1,89 @@
+function loadScript() {
+  import('./gs-worker.js');
+}
+
+var Module;
+
+function _GSPS2PDF(dataStruct, responseCallback) {
+  const compressionLevel = dataStruct.compressionLevel || 'medium';
+
+  // Set PDF settings based on compression level
+  let pdfSettings;
+  switch (compressionLevel) {
+    case 'low':
+      pdfSettings = '/printer'; // Higher quality, less compression
+      break;
+    case 'medium':
+      pdfSettings = '/ebook'; // Medium quality and compression
+      break;
+    case 'high':
+      pdfSettings = '/screen'; // Lower quality, higher compression
+      break;
+    default:
+      pdfSettings = '/ebook'; // Default to medium
+  }
+  // first download the ps data
+  var xhr = new XMLHttpRequest();
+  xhr.open('GET', dataStruct.psDataURL);
+  xhr.responseType = 'arraybuffer';
+  xhr.onload = function () {
+    console.log('onload');
+    // release the URL
+    self.URL.revokeObjectURL(dataStruct.psDataURL);
+    //set up EMScripten environment
+    Module = {
+      preRun: [
+        function () {
+          self.Module.FS.writeFile('input.pdf', new Uint8Array(xhr.response));
+        }
+      ],
+      postRun: [
+        function () {
+          var uarray = self.Module.FS.readFile('output.pdf', {
+            encoding: 'binary'
+          });
+          var blob = new Blob([uarray], { type: 'application/octet-stream' });
+          var pdfDataURL = self.URL.createObjectURL(blob);
+          responseCallback({ pdfDataURL: pdfDataURL, url: dataStruct.url });
+        }
+      ],
+      arguments: [
+        '-sDEVICE=pdfwrite',
+        '-dCompatibilityLevel=1.4',
+        `-dPDFSETTINGS=${pdfSettings}`,
+        '-DNOPAUSE',
+        '-dQUIET',
+        '-dBATCH',
+        '-sOutputFile=output.pdf',
+        'input.pdf'
+      ],
+      print: function (text) {},
+      printErr: function (text) {},
+      totalDependencies: 0,
+      noExitRuntime: 1
+    };
+    // Module.setStatus("Loading Ghostscript...");
+    if (!self.Module) {
+      self.Module = Module;
+      loadScript();
+    } else {
+      self.Module['calledRun'] = false;
+      self.Module['postRun'] = Module.postRun;
+      self.Module['preRun'] = Module.preRun;
+      self.Module.callMain();
+    }
+  };
+  xhr.send();
+}
+
+self.addEventListener('message', function ({ data: e }) {
+  console.log('message', e);
+  // e.data contains the message sent to the worker.
+  if (e.target !== 'wasm') {
+    return;
+  }
+  console.log('Message received from main script', e.data);
+  _GSPS2PDF(e.data, ({ pdfDataURL }) => self.postMessage(pdfDataURL));
+});
+
+console.log('Worker ready');
--- a/src/lib/ghostscript/gs-worker.js
+++ b/src/lib/ghostscript/gs-worker.js
--- a/src/lib/ghostscript/worker-init.js
+++ b/src/lib/ghostscript/worker-init.js
@@ -0,0 +1,15 @@
+export async function compressWithGhostScript(dataStruct) {
+  const worker = new Worker(
+    new URL('./background-worker.js', import.meta.url),
+    { type: 'module' }
+  );
+  worker.postMessage({ data: dataStruct, target: 'wasm' });
+  return new Promise((resolve, reject) => {
+    const listener = (e) => {
+      resolve(e.data);
+      worker.removeEventListener('message', listener);
+      setTimeout(() => worker.terminate(), 0);
+    };
+    worker.addEventListener('message', listener);
+  });
+}
--- a/src/pages/tools/pdf/compress-pdf/index.tsx
+++ b/src/pages/tools/pdf/compress-pdf/index.tsx
@@ -0,0 +1,222 @@
+import { Box, Typography } from '@mui/material';
+import React, { useContext, useEffect, useState } from 'react';
+import ToolContent from '@components/ToolContent';
+import { ToolComponentProps } from '@tools/defineTool';
+import ToolPdfInput from '@components/input/ToolPdfInput';
+import ToolFileResult from '@components/result/ToolFileResult';
+import { CardExampleType } from '@components/examples/ToolExamples';
+import { PDFDocument } from 'pdf-lib';
+import { CompressionLevel, InitialValuesType } from './types';
+import { compressPdf } from './service';
+import SimpleRadio from '@components/options/SimpleRadio';
+import { CustomSnackBarContext } from '../../../../contexts/CustomSnackBarContext';
+
+const initialValues: InitialValuesType = {
+  compressionLevel: 'medium'
+};
+
+const exampleCards: CardExampleType<InitialValuesType>[] = [
+  {
+    title: 'Low Compression',
+    description: 'Slightly reduce file size with minimal quality loss',
+    sampleText: '',
+    sampleResult: '',
+    sampleOptions: {
+      compressionLevel: 'low'
+    }
+  },
+  {
+    title: 'Medium Compression',
+    description: 'Balance between file size and quality',
+    sampleText: '',
+    sampleResult: '',
+    sampleOptions: {
+      compressionLevel: 'medium'
+    }
+  },
+  {
+    title: 'High Compression',
+    description: 'Maximum file size reduction with some quality loss',
+    sampleText: '',
+    sampleResult: '',
+    sampleOptions: {
+      compressionLevel: 'high'
+    }
+  }
+];
+
+export default function CompressPdf({
+  title,
+  longDescription
+}: ToolComponentProps) {
+  const [input, setInput] = useState<File | null>(null);
+  const [result, setResult] = useState<File | null>(null);
+  const [resultSize, setResultSize] = useState<string>('');
+  const [isProcessing, setIsProcessing] = useState<boolean>(false);
+  const [fileInfo, setFileInfo] = useState<{
+    size: string;
+    pages: number;
+  } | null>(null);
+  const { showSnackBar } = useContext(CustomSnackBarContext);
+
+  // Get the PDF info when a file is uploaded
+  useEffect(() => {
+    const getPdfInfo = async () => {
+      if (!input) {
+        setFileInfo(null);
+        return;
+      }
+
+      try {
+        const arrayBuffer = await input.arrayBuffer();
+        const pdf = await PDFDocument.load(arrayBuffer);
+        const pages = pdf.getPageCount();
+        const size = formatFileSize(input.size);
+
+        setFileInfo({ size, pages });
+      } catch (error) {
+        console.error('Error getting PDF info:', error);
+        setFileInfo(null);
+        showSnackBar(
+          'Error reading PDF file. Please make sure it is a valid PDF.',
+          'error'
+        );
+      }
+    };
+
+    getPdfInfo();
+  }, [input]);
+
+  const formatFileSize = (bytes: number): string => {
+    if (bytes === 0) return '0 Bytes';
+
+    const k = 1024;
+    const sizes = ['Bytes', 'KB', 'MB', 'GB'];
+    const i = Math.floor(Math.log(bytes) / Math.log(k));
+
+    return parseFloat((bytes / Math.pow(k, i)).toFixed(2)) + ' ' + sizes[i];
+  };
+
+  const compute = async (values: InitialValuesType, input: File | null) => {
+    if (!input) return;
+
+    try {
+      setIsProcessing(true);
+      const compressedPdf = await compressPdf(input, values);
+      setResult(compressedPdf);
+
+      // Log compression results
+      const compressionRatio = (compressedPdf.size / input.size) * 100;
+      console.log(`Compression Ratio: ${compressionRatio.toFixed(2)}%`);
+      setResultSize(formatFileSize(compressedPdf.size));
+    } catch (error) {
+      console.error('Error compressing PDF:', error);
+      showSnackBar(
+        `Failed to compress PDF: ${
+          error instanceof Error ? error.message : String(error)
+        }`,
+        'error'
+      );
+      setResult(null);
+    } finally {
+      setIsProcessing(false);
+    }
+  };
+
+  const compressionOptions: {
+    value: CompressionLevel;
+    label: string;
+    description: string;
+  }[] = [
+    {
+      value: 'low',
+      label: 'Low Compression',
+      description: 'Slightly reduce file size with minimal quality loss'
+    },
+    {
+      value: 'medium',
+      label: 'Medium Compression',
+      description: 'Balance between file size and quality'
+    },
+    {
+      value: 'high',
+      label: 'High Compression',
+      description: 'Maximum file size reduction with some quality loss'
+    }
+  ];
+
+  return (
+    <ToolContent
+      title={title}
+      input={input}
+      setInput={setInput}
+      initialValues={initialValues}
+      compute={compute}
+      inputComponent={
+        <ToolPdfInput
+          value={input}
+          onChange={setInput}
+          accept={['application/pdf']}
+          title={'Input PDF'}
+        />
+      }
+      resultComponent={
+        <ToolFileResult
+          title={'Compressed PDF'}
+          value={result}
+          extension={'pdf'}
+          loading={isProcessing}
+          loadingText={'Compressing PDF'}
+        />
+      }
+      getGroups={({ values, updateField }) => [
+        {
+          title: 'Compression Settings',
+          component: (
+            <Box>
+              <Box>
+                <Typography variant="subtitle2" sx={{ mb: 1 }}>
+                  Compression Level
+                </Typography>
+
+                {compressionOptions.map((option) => (
+                  <SimpleRadio
+                    key={option.value}
+                    title={option.label}
+                    description={option.description}
+                    checked={values.compressionLevel === option.value}
+                    onClick={() => {
+                      updateField('compressionLevel', option.value);
+                    }}
+                  />
+                ))}
+              </Box>
+              {fileInfo && (
+                <Box
+                  sx={{
+                    mt: 2,
+                    p: 2,
+                    bgcolor: 'background.paper',
+                    borderRadius: 1
+                  }}
+                >
+                  <Typography variant="body2">
+                    File size: <strong>{fileInfo.size}</strong>
+                  </Typography>
+                  <Typography variant="body2">
+                    Pages: <strong>{fileInfo.pages}</strong>
+                  </Typography>
+                  {resultSize && (
+                    <Typography variant="body2">
+                      Compressed file size: <strong>{resultSize}</strong>
+                    </Typography>
+                  )}
+                </Box>
+              )}
+            </Box>
+          )
+        }
+      ]}
+    />
+  );
+}
--- a/src/pages/tools/pdf/compress-pdf/meta.ts
+++ b/src/pages/tools/pdf/compress-pdf/meta.ts
@@ -0,0 +1,28 @@
+import { defineTool } from '@tools/defineTool';
+import { lazy } from 'react';
+
+export const tool = defineTool('pdf', {
+  name: 'Compress PDF',
+  path: 'compress-pdf',
+  icon: 'material-symbols:compress',
+  description:
+    'Reduce PDF file size while maintaining quality using Ghostscript',
+  shortDescription: 'Compress PDF files securely in your browser',
+  keywords: [
+    'pdf',
+    'compress',
+    'reduce',
+    'size',
+    'optimize',
+    'shrink',
+    'file size',
+    'ghostscript',
+    'secure',
+    'private',
+    'browser',
+    'webassembly'
+  ],
+  longDescription:
+    'Compress PDF files securely in your browser using Ghostscript. Your files never leave your device, ensuring complete privacy while reducing file sizes for email sharing, uploading to websites, or saving storage space. Powered by WebAssembly technology.',
+  component: lazy(() => import('./index'))
+});
--- a/src/pages/tools/pdf/compress-pdf/service.test.ts
+++ b/src/pages/tools/pdf/compress-pdf/service.test.ts
@@ -0,0 +1,107 @@
+import { describe, it, expect, vi } from 'vitest';
+import { compressPdf } from './service';
+import { CompressionLevel } from './types';
+
+// Mock the mupdf module
+vi.mock('mupdf', () => {
+  return {
+    Document: {
+      openDocument: vi.fn(() => ({
+        countPages: vi.fn(() => 2),
+        loadPage: vi.fn(() => ({}))
+      }))
+    },
+    PDFWriter: vi.fn(() => ({
+      addPage: vi.fn(),
+      asBuffer: vi.fn(() => Buffer.from('test'))
+    }))
+  };
+});
+
+// Mock the pdf-lib module
+vi.mock('pdf-lib', () => {
+  return {
+    PDFDocument: {
+      load: vi.fn(() => ({
+        getPageCount: vi.fn(() => 2)
+      }))
+    }
+  };
+});
+
+describe('compressPdf', () => {
+  it('should compress a PDF file with low compression', async () => {
+    // Create a mock File
+    const mockFile = new File(['test'], 'test.pdf', {
+      type: 'application/pdf'
+    });
+
+    // Mock arrayBuffer method
+    mockFile.arrayBuffer = vi.fn().mockResolvedValue(new ArrayBuffer(4));
+
+    // Call the function with low compression
+    const result = await compressPdf(mockFile, {
+      compressionLevel: 'low' as CompressionLevel
+    });
+
+    // Check the result
+    expect(result).toBeInstanceOf(File);
+    expect(result.name).toBe('test-compressed.pdf');
+    expect(result.type).toBe('application/pdf');
+  });
+
+  it('should compress a PDF file with medium compression', async () => {
+    // Create a mock File
+    const mockFile = new File(['test'], 'test.pdf', {
+      type: 'application/pdf'
+    });
+
+    // Mock arrayBuffer method
+    mockFile.arrayBuffer = vi.fn().mockResolvedValue(new ArrayBuffer(4));
+
+    // Call the function with medium compression
+    const result = await compressPdf(mockFile, {
+      compressionLevel: 'medium' as CompressionLevel
+    });
+
+    // Check the result
+    expect(result).toBeInstanceOf(File);
+    expect(result.name).toBe('test-compressed.pdf');
+    expect(result.type).toBe('application/pdf');
+  });
+
+  it('should compress a PDF file with high compression', async () => {
+    // Create a mock File
+    const mockFile = new File(['test'], 'test.pdf', {
+      type: 'application/pdf'
+    });
+
+    // Mock arrayBuffer method
+    mockFile.arrayBuffer = vi.fn().mockResolvedValue(new ArrayBuffer(4));
+
+    // Call the function with high compression
+    const result = await compressPdf(mockFile, {
+      compressionLevel: 'high' as CompressionLevel
+    });
+
+    // Check the result
+    expect(result).toBeInstanceOf(File);
+    expect(result.name).toBe('test-compressed.pdf');
+    expect(result.type).toBe('application/pdf');
+  });
+
+  it('should handle errors during compression', async () => {
+    // Create a mock File
+    const mockFile = new File(['test'], 'test.pdf', {
+      type: 'application/pdf'
+    });
+
+    // Mock arrayBuffer method to throw an error
+    mockFile.arrayBuffer = vi.fn().mockRejectedValue(new Error('Test error'));
+
+    // Check that the function throws an error
+    await expect(
+      compressPdf(mockFile, { compressionLevel: 'medium' as CompressionLevel })
+    ).rejects.toThrow('Failed to compress PDF: Test error');
+  });
+});
--- a/src/pages/tools/pdf/compress-pdf/service.ts
+++ b/src/pages/tools/pdf/compress-pdf/service.ts
@@ -0,0 +1,44 @@
+import { InitialValuesType } from './types';
+import { compressWithGhostScript } from '../../../../lib/ghostscript/worker-init';
+
+/**
+ * Compresses a PDF file using either Ghostscript WASM (preferred)
+ * or falls back to pdf-lib if WASM fails
+ *
+ * @param pdfFile - The PDF file to compress
+ * @param options - Compression options including compression level
+ * @returns A Promise that resolves to a compressed PDF File
+ */
+export async function compressPdf(
+  pdfFile: File,
+  options: InitialValuesType
+): Promise<File> {
+  // Check if file is a PDF
+  if (pdfFile.type !== 'application/pdf') {
+    throw new Error('The provided file is not a PDF');
+  }
+
+  const dataObject = {
+    psDataURL: URL.createObjectURL(pdfFile),
+    compressionLevel: options.compressionLevel
+  };
+  const compressedFileUrl: string = await compressWithGhostScript(dataObject);
+  return await loadPDFData(compressedFileUrl, pdfFile.name);
+}
+
+function loadPDFData(url: string, filename: string): Promise<File> {
+  return new Promise((resolve) => {
+    const xhr = new XMLHttpRequest();
+    xhr.open('GET', url);
+    xhr.responseType = 'arraybuffer';
+    xhr.onload = function () {
+      window.URL.revokeObjectURL(url);
+      const blob = new Blob([xhr.response], { type: 'application/pdf' });
+      const newFile = new File([blob], filename, {
+        type: 'application/pdf'
+      });
+      resolve(newFile);
+    };
+    xhr.send();
+  });
+}
--- a/src/pages/tools/pdf/compress-pdf/types.ts
+++ b/src/pages/tools/pdf/compress-pdf/types.ts
@@ -0,0 +1,5 @@
+export type CompressionLevel = 'low' | 'medium' | 'high';
+
+export type InitialValuesType = {
+  compressionLevel: CompressionLevel;
+};
--- a/src/pages/tools/pdf/index.ts
+++ b/src/pages/tools/pdf/index.ts
@@ -1,5 +1,10 @@
 import { tool as pdfRotatePdf } from './rotate-pdf/meta';
 import { meta as splitPdfMeta } from './split-pdf/meta';
+import { tool as compressPdfTool } from './compress-pdf/meta';
 import { DefinedTool } from '@tools/defineTool';

-export const pdfTools: DefinedTool[] = [splitPdfMeta, pdfRotatePdf];
+export const pdfTools: DefinedTool[] = [
+  splitPdfMeta,
+  pdfRotatePdf,
+  compressPdfTool
+];