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PDF Compress

Compress images and export as a lightweight PDF. Adjust quality, preview compression results, and download an optimized PDF file.

Drag & drop images or click to upload

Supports JPG, PNG, WebP

Image Compressor to PDF: Compress Images and Export as Compact PDF

Large image files can be challenging to share and store, especially when dealing with multiple photos or scanned documents. Our free online Image Compressor to PDF tool lets you upload multiple images, adjust the compression quality, and export them as a single compact PDF file. This is perfect for reducing file sizes while maintaining a professional document format.

The compression works by re-encoding your images through the HTML5 Canvas API at your chosen quality level. The quality slider ranges from 0.1 (maximum compression, smallest file) to 1.0 (minimal compression, best quality). For most use cases, a quality setting between 0.4 and 0.6 offers an excellent balance between file size reduction and visual quality.

The tool shows you detailed size information for each image: the original file size and the compressed size after processing. After generating the PDF, you can see the total original size versus the PDF output size, along with the percentage of space saved. This transparency helps you find the optimal quality setting for your specific needs.

All processing happens entirely in your browser using the Canvas API and jsPDF library. Your images are never uploaded to any server, ensuring complete privacy. The tool is ideal for compressing scanned documents, reducing photo collection sizes for email attachments, creating lightweight PDF reports with embedded images, and archiving photos in a space-efficient format.

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FAQ

How does the image compression work?+
Images are re-encoded through the HTML5 Canvas API as JPEG at your chosen quality level. Lower quality means more compression and smaller files, while higher quality preserves more detail. The compressed images are then combined into a PDF using jsPDF.
What quality setting should I use?+
For general documents and photos, 0.4-0.6 offers a good balance. For text-heavy scanned documents, 0.3-0.5 works well. For photos where quality is important, use 0.7-0.9. Preview the results and adjust as needed.
Are my images uploaded to a server?+
No. All compression and PDF generation happens locally in your browser. Your images never leave your device, ensuring complete privacy and security.
What is the maximum file size I can compress?+
There is no server-side limit since processing happens in your browser. The practical limit depends on your device memory. Most modern devices can handle dozens of high-resolution images without issues.
Can I compress already compressed images further?+
Yes, but with diminishing returns. Re-compressing an already compressed JPEG will reduce file size further but may introduce visible artifacts. For best results, start with the original uncompressed images when possible.

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