Compress Images Inside PDF
Selectively compress, resize, and optimize images embedded in your PDF files without affecting text quality.
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About This Tool
The Compress Images Inside PDF tool is a specialized utility designed to reduce the file size of PDF documents by focusing specifically on the embedded graphics. Unlike generic PDF compressors that might degrade text clarity, this tool analyzes every page, identifies raster images (JPG, PNG), and recompresses them based on your settings. If you need to convert the format entirely, you might want to try PDF to Text instead. This method ensures that vector text remains crisp while heavy images are optimized for web or email sharing. All processing happens locally in your browser, ensuring your documents never leave your device.
1. Upload your PDF: Drag and drop your file into the upload box or click to select from your device. If you simply want to turn a photo into a document first, check out JPG to PDF.
2. Analyze: The tool will automatically scan the document and display thumbnails of pages containing images.
3. Adjust Settings: Use the sidebar to select a compression preset (High, Balanced, Low). You can fine-tune the quality percentage slider to find the perfect balance between file size and image clarity.
4. Compress & Download: Click the "Compress Images" button. Watch the progress as images are optimized, then download your significantly smaller PDF file.
Is my document secure?
Yes. This tool operates entirely within your web browser using JavaScript libraries. Your PDF file is never uploaded to a server, ensuring complete privacy for sensitive documents.
Does this affect text sharpness?
No. We only identify and compress raster images (photos, scans) inside the PDF. Text layers, vector graphics, and fonts are left untouched. If your document is just a scan and you want to fix how it looks, you might use our Photo Enhancer on the source images first.
Can I compress only specific images?
Currently, the tool applies settings globally or based on image size thresholds (e.g., only compress images larger than 500KB). We are working on a feature to select individual images for the next update. For now, you can Crop PDF to isolate areas or simply Blur Images before embedding if privacy is the concern.