ToolBoxPDF Image Optimizer
Shrink the pictures in a PDF to reduce its file size.
Free · No signup · Files stay on your device
or drop a file here
How to use PDF Image Optimizer
- 1Click the Select button and choose your file, or drag and drop.
- 2Fill in the options shown on the page.
- 3Press the PDF Image Optimizer button.
- 4Download your result.
Your files stay private
Your file is processed on your own device. It is never uploaded to our servers.
Frequently asked questions
Is PDF Image Optimizer free?
Yes. ToolBox is 100% free. No signup, no watermark, no daily limit.
Are my files uploaded to a server?
No. All work happens inside your browser on your own device. Your files never leave your phone or computer.
Does it work on mobile?
Yes, on Android, iPhone, tablets and desktop. Very large files can be slow on older phones.
What are the limits of PDF Image Optimizer?
Pages are saved as pictures, so the text in the result can no longer be selected.
More Optimize PDF tools
Compress PDF
Make a PDF smaller so it is easier to email and upload.
PDF to Grayscale
Convert colour pages to black, white and grey to save ink.
Crop PDF
Cut the same margin from every edge of every page.
PDF Page Size Converter
Resize all pages to A4, A3 or Letter.
PDF File Size Checker
See the file size, page count and version of a PDF.