PDF Image Optimizer
FreeOptimize and compress images inside PDF files
About PDF Image Optimizer
Images are usually what make a PDF heavy, and a document stuffed with high-resolution photos can balloon to an unwieldy size. Recompressing each image by hand is impractical. This optimizer shrinks the images inside your PDF in one pass.
Upload your file and the tool compresses the embedded images to trim the overall size, then returns the lighter PDF. It runs in your browser, is free, and adds no watermark or signup. Your document is processed only for this optimization, so the content remains yours.
Common uses
- Shrinking an image-heavy PDF so it emails more easily
- Reducing the size of a scanned document for upload
- Lightening a photo-filled brochure without rebuilding it
- Cutting storage space used by large illustrated reports
How to use
- 1
Upload your file
Click the upload area or drag & drop your file. Supports APPLICATION/PDF. Up to 50 MB.
- 2
Click "Process — PDF Image Optimizer"
Click the process button. Your file is converted instantly on our secure servers.
- 3
Download your result
Preview and download your converted file. No watermarks, no quality loss, no expiry.
Why ToolHub?
- 100% Free — no account needed
- Works in your browser — no software required
- Instant results
- Secure and private
- No data stored
- Simple to use
FAQ
Will the images lose quality?
Compression trades some image quality for smaller size. Moderate settings usually keep images looking fine for screen and standard printing.
Does it touch the text?
No, the tool targets embedded images. Text and vector elements are left as they are.
How much smaller will my file get?
It depends on how many high-resolution images the PDF contains. Image-heavy files see the biggest savings; text-only files see little change.
Can I use PDF Image Optimizer on mobile?
Yes — ToolHub is fully responsive and works on iPhone, Android, tablets and all modern browsers. No app install needed.