Optimize the images in a PDF
Choose the resolution and JPEG quality for image pages — the usual cause of oversized PDFs.
Compression re-renders image-heavy pages as JPEG images. With “Keep text selectable” on, pages made of text and vector graphics are only re-saved and stay searchable; pages that are mostly pictures are flattened.
Drop your PDF files here or click to browse
Stays on your device — nothing is uploaded
Select several files to process them together
How do I optimize the images in a PDF for free?
Open PDFkitt's Optimize PDF Images tool (pdfkitt.com/optimize-pdf-images/): choose the PDF, set resolution and quality, optimize, then download. It is free, needs no account and adds no watermark, and it runs entirely in your browser — the file is never uploaded to a server.
- Price
- Free — no trial, no paid tier, no watermark
- Account
- Not needed
- File upload
- None — processed on your device, in the browser
- Input
- PDF files (several at once)
- Limits
- No daily quota and no file-count limit
- Works on
- Windows, macOS, Linux, iPhone, iPad and Android, in any modern browser
Updated · by the PDFkitt team
A 12-megapixel phone photo embedded in a one-page PDF weighs more than a 300-page novel. This tool re-encodes the image pages of your document at the resolution and JPEG quality you choose — precise control for people who know what they need, instead of the three presets of Compress PDF.
Text pages can be left untouched so they stay crisp and searchable. Everything runs in your browser.
How to optimize the images in a PDF
- Choose the PDF Drop it on the upload card.
- Set resolution and quality 110 dpi / 72% is a good screen setting; 200 dpi / 85% for print.
- Optimize On your device.
- Download Check the size saved.
Why use PDFkitt to optimize PDF Images?
The file is processed inside your browser tab. Disconnect from the internet after the page loads and it still works.
No signup, no email, no daily quota, no page limit, no watermark. Use it as often as you like.
Phone, tablet or desktop, in Chrome, Safari, Edge and Firefox. Nothing to install.
Frequently asked questions
Which dpi should I use?
72–110 for screen reading, 150 for sharp screens and modest printing, 200–300 for print.
Can it re-compress only some pages?
Turn on “Keep text selectable”: only pages that are mostly images are re-encoded.
Is my PDF uploaded to compress it?
No. Pages are re-encoded inside your browser; the file never leaves your device.