QBMFX Compress PDF with a size target
Prepare a compact sharing copy by rendering PDF pages at a chosen resolution and image quality. Try a custom target such as 100 KB, 200 KB or 1 MB, then check the actual result size and readability. Detailed multipage scans may not fit a very small limit, and compression can make an already efficient text document larger rather than smaller.
Choose your files and review the settings.
Keep originals and inspect the result before printing. File changes clear previous downloads. Heavy image and OCR work can take longer on a phone.
Using Compress PDF with a size target
- Choose a PDF and keep the original.
- Set resolution, image quality and an optional target KB limit.
- Create the compressed copy and check its actual size and readable details.
Behind the result
Each page is rendered and encoded into a new image-based PDF. Lower resolution and lossy image quality can reduce bytes at the cost of fine detail and the original interactive structure.
Free tools for everyday work
Book centers, photocopy shops, freelancers and developers can use this workspace without a paid plan or account. Files are processed locally. Prepare website resources from offline setup before disconnecting; Urdu/OCR also needs the separate pack above.
The Windows app currently includes the original four tools. These new Book Center tools are available on the website; app and extension updates will be separate releases.
Answers and practical details
Small target sizes
Some documents cannot fit below a target without unacceptable quality loss. Reduce page count or image dimensions when appropriate and compare the final download with the receiving service’s limit.
Price and account requirements
This website tool is 100% free. No login, subscription or paid conversion tier is required. Your device supplies the processing memory.
Files and privacy
Input documents and generated results are handled locally. They are not sent to a QBMFX conversion API or stored in a customer database. Website hosting and advertising can still make separate network requests.
Offline preparation
Prepare the website resources from Help while connected, then test the required tool offline. OCR and Urdu text tools also need their optional language or font resources prepared first. Browser storage can be removed by the browser or by you.
Windows app and Edge extension
The existing installed app and extension contain the original four PDF tools. These new Book Center tools belong to the website release; they will need a separate installed-package update.