QBMFX Split PDF by file size
Prepare smaller PDF files for a portal or email attachment limit by splitting at page boundaries. Set the maximum output size and let the tool measure actual serialized page groups. The output preserves complete pages, so a single page that already exceeds the limit needs compression before splitting can satisfy that limit. Book centers, freelancers and developers can use this free local workspace without a login or paid conversion API. Keep the original and inspect the downloaded result.
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 Split PDF by file size
- Choose one PDF and set the maximum file size.
- Create measured page-group outputs.
- Download the files and check each size before submission.
Behind the result
Page groups are serialized and measured before they are accepted as output. A page is never cut into fragments merely to fit the byte limit.
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. The expanded tools are available on the website; app and extension updates will be separate releases.
Answers and practical details
Size guarantees
Accepted outputs are measured against the requested byte limit. Compress an oversized source page or increase the limit when no valid group can be created.
Price and accounts
This website workflow is free without a login, subscription or paid conversion tier. Your browser supplies the processing memory and CPU.
Local file handling
Selected documents and generated results are processed on your device. QBMFX does not upload them to a conversion server or save them in a customer database. Hosting, advertising and opening external links are separate network activity.
Offline preparation
Prepare the supported website resources while connected, wait for the ready status and test the workflow before disconnecting. OCR, advanced PDF processing or fonts can need an additional local resource pack. Browser cleanup can remove saved resources.
Installed app availability
The Microsoft Store app and Edge package currently contain the original four tools. Website additions require a separate installed-package release and do not update those packages automatically.