How are the parts named?

Each part is numbered in order inside the downloaded ZIP, so reading them in sequence is straightforward.

What if a single page is larger than the limit?

That page becomes its own part. A page cannot be divided, so the limit is a target that one oversized page may exceed.

Is page order preserved?

Yes. Pages are packed in their original order, so reading straight through the parts matches the original document.

How do I put the parts back together?

Use the Merge PDF tool and add the parts in order.

Split PDF by File Size

Split a PDF into parts no larger than a chosen size

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About this tool

Splits a PDF into several smaller PDFs, each no larger than the size you set. Pages are measured individually and packed in order, so reading order is preserved across the parts. Built for email attachment limits and upload caps that reject a single large file.

Key features

Free and unlimited
No account, no watermark and no cap on how many files you process.
Private by design
Files are sent over HTTPS and removed from the server after processing.
Works in the browser
Nothing to install — it runs on desktop, tablet and phone alike.
Fast
Processing happens server-side and usually finishes in a few seconds.

Frequently asked questions

How are the parts named?: Each part is numbered in order inside the downloaded ZIP, so reading them in sequence is straightforward.
What if a single page is larger than the limit?: That page becomes its own part. A page cannot be divided, so the limit is a target that one oversized page may exceed.
Is page order preserved?: Yes. Pages are packed in their original order, so reading straight through the parts matches the original document.
How do I put the parts back together?: Use the Merge PDF tool and add the parts in order.

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