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Every tool you need to work with PDFs in one place

Our tools are 100% FREE and easy to use! Merge, split, compress, convert, rotate, and watermark your PDFs with just a few clicks — no uploads, your files never leave this device.

Everything runs locally in your browser using open-source PDF engines. Files are processed on your device and are never sent to a server.

Split PDF by File Size — Free

Email won't take your 80MB PDF? Split it into smaller chunks that fit attachment limits. Pick a max size — 5MB, 10MB, 20MB or 25MB for Gmail — and PDFZippy packs your pages into email-friendly files automatically.

How to use split pdf by file size

Open your PDF in the Split by Size tool.
Choose the maximum chunk size (25MB works for Gmail).
Click “Split by Size” — pages are packed in order, each chunk under your limit.
Download the ZIP with all chunks, ready to attach.

Why use PDFZippy for this

Beat email attachment limits (Gmail 25MB and others)
Pages packed in order — nothing gets scrambled
Every chunk guaranteed under your size limit
One ZIP download with all parts
Free, no signup, files never uploaded

Tips for best results

Gmail's limit is 25MB — choose that option for Gmail-safe chunks.
Name the parts clearly (part1, part2…) so recipients reassemble them easily.
If one page alone exceeds the limit (huge scans), that chunk will be larger — compress first if needed.
For a fixed page count instead, use Split PDF.

Frequently asked questions

How do I split a PDF into smaller files for email?

Open Split by Size, pick your max chunk size (e.g. 25MB for Gmail) and click the button. Your PDF is divided into parts that each fit the limit, downloaded as a ZIP.

Will the page order be preserved?

Yes — pages are packed in their original order across the chunks.

What if a single page is bigger than my limit?

That chunk will exceed the limit since a page can't be divided. Compress the PDF first if you hit this.

How many files will I get?

It depends on your PDF and the limit — the tool tells you the count before downloading.