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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.
Is there a maximum PDF size?
Only your device's memory limits it. Most phones handle a few hundred MB.
Shrink oversized PDFs so they fit email attachments and upload limits. PDFZippy compresses your PDF locally in your browser — pick a target size like 1MB and download a smaller file in seconds. Most PDFs shrink dramatically on the first pass — try it and check the before/after sizes.
How to compress a PDF
Open your PDF in the Compress PDF tool.
Drag the quality slider: left for a smaller file, right for sharper pages.
Click “Compress” — your browser re-renders each page at the quality you chose.
Download the smaller PDF and check the new size.
Why use PDFZippy for this
Target specific sizes — shrink a PDF to 1MB, 500KB and more
Smart image optimization that protects text sharpness
Before/after size shown so you see exactly what you saved
No uploads — compression runs on your device
Free, no watermarks, no signup
Tips for best results
Need to hit a size limit (like 1MB for email)? Start near 50% quality and nudge the slider until the result fits.
Compress a copy first if you need the original quality archived somewhere.
Image-heavy PDFs shrink the most — text-only files are already small.
If email still rejects the file, try one step stronger compression.
Frequently asked questions
How do I compress a PDF to 1MB?
Open the file in Compress PDF and drag the quality slider — left for the smallest file, right for sharper pages. To hit an email size limit, start around 50–60% and adjust until the result fits; the tool shows the exact before/after sizes.
How much smaller can my PDF get?
It depends on the file — image-heavy PDFs often shrink 70–90%, while text-only PDFs are already small and may barely change. The tool shows you the exact before/after sizes.
Will compressing make my PDF blurry?
Text stays sharp because compression targets images, not text. At aggressive settings images may lose some detail — preview the result and pick the balance you like.
Why is my PDF so large in the first place?
Usually uncompressed images or scanned pages. Each scanned page can be several MB; compression re-encodes those images efficiently.
Is there a maximum file size I can compress?
The limit is your device's memory rather than a fixed number. Most phones handle files up to a few hundred MB; desktops handle more.
Do I need to upload my PDF to compress it?
No. Compression runs entirely in your browser — your file never leaves your device.