Few things are more frustrating than hitting send and watching your email bounce because the PDF attachment is too big. Most providers cap attachments at around 25 MB, and many web forms allow far less. The good news: most oversized PDFs can be shrunk dramatically in seconds.
Why PDFs exceed email limits
The usual culprit is images. Scanned pages and embedded photos are often stored at far higher resolution than a screen needs. A handful of phone photos inside a PDF can push it past 30 MB on their own, even if the document is only a few pages.
Know your limits
- Gmail / Outlook: ~25 MB per email.
- Many web forms: 2–10 MB.
- Government / banking portals: sometimes as low as 1–2 MB.
Step-by-step
- Open the PDF compressor and drop your file in.
- Choose medium compression to start.
- Check the new size and confirm the text is still readable.
- If it's still too big, try high compression or split the document.
Everything runs in your browser, so confidential attachments are never uploaded to a server.
If compression isn't enough
When even high compression leaves the file too large, split the PDF into smaller parts and send them across two emails, or remove pages you don't need. For documents built from photos, compress the images before assembling the PDF.
Tip: Always keep the original. Compress a copy so you can re-do it at a gentler setting if the text ends up too soft.
How small can you go?
Image-heavy PDFs routinely drop 50–90%. A 28 MB scan can often land under 4 MB at medium settings — easily emailable, and still perfectly legible on screen. Pure-text PDFs are already small, so don't expect big gains there.
Frequently asked questions
Will compressing blur my text?
No — text stays sharp because it's vector data. Only embedded images are downsampled.
Is it safe for private documents?
Yes — compression happens locally in your browser; nothing is uploaded.
What if my PDF is still over the limit?
Split it into parts, or remove pages you don't need before compressing.
