PDF Attachment Too Large? Here's What to Do
If your email client says the attachment is too large, you can compress or split the PDF in minutes. Follow these steps to get it sent.
Step 1: Confirm the current size
Check the file size in your file manager. Some email clients show only the limit, not the exact size.
If the file is close to the limit, plan for extra overhead by choosing a lower target.
Step 2: Compress with a preset
Open Email-ready and choose Gmail 25 MB or Outlook 20 MB presets. PDFThin will optimize first without visible changes. If the PDF is scan-heavy, smart quality can reduce images while keeping text clear.Step 3: Try a smaller custom limit
If the attachment still fails, set a custom target like 18-20 MB. This compensates for email encoding overhead.
Lower limits are also useful when sending multiple attachments in the same message.
Step 4: Split as a fallback
When a single file cannot fit, use Split by size to generate multiple parts. Attach the parts in order and tell recipients how many parts to expect.FAQ
Why does a file under the limit still fail?
Encoding overhead can push the message size over the limit. Try a smaller target size.
Is splitting always better?
Compression keeps a single file when possible. Split only when the limit cannot be met.
Can I send the ZIP instead?
Some providers block ZIPs. PDF parts are usually safer for email delivery.
Keep delivery smooth
Include a short note
If you split a file, include a brief note in the email to reduce confusion.
Mention the number of parts and the order to open them.
Use clear subject lines
If sending multiple emails, label subjects with Part 1, Part 2, and so on.
This helps recipients keep the set together.