Compress PDF to 400 KB
Shrink PDF file size while keeping the best quality possible.
Runs in your browser — files never leave your device
or drop files here
How to compress a PDF to 400 KB
A 400 KB limit leaves room for a few clear scanned pages, such as a marksheet with its back side or a two-page certificate. This page is set to 400 KB and keeps as much quality as the limit allows.
Add the PDF.
Check the size box shows 400 KB, or type another limit.
Click Compress PDF and download the file that fits.
Compress PDF to 400 KB FAQ
Usually two to four pages stay clearly readable. If yours has more, remove the pages the portal doesn't need first.
Yes. Merge them with Merge PDF, then compress the merged file here so it fits as a whole.
No. The tool runs entirely in your browser, so your files are processed on your own device and never leave it.
Yes. Every PDFCraftly tool is free, with no sign-up, no watermark and no email required.
Guides
- PDF Too Large to Email? 5 Practical FixesEmail attachment limits are usually 20–25 MB. Here are five practical ways to send a large PDF: compress it, remove pages, split it by size and more.
- How to Compress a PDF Without Losing QualityMake a PDF smaller for email, WhatsApp and upload portals. Learn what makes PDFs big, which compression level to pick, and how to keep text sharp.
- How to Make Documents Fit Nepal's Online Form Size LimitsNepal's passport portal accepts scans of 300 KB or less. Here's how to scan, compress and check documents, photos and signatures so uploads go through.
More optimize tools
- Compress JPGNewShrink photos and signatures to a size you choose, like 50 KB.
- Increase PDF SizeNewMake a PDF bigger in KB to meet a portal's minimum file size.
- Increase JPG SizeNewMake a photo or signature bigger in KB to meet a form's minimum size.
- OCR PDFTurn scanned PDFs into searchable, selectable text.
- Remove AnnotationsStrip comments, highlights and markups from a PDF.