Compress PDF guide
How to Reduce a PDF to a File-Size Limit
Reduce a suitable image-heavy PDF toward a portal limit while treating 100KB, 200KB, or 500KB as a maximum rather than a guaranteed exact result.
Compress the PDF
- Choose one PDF and start with Recommended compression.
- Compare the estimated or completed size with the original before choosing a stronger mode.
- Check the downloaded byte size and zoom into the smallest important text before submitting it.
Treat the target as a measurable limit
A request such as 50KB, 100KB, 200KB, 500KB, or 1MB normally means the output must not exceed that value. Compress PDF cannot make every source fit every limit while preserving readable content.
Check the destination's accepted format, dimensions, page count, and whether it reports decimal KB or binary KiB. Leave a small margin below the stated maximum when another system measures bytes differently.
- Record every upload requirement, not only KB or MB.
- Reject an unreadable result even when its byte size passes.
- Measure the downloaded result rather than estimating it.
FAQ
Can stronger compression remove searchable or interactive PDF features?
Yes. Stronger modes can rasterize pages, which may remove searchable text, links, forms, accessibility information, annotations, and signature validity.
What is the current input limit for Compress PDF?
PDF; One PDF ≤50 MiB, ≤100 pages.
What does Compress PDF create?
recommended keeps structure where possible; stronger modes render pages as images and can lose text/features; One PDF ≤150 MiB.