# Compress a PDF to 150 KB

> Shrink a PDF under 150 KB in your browser. Pre-set to a safe 146 KB target. Honest when the file can’t stay readable at that size.

Canonical: https://mypdf.space/compress-pdf/150kb
Last updated: 2026-10-26

## Answer

Use the compressor below, already set to 146 KB so it passes a 150 KB limit either way the portal counts. It tries a lossless rebuild first, then lowers resolution until the file fits. **One page stays sharp**; **about four to five plain pages** usually fit at the lowest setting.

## What fits comfortably

One page at good quality, or two plain text pages.

## What is squeezed

About four to five plain pages at the lowest setting.

## Context

150 KB shows up on some government and university upload fields that sit between the common 100 KB and 200 KB caps.

For a single certificate scan, 150 KB usually leaves more resolution headroom than 100 KB, so small stamps and seals stay clearer.

## Tips

- **Crop to the document edges** with [Crop pages](https://mypdf.space/tools/crop-pages) before compressing.
- **Remove blank pages** with [Delete pages](https://mypdf.space/tools/delete-pages).
- **Start from the original**, not a file that was already compressed.

## FAQ

### How do I compress a PDF to 150 KB?

Use this page — the compressor is pre-set to 146 KB. Drop the file, press Compress, check the preview, then download.

### Why 146 KB instead of 150 KB?

Some portals count 1 KB as 1,000 bytes. 146 KB in the tool stays under 150,000 bytes either way.

### Does this upload my PDF?

No. Compression runs in your browser.

## Related

- [Compress PDF hub](https://mypdf.space/compress-pdf)
- [Compress tool](https://mypdf.space/tools/compress)