# Compress PDF to 300 KB

> Compress a PDF to 300 KB or less for short scanned documents and 300 KB upload caps. Processed in an isolated cloud sandbox and deleted automatically. Free, no sign-up, no watermark.

URL: https://www.converterrr.com/compress-pdf-to-300kb

Shrink a PDF to 300 KB or less for short scanned documents and 300 KB upload caps.

API: `POST /api/v1/jobs` with `"operation": "compress", "target_size": "300kb"` (paid plans).

## How to compress a PDF to 300 KB

1. **Add your PDF.** Drop one or more PDF files onto the compressor above, paste them, or click to browse.
2. **300 KB is preset.** The target is already set to 300 KB, and each file is compressed to land at or just under it. You can switch to another size or a percentage to reduce by.
3. **Compress.** Click Compress. The PDF is processed in an isolated cloud sandbox and deleted afterwards.
4. **Check and download.** Check the new size, then download each file or all of them as a ZIP.

## Good to know

- 300 KB fits a few scanned pages at readable quality, or a much longer text-only document.
- That's about 30 KB per page for a 10-page document (text pages fine, scans get blurry). Text stays selectable at any size; it's the scans and photos that get downsampled.
- 300 KB here means 300,000 bytes, so the result also fits forms that count 1 KB as 1,024 bytes.
- PDF files are compressed in an isolated cloud sandbox created just for your job; the upload and the result are deleted automatically afterwards.

## What fits in 300 KB

Spread across the pages, 300 KB gives each page this much room. Text costs very little; scans and photos cost the most.

| Pages | Budget per page | What survives |
| --- | --- | --- |
| 1 page | 300 KB | Scans at good resolution |
| 5 pages | 60 KB | Text pages fine, scans get blurry |
| 10 pages | 30 KB | Text pages fine, scans get blurry |
| 25 pages | 12 KB | Text-only pages only |
| 100 pages | 3 KB | Too tight: split the PDF |

_Rough guide. Text-only pages are often just a few KB each; a scanned page is mostly image data._

## What 300 KB is typically for

- Two- or three-page scans
- Supporting documents on admissions and application portals
- Signed contracts and forms

Limits vary by site and change over time; check the exact number where you're uploading.

## How PDF gets smaller

Downsamples and recompresses images, subsets and compresses fonts, and removes duplicate data.

[Compress PDF by quality level instead](https://www.converterrr.com/compress-pdf)

## Neighbouring sizes

- [Compress PDF to 100 KB](https://www.converterrr.com/compress-pdf-to-100kb): Strict form uploads
- [Compress PDF to 200 KB](https://www.converterrr.com/compress-pdf-to-200kb): Scanned certificates
- [Compress PDF to 500 KB](https://www.converterrr.com/compress-pdf-to-500kb): Résumés & cover letters
- [Compress PDF to 1 MB](https://www.converterrr.com/compress-pdf-to-1mb): Job portals & applications

## PDF to 300 KB: frequently asked questions

### How do I compress a PDF to 300 KB?

Drop the PDF onto the compressor above. The 300 KB target is already set, so just click Compress and download the result.

### Will the file be exactly 300 KB?

It aims to land at or just under 300 KB. 300 KB here means 300,000 bytes, so it also fits sites that count 1 KB as 1,024 bytes.

### How much quality will I lose at 300 KB?

300 KB fits a few scanned pages at readable quality, or a much longer text-only document. That's about 30 KB per page for a 10-page document (text pages fine, scans get blurry). Text stays selectable at any size; it's the scans and photos that get downsampled.

### My PDF is already smaller than 300 KB. What now?

Then it already fits, and compressing it further would only cost quality. Upload it as it is, or pick a smaller target if you need it smaller still.

### What if my PDF can't get down to 300 KB?

Long scanned PDFs may not reach 300 KB while staying readable. Split the PDF into parts, or pick a larger size.

### What is 300 KB typically needed for?

Common reasons: two- or three-page scans; supporting documents on admissions and application portals; signed contracts and forms. Limits vary by site, so check the exact number where you're uploading.

### Is my PDF private?

Yes. It's processed in an isolated cloud sandbox for your job only and deleted automatically afterwards.