Quick answer: To compress a PDF to 300 KB, open it here, keep the 300 KB target and download the result. The tool first shrinks the images inside the PDF and keeps the text; only if that is not enough are pages turned into images at a lower resolution. Three to five scanned pages usually stay readable at 300 KB. Nothing is uploaded.
300 KB is a common limit for supporting documents: mark sheets, experience letters, proof of address. It holds several readable scanned pages when the PDF is compressed step by step.
Compress PDF to 300 KB at a glance
| Price | Free, no sign-up, no watermark, no daily limit |
|---|---|
| Accepts | |
| Largest file | 50 MB per file |
| Where it runs | In your browser: files are never uploaded |
| Works on | Any modern browser on iPhone, Android, Windows, Mac and Linux |
| Send the result | Download it, or send it free with a link or by email (up to 20 GB) |
How to compress PDF to 300 KB
- Choose the PDF that is too big for the form.
- Keep 300 KB, or pick 200, 400 or 500 KB to match the limit.
- Press Compress to target and wait while it tries the gentlest method first.
- Check the pages on screen, then download and upload the PDF.
Pages that fit in 300 KB
| At 300 KB | |
|---|---|
| Typed document of any common length | Usually fits, text kept |
| 1 to 2 scanned pages | Sharp |
| 3 to 5 scanned pages | Readable |
| 10 or more scanned pages | Small print gets soft; use 500 KB or split the file |
Keeps text when it can
PDFs made in Word or Google Docs are mostly text and fonts, which take little space; their size usually comes from embedded photos or logos. Shrinking those images often gets the file under 300 KB with every word still selectable and searchable. Only scans, which are photos of pages, need to be turned into lower-resolution images, and the tool tells you which step it needed.
If it still does not fit
- Upload fewer pages: split the PDF if the form accepts several files.
- Make scans grey with Grayscale PDF.
- For a single image, compress image to 300 KB instead.
The PDF is compressed in your browser and never uploaded to us.
How this compares
| This tool | Online converters (e.g. iLovePDF, Smallpdf or Adobe Acrobat online) | Desktop apps (e.g. Adobe Acrobat Pro) | |
|---|---|---|---|
| Your file is uploaded | No | Yes, to their servers | No |
| Install or account | None | Account for some features | Install needed |
| Watermark or daily limits | None | Common on free plans | Depends on the app |
Plans of other services change; check their sites. More pdf tools.
Frequently asked questions
How do I compress a PDF to 300 KB?
Open it here, keep the 300 KB target and press Compress to target. Download the result when it is done.
Will my text stay selectable?
Yes, if shrinking the images inside is enough, which is usual for typed documents. Scans are converted to images and work like scans.
How many pages can a 300 KB PDF have?
Typed documents can be long. For scans, three to five pages stay readable; more need a larger limit or separate files.
Is my PDF uploaded?
No. It is compressed on your device.
Need to send a big file?
Send files up to 20 GB with a download link or by email. Free, no account needed, original quality.
Send large files free