Compress PDF to 300 KB

The target is preset to 300 KB — drop your PDF and the tool searches resolution and quality until the file actually fits, then shows the achieved size before you download.

✅ 100% Free🚫 No Watermark🔒 No File Upload📱 Works on Mobile⚡ Instant Result🙅 No Signup

This page processes your file inside this browser tab. It makes no network requests with your data — check it yourself in 10 seconds.

Choose a PDF to compressDrop files here, or tap to choose. Nothing is uploaded.

How it works

Drop your PDF. The 300 KB target is already set.
The tool finds the highest quality that stays under the limit and rebuilds the file.
Confirm the achieved size in the result panel, then download.

Who uses this tool

Exam portalsRecruitment and admission portals commonly cap document uploads at 300 KB — and reject anything over, to the byte.

Government e-servicesPassport, PAN, GST and state portals enforce per-document caps on scanned proofs.

Banking & KYCStatement and proof uploads with hard size checks on the form itself.

Email & messagingGet a heavy scan under an attachment cap without trial and error.

🔒 Your files never leave your device

There is no upload step to worry about, because there is no server. The file you choose is processed by your own browser, on your own device, and the result downloads straight from its memory. Once this page has loaded, the tool keeps working with the internet disconnected — try it in airplane mode. Unlike sites that promise to “delete your files after one hour”, there is nothing to delete: your file was never sent anywhere. See how to verify this yourself →

💡 Tips for the best result

Scanned certificates and marksheets usually fit 300 KB easily; long reports may need splitting first.
Tick grayscale for extra headroom on colour scans that don't need colour.
The achieved size is displayed before download — no compress-check-retry loop.
Already under the limit? The tool says so and returns your file untouched.

Frequently asked questions

Why does the portal insist on 300 KB?

Application portals cap uploads to keep their storage and review pipelines fast. The cap is enforced to the byte, which is why a compressor that only promises 'smaller' often isn't enough.

What if my file can't reach the target?

Long documents may not fit at readable quality. The tool says so explicitly — usually splitting the document or scanning fewer pages per file solves it.

Is the file uploaded to compress it?

No. Compression runs inside your browser tab; it keeps working with the network disconnected.