Compress PDF to 300 KB

Reduce your PDF below 300 KB online — free, no signup, 100% in your browser. The target is preset to 300 KB, so just drop your file and download.

📁 Drop a PDF here, or click to choose — target 300 KB

Best for scanned or image-heavy PDFs. The target is preset to 300 KB.

When you need a PDF under 300 KB

A 300 KB PDF limit is typically used for multi-page documents, combined certificates and detailed scans. A 300 KB limit gives more room for a multi-page PDF — a set of certificates, a combined mark sheet, or a scan with coloured seals that must stay visible. It is common on admission and document-verification portals.

Tip for getting under 300 KB

Combine your pages into one PDF first (with our Merge or JPG-to-PDF tools), then compress the whole document to 300 KB in one go — that keeps every page consistent and under the limit.

Need a different limit or a general compressor? Use Compress PDF, and for the rest of your application try our full PDF toolkit — merge, split and convert. Your file never leaves your device.

⚠️ Upload limits vary between portals — always confirm the exact maximum size in the official instructions.

Frequently asked questions

Will coloured stamps stay visible after compressing to 300 KB?
Yes. 300 KB is generous enough to keep coloured seals and signatures clear across a few pages while still meeting the upload limit.
How do I compress a PDF to 300 KB?
Upload your PDF above — the target is preset to 300 KB. The tool rasterises the pages and lowers the quality just enough to bring the file at or under 300 KB, then lets you download it. Everything runs in your browser; nothing is uploaded.
Will the text still be readable after compression?
Yes — the tool keeps the highest quality that fits under 300 KB, so the pages stay legible. Very small targets on a heavy scan will look softer; scanning in greyscale first helps a lot.
Is it free and private?
Completely free with no sign-up or watermark, and the PDF is processed entirely on your device — it is never uploaded to a server.

By Narender Chaudhary, Editorial & Product Lead · Updated June 2026

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