Compress PDF to 100 KB

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

📁 Drop a PDF here, or click to choose — target 100 KB

Best for scanned or image-heavy PDFs. The target is preset to 100 KB.

When you need a PDF under 100 KB

A 100 KB PDF limit is typically used for single-page certificates, the bank-exam handwritten declaration, and tight form limits. A 100 KB cap is one of the strictest PDF limits — common for a single scanned certificate, a mark sheet page, or the handwritten-declaration PDF some bank exams ask for. A colour phone scan is usually several times this size, so it needs real compression.

Tip for getting under 100 KB

Scan or save the document in greyscale rather than full colour where the form allows it — greyscale holds text clearly while dropping to 100 KB far more easily than a colour scan.

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

Can a scanned certificate really fit in 100 KB?

Yes, for a single page. Scan at a moderate resolution, keep it greyscale if colour isn't required, and the tool brings it under 100 KB while keeping the text readable — which is what verifiers check.

How do I compress a PDF to 100 KB?

Upload your PDF above — the target is preset to 100 KB. The tool rasterises the pages and lowers the quality just enough to bring the file at or under 100 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 100 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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