How to Compress PDF to 100kb, 200kb, 500kb and 1MB

By admin_thepdfcompress • Apr 7, 2026

If you have ever tried to email a PDF only to hit an attachment limit, you already know the value of a good PDF compressor. In this guide we walk you through how to compress PDF files to specific sizes like 100kb, 200kb, 300kb, 500kb and 1mb.

Why compress a PDF?

Job portals, government forms and university applications often cap upload size at 100kb or 500kb. A raw scan from your phone can easily be 5-10 MB. Compression solves this without retaking photos.

How to compress PDF to 100kb

Open the tool, upload your file, choose the 100kb preset and click Compress. The algorithm lowers image resolution and re-encodes streams to hit your target.

Compress PDF to 500kb or 1mb

For higher-quality needs like portfolios, pick 500kb or 1mb. You keep sharper images while still shrinking the file dramatically.