Compress PDF to KB
Shrink a PDF to a target size like 100KB or 200KB - made for portals that reject big files.
Drop your PDF here or click to upload
PDF files · max 50 MB · deleted after processing
This tool compresses a PDF down toward a specific target file size - like 100KB or 200KB - which is exactly what many online forms, application portals, and government upload systems require. Instead of guessing how much general compression is "enough," you set the size you need and the tool works toward that target.
Frequently asked questions
It aims to get as close as possible to your target size while keeping the document usable. Extremely small targets (like 50KB for a large scanned PDF) may require more aggressive compression than larger targets.
Smaller targets require more image compression, which can visibly reduce quality - especially for scanned documents. If legibility is critical, try the largest target size your form allows rather than the absolute smallest.
The regular PDF Compressor reduces size generally without a specific target. This tool is for when you have an exact size requirement (like "must be under 100KB") from a form or portal.