PDF Compressor — tool will load when visible.

PDF Compressor — Exact KB Targets & Quick Compress

Drag & drop on desktop or tap Upload on mobile. Slider (0 → original size) gives full manual control; preset targets and Quick Compress available.

Use the precision slider to set a custom compression level (range: 0 up to the file's original size in KB). Prefer preset targets for predictable results: 20 KB, 50 KB, 100 KB, 300 KB, 500 KB, 1000 KB. After choosing a target, click Compress to Target to produce an exact KB output; otherwise use Quick Compress for an automatic optimization pass. Password-protected PDFs are supported when you provide the password during upload.

Tip: For scanned or image-heavy PDFs try 2–3 nearby targets to balance readability and file size.

Helpful resources: Blog — see index for tool-specific posts (add posts when ready).

Key capabilities

  • Upload UX: Drag & drop (desktop) and single-tap Upload (mobile) with clear filename confirmation and client-side preview.
  • Precision Slider: Full-range slider from 0 to original file size (KB) for fine control.
  • Preset targets: 20 KB, 50 KB, 100 KB, 300 KB, 500 KB, 1000 KB for common portal requirements.
  • Two action modes: Compress to Target (exact KB) and Quick Compress (automatic, content-aware).
  • Password support: Encrypted PDFs accepted when password provided; processing mode (client/server) is clearly explained in the UI.
  • Preview & Accessibility: Preview compressed output and accessible controls (ARIA labels for uploader, slider and action buttons).

How to use

  1. Upload your PDF (drag & drop on desktop; tap Upload on mobile). The filename is shown when uploaded.
  2. Use the slider or pick a preset KB target.
  3. If the PDF is encrypted, enter the password when prompted.
  4. Click Compress to Target for exact KB output or Quick Compress for automatic optimization.
  5. Preview and download the compressed PDF.

FAQ

Can I compress password-protected PDFs?
Yes. Provide the password when prompted so the file can be decrypted and processed. We show how and where the password is used in the UI.
What does Quick Compress do?
Quick Compress performs a content-aware pass that analyzes images and text layers and applies a best-effort optimization to balance readability and file size.