Compress PDF to 150 KB

Fit a scanned certificate or ID copy within 150 KB.

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Compress PDF to 150 KB help

Choose a PDF and try to fit it within 150 KB. Scanned certificates and ID copies often need to fit a limit this small. Text stays selectable, and a result that misses the limit is clearly marked.

How to use Compress PDF to 150 KB

  1. Choose the PDF you need under 150 KB.
  2. Keep the 150 KB target selected, or pick another quick size.
  3. Click Compress PDF to start working toward 150 KB. You can cancel at any time.
  4. Check whether it reached 150 KB, compare the first page, then download your copy.
Options explained
Choose a target file size
Starts at 150 KB. Pick a different quick size if your form allows more or less. Sizes use 1024 bytes per KB.
Remove saved document details
Optionally remove title and author properties; names printed on pages remain.
Use stronger compression
Works best with scanned PDFs and PDFs with images. Images may look blurry or lose detail. Check small print in the preview. Your target size is not guaranteed.
Limits and supported files

Unlocked PDF documents, including text and images. Signed files require confirmation to create a changed copy.

The requested size is an aim, not a guarantee. Large image files may stay above it even after compression. Stronger compression can make images noticeably softer; review the preview.

Tests covered 1,000 simple text pages and generated image PDFs up to 200 MB. Large files may use the full search time and remain above your target.

Tested in Chromium, Firefox and WebKit. Large-file checks used a 100 KB target.

Questions

Can every PDF fit within 150 KB?

No. A long document or an already small file may not fit within 150 KB. You get the smallest checked result, and the page tells you if it missed the target.

Will compressing to 150 KB turn my text into a picture?

No. Selectable text is kept. Pictures may be resized, saved at lower quality or turned grey. Your original file is not changed.

Will a scanned certificate still be readable at 150 KB?

Usually, for one or two pages. Check names, numbers and seals in the result preview before you submit it, and remove pages the form doesn't need.

How do I check a PDF reduced to 150 KB?

Open the result preview to compare the original and the result side by side. Check small print and important numbers before you use the file.

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