How to compress a PDF to 150 KB
- Add your PDF. The target box already shows 150 KB.
- Click Compress PDF. The tool searches for the sharpest version that stays below 150 KB.
- Download the file and check the size in the summary.
Where a 150 KB limit is common
Visa appointment systems, entrance exam registrations and some bank KYC forms ask for documents of 100–150 KB. Typical files are a passport bio page, an ID card (front and back), a photo ID or a one- or two-page certificate.
Is 150 KB enough for my document?
A readable scanned page needs about 40–70 KB, so 150 KB fits two or three pages, or one page in very good quality.
Example: ID card front and back
Two phone photos of an ID card, combined into one PDF, weigh 5.3 MB. With the 150 KB target the result is around 135 KB, and the ID number and date of birth remain sharp.
Tips for the best quality at 150 KB
- Put front and back on one page when the form expects a single page: make a PDF from both photos with JPG to PDF.
- Avoid flash glare. Shiny cards photographed with flash create white spots that hide details.
- Use daylight and a dark, plain background so the card edges are clear.
Frequently asked questions
Can I choose 100 KB instead?
Yes. Type 100 in the target box, or open the 100 KB page.
Does the tool keep my file?
No. The file is processed in your browser and disappears when you close the page.
Does it work on a phone?
Yes, in Safari and Chrome on iPhone and Android. Pick the file from Files or Downloads.
Is it free?
Yes, completely free with no account.
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Last reviewed: 2026-11-10. Tools are provided as-is. Keep a copy of important originals. See our disclaimer.