How to reduce PDF size for online forms (100 KB, 200 KB and more)
Try it now: Compress PDF — free, no upload.
Open Compress PDFApplication portals often reject documents with a message like "File size should not exceed 200 KB". Here's how to get your PDF under the limit without making it unreadable.
Step by step
- Open Compress PDF (or go straight to 100 KB or 200 KB where the limit is already set).
- Add your PDF.
- Choose Exact size (KB / MB) and type the limit from the form.
- Click Compress PDF. The tool tries several quality levels and keeps the best one that fits.
- Download it and check the size shown under the button.
Why some PDFs are so big
A PDF made from phone photos stores full-resolution images — often 2–5 MB per page — even though a form only needs a readable copy. Compression re-saves each page as a smaller, optimised image.
Tips for the clearest result
- Fewer pages, better quality. If the form only needs page 1, remove the rest with Remove pages first.
- Black & white for text scans. Ticking this option removes colour data and keeps printed text sharp at small sizes.
- Crop photos before converting. If you're starting from photos, crop them to the document edges, then use JPG to PDF under 100 KB.
- Keep the original. Always keep your full-quality file in case you need it later.
Typical sizes that work
| Document | Usually fits in |
|---|---|
| 1-page certificate or ID proof | 50–100 KB |
| 2–4 page scanned document | 200 KB |
| Resume made in Word / Google Docs | Under 200 KB with the Light level |
| 10+ page scanned report | 500 KB – 1 MB |
FAQ
Will compressing make my text unreadable?
Not if the limit is realistic for the number of pages. One or two pages at 100 KB stay clear; twenty pages at 100 KB will not.
Can I select text after compressing?
The Light level keeps text selectable. The stronger levels turn pages into images, which is what makes them so small.